全國(guó)熱線：17621202883 24H在線
40Cr合金圓鋼-工具鋼
專(zhuān)業(yè)為您提供工具鋼牌號(hào)，材質(zhì)單，在線報(bào)價(jià)單 歡迎選購(gòu)
40Cr_百度百科 .rc-dialog{margin:10px;position:relative;width:auto}.rc-dialog-wrap{-webkit-overflow-scrolling:touch;bottom:0;left:0;outline:0;overflow:auto;position:fixed;right:0;top:0;z-index:1050}.rc-dialog-title{font-size:14px;font-weight:700;line-height:21px;margin:0}.rc-dialog-content{background-clip:padding-box;background-color:#fff;border:none;border-radius:6px 6px;position:relative}.rc-dialog-close{background:transparent;border:0;color:#000;cursor:pointer;filter:alpha(opacity=20);font-size:21px;font-weight:700;line-height:1;opacity:.2;position:absolute;right:20px;-webkit-text-decoration:none;text-decoration:none;text-shadow:0 1px 0 #fff;top:12px}.rc-dialog-close-x:after{content:"×"}.rc-dialog-close:hover{filter:alpha(opacity=100);opacity:1;-webkit-text-decoration:none;text-decoration:none}.rc-dialog-header{background:#fff;border-bottom:1px solid #e9e9e9;border-radius:5px 5px 0 0;color:#666;padding:13px 20px 14px}.rc-dialog-body{padding:20px}.rc-dialog-footer{border-radius:0 0 5px 5px;border-top:1px solid #e9e9e9;padding:10px 20px;text-align:right}.rc-dialog-zoom-appear,.rc-dialog-zoom-enter{animation-duration:.3s;animation-fill-mode:both;animation-play-state:paused;animation-timing-function:cubic-bezier(.08,.82,.17,1);opacity:0}.rc-dialog-zoom-leave{animation-duration:.3s;animation-fill-mode:both;animation-play-state:paused;animation-timing-function:cubic-bezier(.6,.04,.98,.34)}.rc-dialog-zoom-appear.rc-dialog-zoom-appear-active,.rc-dialog-zoom-enter.rc-dialog-zoom-enter-active{animation-name:rcDialogZoomIn;animation-play-state:running}.rc-dialog-zoom-leave.rc-dialog-zoom-leave-active{animation-name:rcDialogZoomOut;animation-play-state:running}@keyframes rcDialogZoomIn{0%{opacity:0;transform:scale(0)}to{opacity:1;transform:scale(1)}}@keyframes rcDialogZoomOut{0%{transform:scale(1)}to{opacity:0;transform:scale(0)}}@media (min-width:768px){.rc-dialog{margin:30px auto;width:600px}}.rc-dialog-mask{background-color:#373737;background-color:rgba(55,55,55,.6);bottom:0;filter:alpha(opacity=50);height:100%;left:0;position:fixed;right:0;top:0;z-index:1050}.rc-dialog-mask-hidden{display:none}.rc-dialog-fade-appear,.rc-dialog-fade-enter{opacity:0}.rc-dialog-fade-appear,.rc-dialog-fade-enter,.rc-dialog-fade-leave{animation-duration:.3s;animation-fill-mode:both;animation-play-state:paused;animation-timing-function:cubic-bezier(.55,0,.55,.2)}.rc-dialog-fade-appear.rc-dialog-fade-appear-active,.rc-dialog-fade-enter.rc-dialog-fade-enter-active{animation-name:rcDialogFadeIn;animation-play-state:running}.rc-dialog-fade-leave.rc-dialog-fade-leave-active{animation-name:rcDialogFadeOut;animation-play-state:running}@keyframes rcDialogFadeIn{0%{opacity:0}to{opacity:1}}@keyframes rcDialogFadeOut{0%{opacity:1}to{opacity:0}}.bk-dialog{left:50%;margin:0!important;position:absolute!important;top:50%;transform:translate(-50%,-50%)}.bk-dialog .rc-dialog-content{background:#fff;border:1px solid #bbb;border-radius:0}.bk-dialog .rc-dialog-header{background:#fafbfc;border-bottom:1px solid #e5e5e5;padding:10px 20px 9px}.bk-dialog .rc-dialog-title{color:#666;font-size:16px;font-weight:400}.bk-dialog .rc-dialog-close{color:#cbcbcb;font-size:18px;opacity:1}.bk-dialog .rc-dialog-body{padding:26px 50px 35px;text-align:center}.bk-dialog .dialog-title{color:#333;font-size:20px;font-weight:700;line-height:26px;margin-bottom:20px}.bk-dialog .dialog-content{color:#ccc;font-size:16px;line-height:26px}.bk-dialog .dialog-content .alert-content{align-items:center;display:flex;justify-content:center;padding-top:44px;width:378px}.bk-dialog .dialog-content .alert-content.no-icon .msg{max-width:378px}.bk-dialog .dialog-content .alert-content.no-sub-msg .msg h1{line-height:58px}.bk-dialog .dialog-content .alert-content .msg{flex:none;max-width:302px;text-align:center}.bk-dialog .dialog-content .alert-content .msg h1{color:#333;font-size:20px;line-height:32px;text-align:left}.bk-dialog .dialog-content .alert-content .msg pre{color:#888;font-family:arial,tahoma,Microsoft Yahei,"\5b8b\4f53",sans-serif,font-extend;font-size:14px;line-height:22px;text-align:left}.bk-dialog .dialog-content .alert-content .msg .ext-info{color:#888;font-size:12px;margin-top:14px;text-align:left}.bk-dialog .dialog-content .alert-content .msg .ext-info i{color:#52a3f5}.bk-dialog .dialog-content .alert-content .alert-icon{align-items:center;border:2px solid #b4d6f9;border-radius:56px;color:#52a3f5;display:flex;flex:none;height:56px;justify-content:center;margin-right:12px;width:56px}.bk-dialog .dialog-content .alert-content .alert-icon.error-icon{border-color:#fbddd6;color:#f18167}.bk-dialog .dialog-content .alert-content .alert-icon .icon{font-size:30px;line-height:0}.bk-dialog .btn-list{margin-top:35px}.bk-dialog .btn-list .btn-item{background:#52a3f5;border:1px solid #52a3f5;border-radius:3px;box-shadow:0 1px 0 rgba(0,0,0,.05);color:#fff;cursor:pointer;display:inline-block;font-size:16px;line-height:1;margin-right:10px;padding:8px 24px;text-align:center}.bk-dialog .btn-list .btn-item:last-child{margin-right:0}.popup-content{background:#fff;border:1px solid #d7d7d7;margin:auto;padding:5px;width:50%}[role=tooltip].popup-content{border-radius:5px;box-shadow:0 0 3px rgba(0,0,0,.16);width:200px}.popup-overlay{background:rgba(0,0,0,.5)}[data-popup=tooltip].popup-overlay{background:transparent}.popup-arrow{stroke-width:2px;stroke:#d7d7d7;stroke-dasharray:30px;stroke-dashoffset:-54px;bottom:0;color:#fff;filter:drop-shadow(0 -3px 3px rgba(0,0,0,.16));left:0;right:0;top:0}.bubble-box{background:#fff;border:1px solid #dfdfdf;border-radius:3px;box-shadow:0 4px 6px -4px rgba(0,0,0,.2);z-index:2000}.bubble-box,.bubble-box .bubble-arrow-place{position:absolute}.bubble-box .bubble-arrow{background:#fff;border:1px solid #dfdfdf;box-shadow:0 4px 6px -4px rgba(0,0,0,.2);height:10px;overflow:hidden;position:absolute;transform:rotate(45deg);width:10px;z-index:1}.bubble-box.top-left{bottom:100%;left:0;margin-bottom:6px}.bubble-box.top-left .bubble-arrow-place{bottom:-8px;height:8px;left:0;width:100%}.bubble-box.top-left .bubble-arrow{left:3px;margin-top:-6px;top:100%}.bubble-box.top-right{bottom:100%;margin-bottom:6px;right:0}.bubble-box.top-right .bubble-arrow-place{bottom:-8px;height:8px;left:0;width:100%}.bubble-box.top-right .bubble-arrow{margin-top:-6px;right:3px;top:100%}.bubble-box.top-center{bottom:100%;left:50%;margin-bottom:6px;transform:translateX(-50%)}.bubble-box.top-center .bubble-arrow-place{bottom:-8px;height:8px;left:0;width:100%}.bubble-box.top-center .bubble-arrow{left:50%;margin-left:-6px;margin-top:-6px;top:100%}.bubble-box.bottom-left{left:0;margin-top:6px;top:100%}.bubble-box.bottom-left .bubble-arrow-place{height:8px;left:0;top:-8px;width:100%}.bubble-box.bottom-left .bubble-arrow{bottom:100%;left:3px;margin-bottom:-6px}.bubble-box.bottom-right{margin-top:6px;right:0;top:100%}.bubble-box.bottom-right .bubble-arrow-place{height:8px;left:0;top:-8px;width:100%}.bubble-box.bottom-right .bubble-arrow{bottom:100%;margin-bottom:-6px;right:3px}.bubble-box.bottom-center{left:50%;margin-top:6px;top:100%;transform:translateX(-50%)}.bubble-box.bottom-center .bubble-arrow-place{height:8px;left:0;top:-8px;width:100%}.bubble-box.bottom-center .bubble-arrow{bottom:100%;left:50%;margin-bottom:-6px;margin-left:-6px}.bubble-box.left-top{margin-right:8px;right:100%;top:0}.bubble-box.left-top .bubble-arrow-place{height:100%;right:-8px;top:0;width:8px}.bubble-box.left-top .bubble-arrow{left:100%;margin-left:-6px;top:3px}.bubble-box.left-bottom{bottom:0;margin-right:8px;right:100%}.bubble-box.left-bottom .bubble-arrow-place{height:100%;right:-8px;top:0;width:8px}.bubble-box.left-bottom .bubble-arrow{bottom:3px;left:100%;margin-left:-6px}.bubble-box.left-center{margin-right:8px;right:100%;top:50%;transform:translateY(-50%)}.bubble-box.left-center .bubble-arrow-place{height:100%;right:-8px;top:0;width:8px}.bubble-box.left-center .bubble-arrow{left:100%;margin-left:-6px;margin-top:-6px;top:50%}.bubble-box.right-top{left:100%;margin-left:8px;top:0}.bubble-box.right-top .bubble-arrow-place{height:100%;left:-8px;top:0;width:8px}.bubble-box.right-top .bubble-arrow{margin-right:-6px;right:100%;top:3px}.bubble-box.right-bottom{bottom:0;left:100%;margin-left:8px}.bubble-box.right-bottom .bubble-arrow-place{height:100%;left:-8px;top:0;width:8px}.bubble-box.right-bottom .bubble-arrow{bottom:3px;margin-right:-6px;right:100%}.bubble-box.right-center{left:100%;margin-left:8px;top:50%;transform:translateY(-50%)}.bubble-box.right-center .bubble-arrow-place{height:100%;left:-8px;top:0;width:8px}.bubble-box.right-center .bubble-arrow{margin-right:-6px;margin-top:-6px;right:100%;top:50%}.bubble-box .bubble-content{background:#fff;border-radius:3px;overflow:hidden;position:relative;z-index:2}.user-bar{color:#333;display:flex;font-size:13px}.user-bar.dark-theme,.user-bar.dark-theme .user-bar-item .menu-item a,.user-bar.dark-theme .user-bar-item>a{color:#fff}.user-bar .user-bar-item{flex:none;padding:0 11px;position:relative}.user-bar .user-bar-item>a{color:#333;cursor:pointer;-webkit-text-decoration:none;text-decoration:none}.user-bar .user-bar-item>a:hover{-webkit-text-decoration:underline;text-decoration:underline}.user-bar .user-bar-item>a svg{fill:#c1c1c1;font-size:14px;margin:0 5px 0 3px;vertical-align:-2px}.user-bar .user-bar-item.message{margin-left:11px;margin-right:11px}.user-bar .user-bar-item .menu-item{font-size:12px;white-space:nowrap}.user-bar .user-bar-item .menu-item a{color:#333;cursor:pointer;display:block;height:24px;line-height:24px;padding:0 11px}.user-bar .user-bar-item .menu-item a:hover{background:#38f;color:#fff}.user-bar .user-bar-item .menu-item a:hover .msg-num{color:#fff}.user-bar .user-bar-item .menu-item .msg-num{color:#338de6;font-weight:700;margin-left:3px}.user-bar .user-bar-item .lemma-msg-bubble{background:#ffffda;border-radius:3px;font-size:12px;padding:10px 5px;position:relative;width:260px}.user-bar .user-bar-item .lemma-msg-bubble .lemma-msg-item a{color:#2b66b4;height:24px;line-height:24px;outline:0;padding:0 10px;-webkit-text-decoration:none;text-decoration:none}.user-bar .user-bar-item .lemma-msg-bubble .cancel-alarm{margin-top:10px}.user-bar .user-bar-item .lemma-msg-bubble .close-icon{color:#b0b0b0;cursor:pointer;font-size:12px;position:absolute;right:6px;top:6px}.user-bar.user-login .user-bar-item:last-child{margin-right:9px}.user-bar .triangle-down{border:4px solid transparent;border-top-color:#8b8c8c;position:absolute;right:0;top:7px}.clearfix{*zoom:1}.clearfix:after,.clearfix:before{content:" ";display:table}.clearfix:after{clear:both}.ellipsis{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.z-index-content{z-index:1}.z-index-fixed-content{z-index:100}.z-index-modal-mask{z-index:1000}.z-index-modal-content{z-index:1100}.z-index-popup{z-index:2000}.z-index-toast{z-index:3000}.gray{filter:grayscale(100%);-moz-filter:grayscale(100%);-ms-filter:grayscale(100%);-o-filter:grayscale(100%);filter:progid:DXImageTransform.Microsoft.BasicImage(grayscale=1);-webkit-filter:grayscale(1)}.lemmaSearchBarWrapper{margin:0 auto;position:relative;width:1139px}.lemmaSearchBar{box-sizing:border-box;height:104px;margin:auto;padding-top:25px;width:808px}@media screen and (min-width:1441px){.lemmaSearchBar{width:903px}}.fixedWrapper{background-color:#fff;border-bottom:1px solid #ebebeb;box-shadow:0 0 5px #888;height:66px;left:0;margin:auto;min-width:1140px;opacity:0;position:fixed;top:0;transition:opacity .3s;width:100%;z-index:100}.fixedWrapper,.fixedWrapper *{box-sizing:border-box}.fixedWrapper .fixedBg{height:66px;margin:auto;padding-top:12px;width:1140px}.fixedWrapper.fadeIn{opacity:1}.fixedWrapper.fadeOut{opacity:0}.fixedWrapper.show{z-index:100}.fixedWrapper.hide{z-index:-10}.searchBar{height:47px;margin:auto}.searchBar,.searchBar *{box-sizing:border-box}.searchBar .logoWrapper{display:inline-block;float:left;height:100%;width:154px}.searchBar .logoWrapper .logo{cursor:pointer;height:44px}.searchBar .rightWrapper{display:inline-block;float:left;height:100%;padding-top:7px;position:relative}.searchBar .rightWrapper .inputWrapper{display:inline-block;float:left;height:40px;position:relative}.searchBar .rightWrapper .inputWrapper .placeholder{color:#999;font-size:14px;font-weight:400;left:0;opacity:0;overflow:hidden;padding-left:10px;pointer-events:none;position:absolute;text-overflow:ellipsis;top:50%;transform:translateY(-50%);transition:.5s ease-out;transition-property:opacity;white-space:nowrap;width:calc(100% - 10px);z-index:1000}.searchBar .rightWrapper .inputWrapper .placeholder.showIn{opacity:1;transition:.5s ease-in}.searchBar .rightWrapper .inputWrapper .searchInput{border:1px solid #ccc;border-right:0;display:inline-block;font-size:16px;height:40px;line-height:28px;padding:6px 36px 4px 8px;-webkit-user-select:text;width:440px}.searchBar .rightWrapper .inputWrapper .searchInput::-webkit-input-placeholder{animation:zoomIn 1s ease-in-out;color:#999;font-size:14px;font-weight:400;opacity:var(--placeholder-color);overflow:hidden;text-overflow:ellipsis;-webkit-transition-property:opacity;transition-property:opacity;-webkit-transition:2s ease-out;transition:2s ease-out;white-space:nowrap}.searchBar .rightWrapper .inputWrapper .searchInput:hover{border-color:#999}.searchBar .rightWrapper .inputWrapper .searchInput:focus{border-color:#4791ff}@media screen and (min-width:1441px){.searchBar .rightWrapper .inputWrapper .searchInput{width:535px}}.searchBar .rightWrapper .inputWrapper .closeIcon{color:#9195a3;cursor:pointer;display:grid;font-size:16px;position:absolute;right:10px;top:50%;transform:translateY(-50%)}.searchBar .rightWrapper .resultWrapper{background:#fff;box-shadow:none;box-sizing:content-box;left:0;position:absolute;top:39px;width:100%;z-index:100}.searchBar .rightWrapper .lemmaBtn{-webkit-appearance:none;background:#38f;border:1px solid;border-color:#38f #38f #2d78f4;border-radius:0;color:#fff;cursor:pointer;display:inline-block;float:left;font-family:arial;font-size:16px;height:40px;letter-spacing:1px;outline:medium;width:104px}.searchBar .rightWrapper .lemmaBtn:hover{background:#317ef3;border-color:#317ef3}.searchBar .rightWrapper .siteBtn{-webkit-appearance:none;background-color:#fff;border:1px solid #2e82ff;border-radius:0;color:#38f;cursor:pointer;display:inline-block;float:left;font-family:arial;font-size:16px;height:40px;letter-spacing:1px;margin-left:4px;outline:medium;width:104px}.searchBar .rightWrapper .helpBtn{color:#333;display:inline-block;float:right;font-size:13px;margin-left:14px;margin-top:17px;position:absolute;-webkit-text-decoration:underline;text-decoration:underline;width:26px}.searchBar.top-search{height:38px}.searchBar.top-search .logoWrapper{margin-right:10px;width:100px}.searchBar.top-search .logoWrapper .logo{height:33px}.searchBar.top-search .rightWrapper{padding-top:4px}.searchBar.top-search .rightWrapper .inputWrapper{height:34px}.searchBar.top-search .rightWrapper .inputWrapper .searchInput{font-size:16px;height:34px;line-height:22px;padding:6px 36px 4px 8px;width:400px}.searchBar.top-search .rightWrapper .inputWrapper .resultWrapper{background:#fff;box-shadow:none;position:absolute;top:33px;width:100%;z-index:100}.searchBar.top-search .rightWrapper .lemmaBtn{font-size:14px;height:34px;width:100px}.searchBar.top-search .rightWrapper .helpBtn,.searchBar.top-search .rightWrapper .siteBtn{display:none}.searchBar .splitLine{background-color:#f5f5f5;height:1px;margin:13px 16px 16px;padding:0 8px}.searchBar .hotBox{border:1px solid #ccc;border-top:none;cursor:default;font-size:14px;font-weight:400;line-height:22px;padding:0 15px 16px}.searchBar .hotBox .hotList{display:flex}.searchBar .hotBox .hotList>div{width:calc(50% - 10px)}.searchBar .hotBox .hotList .hotLeftList{margin:7px 10px 0 0}.searchBar .hotBox .hotList .hotRightList{margin-top:7px}.searchBar .hotBox .hotList .hotItem{border:1px solid transparent;border-radius:6px;cursor:pointer;display:flex;margin-top:5px;overflow:hidden;padding:4px 7px}.searchBar .hotBox .hotList .hotItem:hover{border-color:#e0e0e0}.searchBar .hotBox .hotList .hotItem:hover .hotDesc,.searchBar .hotBox .hotList .hotItem:hover .hotTitle{color:#38e!important}.searchBar .hotBox .hotList .hotItem .hotIdx,.searchBar .hotBox .hotList .hotItem img{background:#f5f5f6;border-radius:4px;color:#5b5d66;flex:none;font-size:11px;font-weight:600;line-height:16px;margin-right:4px;position:relative;text-align:center;top:1px}.searchBar .hotBox .hotList .hotItem .hotIdx{height:16px;width:16px}.searchBar .hotBox .hotList .hotItem .hotContent{line-height:1;overflow:hidden}.searchBar .hotBox .hotList .hotItem .hotContent .hotTitle{color:#222;font-size:14px;font-weight:500;line-height:20px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;word-break:keep-all}.searchBar .hotBox .hotList .hotItem .hotContent .hotDesc{color:#666;font-size:12px;line-height:1.5;margin-top:1.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;word-break:keep-all}.searchBar .historyBox{border:1px solid #ccc;cursor:default;font-size:14px;font-weight:400;line-height:22px;padding:16px 15px 24px}.searchBar .historyBox .historyTitle img{display:inline-block}.searchBar .historyBox .historyTitle .delAllBtn{color:#9195a3;cursor:pointer;float:right;font-size:12px;font-weight:400;line-height:1}.searchBar .historyBox .historyList{cursor:default;font-size:14px;font-weight:400;line-height:0;margin-top:2px}.searchBar .historyBox .historyList .historyItem{background:#f5f5f6;border:1px solid #f5f5f6;border-radius:6px;box-sizing:border-box;cursor:pointer;display:inline-block;line-height:20px;margin-right:10px;margin-top:10px;max-width:calc(50% - 10px);padding:4px 7px;position:relative}.searchBar .historyBox .historyList .historyItem.active{background:0 0;border-color:#e0e0e0;color:#38f}.searchBar .historyBox .historyList .historyItem .historyContent{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;word-break:keep-all}.searchBar .historyBox .historyList .historyItem .delItemBtn{background:#ccc;border-radius:50%;box-sizing:content-box;font-size:12px;font-weight:bolder;height:12px;line-height:14px;padding:1px 0;position:absolute;right:-6px;text-align:center;top:-6px;width:14px}.searchBar .historyBox .historyList .historyItem .delItemBtn svg{color:#fff;transform:scale(.66667)}.searchBar .sugWrapper{border:1px solid #ccc}.searchBar .resultBox{height:auto;margin:8px 0;padding:0}.searchBar .resultBox .resultItem{align-items:center;color:#222;cursor:pointer;display:flex;overflow:hidden;padding:8px 16px}.searchBar .resultBox .resultItem.active{background:#f9f9f9;color:#38f}.searchBar .resultBox .resultItem .resultPic{flex:none;margin-right:8px}.searchBar .resultBox .resultItem .resultPic img{border:1px solid #f5f5f5;border-radius:6px}.searchBar .resultBox .resultItem .resultContent{font-size:14px;line-height:20px;overflow:hidden}.searchBar .resultBox .resultItem .resultContent .resultDesc,.searchBar .resultBox .resultItem .resultContent .resultTitle{margin-bottom:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.searchBar .resultBox .resultItem .resultContent .resultDesc{line-height:1.5}.searchBar .resultBox .resultFooter{color:#999;cursor:pointer;font-size:12px;line-height:1.5;margin:5px 16px}.searchBar .resultBox .resultFooter span{color:#38f}.searchBar .resultBox .resultFooter svg{vertical-align:-1px}.searchBar .sugListWrapper{color:#222;line-height:30px;padding:0 0 16px}.searchBar .sugListWrapper .sugList{list-style:none}.searchBar .sugListWrapper .sugList svg{color:#9195a3;font-size:18px;margin-right:2px;vertical-align:6px}.searchBar .sugListWrapper .sugList li:first-child{color:#222;cursor:default;font-size:14px;font-weight:500;line-height:1;margin:16px 16px 6px}.searchBar .sugListWrapper .sugList li:first-child svg{vertical-align:-4px}.searchBar .sugListWrapper .sugList li:not(:first-child){color:#222;cursor:pointer;font-size:14px;height:30px;line-height:30px;list-style:none;padding:0 16px}.searchBar .sugListWrapper .sugList li .sugListItem{word-wrap:normal;display:inline-block;max-width:80%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.searchBar .sugListWrapper .sugList li.active{background:#f9f9f9;color:#38f}.searchBar .sugListWrapper .sugFooter{background-color:#fafafa;color:#666;font-size:12px;font-weight:400;height:26px;line-height:26px;padding:0 10px;text-align:right}.searchBar .sugListWrapper .sugFooter .sugFooterClose{cursor:pointer;display:inline;-webkit-text-decoration:underline;text-decoration:underline}.index-module_topbar__aBAV7{border-bottom:1px solid #ebebeb;display:flex;height:32px;justify-content:flex-end;position:relative;z-index:6}.index-module_topbar__aBAV7 .index-module_websiteList__WqwA2{border-bottom:1px solid #f1f1f1}.index-module_topbar__aBAV7 .index-module_separator__gx7UX{border-right:1px solid #ebebeb;height:12px;margin:10px 13px 10px 25px}.index-module_topbar__aBAV7 .index-module_userBarBox__nGfXC{margin-top:6px}.container{font-size:0;height:32px;line-height:32px}.container .tabItem{color:#333;display:inline-block;font-size:13px;font-weight:700;outline:0;text-align:center;-webkit-text-decoration:underline;text-decoration:underline;width:54px}.container .baike{color:#666;-webkit-text-decoration:none;text-decoration:none}.index-module_navBarWrapper__X0DND{background:#459df5;height:45px;overflow:hidden;position:relative;z-index:5}.index-module_navBarWrapper__X0DND a{-webkit-text-decoration:none;text-decoration:none}.index-module_navBarWrapper__X0DND.index-module_hover__Gsl-V{overflow:visible}.index-module_navBarWrapper__X0DND.index-module_hover__Gsl-V .index-module_navBarBg__jLfYB{background:rgba(36,97,158,.95)}.index-module_navBarWrapper__X0DND.index-module_hover__Gsl-V dd{opacity:1}.index-module_navBarWrapper__X0DND .index-module_navBar__fLItn{background:#459df5;height:45px;min-width:900px;position:relative;z-index:2}.index-module_navBarWrapper__X0DND .index-module_navBarBg__jLfYB{height:276px;left:0;position:absolute;top:0;transition:.3s;width:100%;z-index:1}.index-module_navBarWrapper__X0DND .index-module_navBarList__iL2jR{background:#459df5;border-bottom:1px solid #3b92e9;border-top:1px solid #5895d5;display:flex;height:43px;margin:0 auto;position:relative;width:1140px}.index-module_navBarWrapper__X0DND dl{position:relative}.index-module_navBarWrapper__X0DND dl.index-module_cooperation__ZISm7,.index-module_navBarWrapper__X0DND dl.index-module_guidance__XWoyq,.index-module_navBarWrapper__X0DND dl.index-module_second-know__o9jR2,.index-module_navBarWrapper__X0DND dl.index-module_special__j8K7K,.index-module_navBarWrapper__X0DND dl.index-module_team__Heqwh{width:126px}.index-module_navBarWrapper__X0DND dl.index-module_cooperation__ZISm7 dt,.index-module_navBarWrapper__X0DND dl.index-module_guidance__XWoyq dt,.index-module_navBarWrapper__X0DND dl.index-module_second-know__o9jR2 dt,.index-module_navBarWrapper__X0DND dl.index-module_special__j8K7K dt,.index-module_navBarWrapper__X0DND dl.index-module_team__Heqwh dt{width:124px}.index-module_navBarWrapper__X0DND dl.index-module_cooperation__ZISm7 dd,.index-module_navBarWrapper__X0DND dl.index-module_guidance__XWoyq dd,.index-module_navBarWrapper__X0DND dl.index-module_second-know__o9jR2 dd,.index-module_navBarWrapper__X0DND dl.index-module_special__j8K7K dd,.index-module_navBarWrapper__X0DND dl.index-module_team__Heqwh dd{width:125px}.index-module_navBarWrapper__X0DND dl.index-module_index__Kc2gf,.index-module_navBarWrapper__X0DND dl.index-module_user__Kc93c{width:94px}.index-module_navBarWrapper__X0DND dl.index-module_index__Kc2gf dt,.index-module_navBarWrapper__X0DND dl.index-module_user__Kc93c dt{width:92px}.index-module_navBarWrapper__X0DND dl.index-module_index__Kc2gf dd,.index-module_navBarWrapper__X0DND dl.index-module_user__Kc93c dd{width:93px}.index-module_navBarWrapper__X0DND dl.index-module_knowledge__9fisv dd,.index-module_navBarWrapper__X0DND dl.index-module_knowledge__9fisv dt{width:140px}.index-module_navBarWrapper__X0DND dl:hover dt{background:#338ce6}.index-module_navBarWrapper__X0DND dl:hover dd{background:#19508b;border-color:#184f8b}.index-module_navBarWrapper__X0DND dl:hover+dl dd{border-color:transparent!important;border-color:#184f8b}.index-module_navBarWrapper__X0DND dt{border-left:1px solid transparent!important;border-right:1px solid transparent!important;border:1px solid #59a1e9;border-bottom:0;border-top:0;color:#f5f5f5;cursor:pointer;font-size:16px;height:44px;line-height:44px;text-align:center;transition:background .3s}.index-module_navBarWrapper__X0DND dt a{color:#f5f5f5}.index-module_navBarWrapper__X0DND dt a.index-module_selected__6G8lk{border-bottom:2px solid #fff}.index-module_navBarWrapper__X0DND dd{border-left:1px solid #3a6fa2;height:210px;opacity:0;padding:11px 0 10px;transition:.3s}.index-module_navBarWrapper__X0DND dd .index-module_navBarItem__m7wZ4{font-size:14px;height:30px;line-height:30px;text-align:center}.index-module_navBarWrapper__X0DND dd .index-module_navBarItem__m7wZ4 a{color:#a2c9f0;padding-bottom:3px}.index-module_navBarWrapper__X0DND dd .index-module_navBarItem__m7wZ4 a:hover{border-bottom:2px solid #fff;color:#fff}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ{align-items:center;display:flex;font-size:16px;height:24px;line-height:24px;margin:10px 0;position:absolute;right:0}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2{font-size:16px;height:16px;line-height:1;padding:0 15px}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj a,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2 a{color:#fff}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj path,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj svg,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2 path,.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2 svg{fill:#fff}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_appDownload__Bx1Uj svg{animation:index-module_phone__w9Py1 2s;-webkit-animation:index-module_phone__w9Py1 2s infinite;font-size:18px;margin-right:3px;transform:rotate(0);transform-origin:center;vertical-align:-3px}.index-module_navBarWrapper__X0DND .index-module_rightList__RchPZ .index-module_usercenter__brbF2 svg{font-size:14px;margin-right:6px;vertical-align:-1px}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ{background:#9e1814}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ.index-module_hover__Gsl-V .index-module_navBarBg__jLfYB{background:rgba(124,25,22,.95)}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ .index-module_navBar__fLItn{background:#9e1814}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ .index-module_navBarList__iL2jR{background:#9e1814;border-bottom:1px solid #9e1814;border-top:1px solid #9e1814}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dl:hover dt{background:#8a1f1b}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dl:hover dd{background:#6d100c;border-color:#6d100c}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dl:hover+dl dd{border-color:#8a1f1b}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dt{border:none;color:#f5f5f5}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dt a{color:#f5f5f5}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dt a.index-module_selected__6G8lk{border-bottom:2px solid #fff}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dd{border-left:1px solid #8a1f1b}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dd .index-module_navBarItem__m7wZ4 a{color:#c29391}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ dd .index-module_navBarItem__m7wZ4 a:hover{border-bottom:2px solid #fff;color:#fff}.index-module_navBarWrapper__X0DND.index-module_red__45nyJ .index-module_rightList__RchPZ .index-module_usercenter__brbF2{border-left:1px solid #8a1f1b}@keyframes index-module_phone__w9Py1{0%{transform:rotate(0)}10%{transform:rotate(-15deg)}20%{transform:rotate(15deg)}30%{transform:rotate(-15deg)}40%{transform:rotate(15deg)}50%{transform:rotate(0)}to{transform:rotate(0)}}.index-module_pageHeader__jSG5w{background:#fff}.copyright{color:#333;font-size:12px;text-align:center}.copyright a{color:#338de6;-webkit-text-decoration:none;text-decoration:none}.copyright .copyright-img{border:0;display:inline-block;vertical-align:text-bottom}.copyright .recordcode{height:16px;line-height:16px;padding-top:6px;text-align:center}.copyright .recordcode .icon-police{background:url(https://bkssl.bdimg.com/static/wiki-common/widget/component/footer/img/icon-police_5f07082.png) 0 0 no-repeat;display:inline-block;height:16px;margin-right:6px;margin-top:-4px;vertical-align:middle;width:14px}.page-footer-content{display:flex;font-size:12px;justify-content:center;width:100%}.page-footer-content:after,.page-footer-content:before{content:" ";display:table}.page-footer-content:after{clear:both}.page-footer-content .block-item{box-sizing:content-box;float:left;width:210px}.page-footer-content .block-item.fresh-block{padding:0 35px 0 5px}.page-footer-content .block-item.question-block{padding:0 35px}.page-footer-content .block-item.suggestion-block{padding:0 5px 20px 35px}.page-footer-content .block-item .block-title{color:#333;font-size:20px;line-height:1.5}.page-footer-content .block-item .block-title svg{color:#aaa;margin-right:10px}.page-footer-content .block-item .block-content{padding:5px 0 0 30px;width:210px}.page-footer-content .block-item .block-content>a{color:#666;cursor:pointer;float:left;margin-bottom:5px;position:relative;-webkit-text-decoration:none;text-decoration:none;width:90px}.page-footer-content .block-item .block-content>a:hover{color:#338de6;-webkit-text-decoration:none;text-decoration:none}.page-footer-content .block-item .block-content .block-content-new-icon{height:7px;left:52px;position:absolute;top:3px}網(wǎng)頁(yè)新聞貼吧知道網(wǎng)盤(pán)圖片視頻地圖文庫(kù)資訊采購(gòu)百科百度首頁(yè)登錄注冊(cè)進(jìn)入詞條全站搜索幫助首頁(yè)秒懂百科特色百科知識(shí)專(zhuān)題加入百科百科團(tuán)隊(duì)權(quán)威合作個(gè)人中心40Cr播報(bào)討論上傳視頻標(biāo)準(zhǔn)鋼號(hào)收藏查看我的收藏0有用+1040Cr是一種合金鋼的牌號(hào)，“40”表示鋼的平均含碳量為0.40%，Cr表示鋼中含有的主要合金元素是Cr（鉻），且其平均含量小于1.5%。 [1]40Cr鋼經(jīng)調(diào)質(zhì)處理后具有良好的綜合力學(xué)性能，良好的低溫沖擊韌性和低的缺口敏感性。除調(diào)質(zhì)處理外，還適于氰化和高頻淬火處理。40Cr鋼冷變形塑性中等，切削加工性尚好，焊接性差，韌性指標(biāo)較好。 [2-3]40Cr鋼是機(jī)械制造業(yè)使用最廣泛的鋼之一。主要用于制造承受交變負(fù)荷、中等速度、中等負(fù)荷、強(qiáng)烈磨損而無(wú)很大沖擊的重要零件，如汽車(chē)的轉(zhuǎn)向節(jié)、后半軸、機(jī)床的齒輪及進(jìn)氣閥、增壓閥或減壓器的螺栓等。也可用于制造工作溫度-20~400℃的緊固件，直徑在400毫米以上的要求低溫沖擊韌性的軸與齒輪等。此外，還適于制作中型塑料模具。 [2-3]中文名40Cr外文名40Cr Steel硬 度HRC32-36化學(xué)成分C，Si，Mn，Cr，Ni，P，S，Cu冷卻劑水、油、鹽執(zhí)行標(biāo)準(zhǔn)GB/T3077-2015或GB/T17107-2018目錄1基本信息?化學(xué)成分?力學(xué)性能2常用規(guī)格3標(biāo)準(zhǔn)鋼號(hào)4處理規(guī)范5調(diào)質(zhì)硬度6特性用途7淬火工藝?氮化處理?焊接?交貨狀態(tài)8表示方法9重量計(jì)算基本信息播報(bào)編輯根據(jù)標(biāo)準(zhǔn)GB/T 3077-2015 及GB/T 17107-1997、鋼板GB/T11251-2009及舞陽(yáng)企業(yè)標(biāo)準(zhǔn)對(duì)應(yīng)國(guó)外標(biāo)準(zhǔn):JIS（日本）: SCr440 ；ASTM（美國(guó)）: 5140；ISO: 41Cr4.化學(xué)成分C:0.37~0.4440CrSi:0.17~0.37Mn:0.50~0.80Cr:0.80~1.10Ni:≤0.30P:≤0.035S:≤0.035Cu:≤0.25Mo:≤0.10力學(xué)性能試樣毛坯尺寸（mm）：25熱處理：第一次淬火加熱溫度（℃）：850；冷卻劑：油第二次淬火加熱溫度（℃）：-回火加熱溫度（℃）：520；抗拉強(qiáng)度（σb/MPa）：≥810（實(shí)際硬度25HRC時(shí)）屈服點(diǎn)（σs/MPa）：≥785斷后伸長(zhǎng)率（δ5/%）：≥9斷面收縮率（ψ/%）：≥45沖擊吸收功（Aku2/J）：≥47布氏硬度（100/3000HBW）（退火或高溫回火狀態(tài)）：≤207常用規(guī)格播報(bào)編輯材 質(zhì)規(guī)格厚度*寬度*長(zhǎng)度（mm）重 量名 稱(chēng)40Cr8*1500-4020*6000*1800093.154T合金板40Cr10*1500-4020*6000*1800065.324T合金板40Cr15*1500-4020*6000*18000161.657T合金板40Cr20*1500-4020*6000*1800082.165T合金板40Cr25*1500-4020*6000*18000182.635T合金板40Cr30*1500-4020*6000*18000264.823T合金板40Cr35*1500-4020*6000*18000135.924T合金板40Cr40*1500-4020*6000*18000265.324T合金板40Cr50*1500-4020*6000*18000392.059T合金板40Cr60*1500-4020*6000*18000265.871T合金板40Cr70*1500-4020*6000*18000293.153T合金板40Cr80*1500-4020*6000*18000281.716T合金板40Cr90*1500-4020*6000*18000195.985T合金板40Cr100*1500-4020*6000*18000236.920T合金板40Cr120*1500-4020*6000*18000182.689T合金板40Cr150*1500-4020*6000*18000264.816T合金板標(biāo)準(zhǔn)鋼號(hào)播報(bào)編輯中國(guó)GB的標(biāo)準(zhǔn)鋼號(hào)是40Cr；德國(guó)DIN標(biāo)準(zhǔn)材料編號(hào)1.7035/1.7045、德國(guó)DIN標(biāo)準(zhǔn)鋼號(hào)41Cr4/42Gr4；英國(guó)EN標(biāo)準(zhǔn)鋼號(hào)18、英國(guó)BS標(biāo)準(zhǔn)鋼號(hào)41Cr4；法國(guó)AFNOR標(biāo)準(zhǔn)鋼號(hào)42C4、法國(guó)NF標(biāo)準(zhǔn)鋼號(hào)38Cr4/41Cr4；意大利UNI標(biāo)準(zhǔn)鋼號(hào)41Cr4；比利時(shí)NBN標(biāo)準(zhǔn)鋼號(hào)42Cr4；瑞典SS標(biāo)準(zhǔn)鋼號(hào)2245；美國(guó)AISI/SAE/ASTM標(biāo)準(zhǔn)鋼號(hào)5140；日本JIS標(biāo)準(zhǔn)鋼號(hào)SCr440(H)/SCr440；國(guó)際標(biāo)準(zhǔn)化組織ISO標(biāo)準(zhǔn)鋼號(hào)41Cr4。處理規(guī)范播報(bào)編輯【臨界點(diǎn)溫度】（近似值） Ac3=780℃【正火規(guī)范】溫度850~870℃，硬度179~229HBW?！纠鋲好鬈浕幚硪?guī)范】溫度740~760℃，保溫時(shí)間4~6h，再以5~10℃/h的冷速，降溫到≤600℃，出爐空冷。處理前硬度≤217HBW，軟化后硬度≤163HBW?！旧F屑保護(hù)擺動(dòng)回火規(guī)范】（670±10）℃×2h，隨爐升溫，（710±10）℃×2h，隨爐降溫;（670±10）℃×2h，隨爐升溫，（710±10）℃×2h，再隨爐降溫;（670±10）℃×2h，隨爐升溫, （710±10）℃×2h，隨爐降溫;共3個(gè)循環(huán)，再降溫至550℃，出爐空冷。處理后硬度153HBW?！菊{(diào)質(zhì)處理規(guī)范】淬火溫度850℃ ±10℃，油冷；回火溫度520℃±10℃，水、油、空冷。調(diào)質(zhì)硬度播報(bào)編輯40Cr調(diào)質(zhì)以后的硬度大概在32-36HRC之間,也就是說(shuō)大概301-340HB之間.40Cr--830-860℃油淬--55HRC150℃回火--55HRC200℃回火--53HRC300℃回火--51HRC400℃回火--43HRC500℃回火--34HRC550℃回火--32HRC600℃回火--28HRC650℃回火--24HRC700℃回火--20HRC特性用途播報(bào)編輯特性中碳調(diào)質(zhì)鋼，冷鐓模具鋼。該鋼價(jià)格適中，加工容易，經(jīng)適當(dāng)?shù)臒崽幚硪院罂色@得一定的韌性、塑性和耐磨性。正火可促進(jìn)組織細(xì)化，接近平衡狀態(tài)，可改進(jìn)毛坯的切削性能。在溫度550~570℃進(jìn)行回火，該鋼具有最佳的綜合力學(xué)性能。該鋼的淬透性高于45鋼，適合于高頻淬火，火焰淬火等表面硬化處理等。用途這種鋼經(jīng)調(diào)質(zhì)后用于制造承受中等負(fù)荷及中等速度工作的機(jī)械零件，如汽車(chē)的轉(zhuǎn)向節(jié)、后半軸以及機(jī)床上的齒輪、軸、蝸桿、花鍵軸、頂尖套等；經(jīng)淬火及中溫回火后用于制造承受高負(fù)荷、沖擊及中等速度工作的零件，如齒輪、主軸、油泵轉(zhuǎn)子、滑塊、套環(huán)等；經(jīng)淬火及低溫回火后用于制造承受重負(fù)荷、低沖擊及具有耐磨性、截面上實(shí)體厚度在25mm以下的零件，如蝸桿、主軸、軸、套環(huán)等；經(jīng)調(diào)質(zhì)并高頻表面淬火后用于制造具有高的表面硬度及耐磨性而無(wú)很大沖擊的零件，如齒輪、套筒、軸、主軸、曲軸、心軸、銷(xiāo)子、連桿、 螺釘、螺帽、進(jìn)氣閥等。此外，這種鋼又適于制造進(jìn)行碳氮共滲處理的各種傳動(dòng)零件，如直徑較大和低溫韌性好的齒輪和軸?！?供貨狀態(tài)及硬度】退火態(tài)，硬度≤207HBW。40cr軸類(lèi)零件軸類(lèi)零件是機(jī)器中經(jīng)常遇到的典型零件之一。它主要用來(lái)支承傳動(dòng)零 部件，傳遞扭矩和承受載荷。軸類(lèi)零件是旋轉(zhuǎn)體零件，其長(zhǎng)度大于直徑，一般由同心軸的外圓柱面、圓錐面、內(nèi)孔和螺紋及相應(yīng)的端面所組成。根據(jù)結(jié)構(gòu)形狀的不同，軸類(lèi)零件可分為光軸、階梯軸、空心軸和曲軸等。軸的長(zhǎng)徑比小于5的稱(chēng)為短軸，大于20的稱(chēng)為細(xì)長(zhǎng)軸，大多數(shù)軸介于兩者之間。軸用軸承支承，與軸承配合的軸段稱(chēng)為軸頸。軸頸是軸的裝配基準(zhǔn)，它們的精度和表面質(zhì)量一般要求較高，其技術(shù)要求一般根據(jù)軸的主要功用和工作條件制定，通常有以下幾項(xiàng)：(一).尺寸精度.起支承作用的軸頸為了確定軸的位置，通常對(duì)其尺寸精度要求較高（IT5～I(xiàn)T7）。裝配傳動(dòng)件的軸頸尺寸精度一般要求較低（IT6～I(xiàn)T9）。(二).幾何形狀精度軸類(lèi)零件的幾何形狀精度主要是指軸頸、外錐面、莫氏錐孔等的圓度、圓柱度等，一般應(yīng)將其公差限制在尺寸公差范圍內(nèi)。對(duì)精度要求較高的內(nèi)外圓表面，應(yīng)在圖紙上標(biāo)注其允許偏差。(三).相互位置精度軸類(lèi)零件的位置精度要求主要是由軸在機(jī)械中的位置和功用決定的。通常應(yīng)保證裝配傳動(dòng)件的軸頸對(duì)支承軸頸的同軸度要求，否則會(huì)影響傳動(dòng)件（齒輪等）的傳動(dòng)精度，并產(chǎn)生噪聲。普通精度的軸，其配合軸段對(duì)支承軸頸的徑向跳動(dòng)一般為0.01～0.03mm，高精度軸（如主軸）通常為0.001～0.005mm。(四).表面粗糙度一般與傳動(dòng)件相配合的軸徑表面粗糙度為Ra2.5～0.63μm，與軸承相配合的支承軸徑的表面粗糙度為Ra0.63～0.16μm。毛坯和材料(一).軸類(lèi)零件的毛坯軸類(lèi)零件可根據(jù)使用要求、生產(chǎn)類(lèi)型、設(shè)備條件及結(jié)構(gòu)，選用棒料、鍛件等毛坯形式。對(duì)于外圓直徑相差不大的軸，一般以棒料為主；而對(duì)于外圓直徑相差大的階梯軸或重要的軸，常選用鍛件，這樣既節(jié)約材料又減少機(jī)械加工的工作量，還可改善機(jī)械性能。根據(jù)生產(chǎn)規(guī)模的不同，毛坯的鍛造方式有自由鍛和模鍛兩種。中小批生產(chǎn)多采用自由鍛，大批大量生產(chǎn)時(shí)采用模鍛。(二).軸類(lèi)零件的材料軸類(lèi)零件應(yīng)根據(jù)不同的工作條件和使用要求選用不同的材料并采用不同的熱處理規(guī)范（如調(diào)質(zhì)、正火、淬火等），以獲得一定的強(qiáng)度、韌性和耐磨性。40Cr是軸類(lèi)零件的常用材料，它價(jià)格便宜經(jīng)過(guò)調(diào)質(zhì)（或正火）后，可得到較好的切削性能，而且能獲得較高的強(qiáng)度和韌性等綜合機(jī)械性能，淬火后表面硬度可達(dá)45～52HRC。40Cr等合金結(jié)構(gòu)鋼適用于中等精度而轉(zhuǎn)速較高的軸類(lèi)零件，這類(lèi)鋼經(jīng)調(diào)質(zhì)和淬火后，具有較好的綜合機(jī)械性能。軸承鋼GCr15和彈簧鋼65Mn，經(jīng)調(diào)質(zhì)和表面高頻淬火后，表面硬度可達(dá)50～58HRC，并具有較高的耐疲勞性能和較好的耐磨性能，可制造較高精度的軸。精密機(jī)床的主軸（例如磨床砂輪軸、坐標(biāo)鏜床主軸）可選用38CrMoAIA氮化鋼。這種鋼經(jīng)調(diào)質(zhì)和表面氮化后，不僅能獲得很高的表面硬度，而且能保持較軟的芯部，因此耐沖擊韌性好。與滲碳淬火鋼比較，它有熱處理變形很小，硬度更高的特性。40Cr廣泛用于機(jī)械制造，這種鋼的機(jī)械性能很好。這是一種中碳合金鋼，淬火性能好，40Cr可以淬硬至HRC45~52。所以如果需要提高表面硬度，又希望發(fā)揮40Cr優(yōu)越的機(jī)械性能，常將40Cr調(diào)質(zhì)后進(jìn)行表面高頻淬火處理，硬度可達(dá)55-58HRC,這樣就能得到需要的高的表面硬度又保持了心部好的韌性。40Cr彈性模量E(20℃) /MPa 200000～211700 ，切變模量G(20℃) 80800。淬火工藝播報(bào)編輯40Cr淬火850℃,油冷；回火220℃,水冷、油冷、空冷。40Cr表面淬火硬度為52-60HRC，火焰淬火能達(dá)到48-55HRC。氮化處理40Cr屬于可氮化鋼，其所含元素有利于氮化。40Cr經(jīng)氮化處理后可獲得較高的表面硬度，40Cr調(diào)質(zhì)后氮化處理硬度最高能達(dá)到72~78HRA，心部硬度達(dá)到43~55HRC。氮化工件工藝路線：鍛造－退火－粗加工－調(diào)質(zhì)－精加工－除應(yīng)力－粗磨－氮化－精磨或研磨。由于氮化層薄，并且較脆，因此要求有較高強(qiáng)度的心部組織，所以要先進(jìn)行調(diào)質(zhì)熱處理，獲得回火索氏體，提高心部機(jī)械性能和氮化層質(zhì)量。焊接40Cr焊接前注意預(yù)熱，以防止因基體散熱，造成焊縫內(nèi)部激冷淬裂。焊接后調(diào)質(zhì)前最好加一遍正火。40Cr的焊接性：結(jié)晶時(shí)易偏析，對(duì)結(jié)晶裂紋（一種熱裂紋）比較敏感，焊接時(shí)容易在弧坑和焊縫中凹下的部分開(kāi)裂。含碳量較高，快冷時(shí)易得到對(duì)冷裂紋很敏感的淬硬組織（馬氏體組織）。過(guò)熱區(qū)在冷速較大時(shí)，很容易形成硬脆的高碳馬氏體而使過(guò)熱區(qū)脆化。焊接工藝要點(diǎn)：1、一般在退火（正火）狀態(tài)下進(jìn)行焊接。2、焊接方法不受限制。3、用較大線能量，適當(dāng)提高預(yù)熱溫度，一般預(yù)熱溫度及層間溫度可控制在250～300℃之間。4、焊接材料應(yīng)保證熔敷金屬的成分與母材基本相同，如J107－Cr。5、焊后應(yīng)及時(shí)進(jìn)行調(diào)質(zhì)熱處理。若及時(shí)進(jìn)行調(diào)質(zhì)處理有困難，可進(jìn)行中間退火或在高于預(yù)熱的溫度下保溫一段時(shí)間，以排除擴(kuò)散氫并軟化組織。 對(duì)結(jié)構(gòu)復(fù)雜、焊縫較多的產(chǎn)品，可在焊完一定數(shù)量的焊縫后，進(jìn)行一次中間退火。生鐵屑保護(hù)擺動(dòng)回火規(guī)范（670±10）℃×2h，隨爐升溫，（710±10）℃×2h，隨爐降溫，（670±10）℃×2h，隨爐升溫，（710±10）℃×2h，再隨爐降溫，（670±10）℃×2h，隨爐升溫, （710±10）℃×2h，隨爐降溫,共3個(gè)循環(huán)， 再降溫至550℃，出爐空冷。處理后硬度153HBS。交貨狀態(tài)40Cr交貨狀態(tài)以熱處理(正火、退火或高溫回火)或不熱處理狀態(tài)交貨,交貨狀態(tài)應(yīng)在合同中注明。表示方法播報(bào)編輯① 鋼號(hào)開(kāi)頭的兩位數(shù)字表示鋼的碳含量，以平均碳含量的萬(wàn)分之幾表示，如40Cr、25Cr2MoVA合金管②鋼中主要合金元素，除個(gè)別微合金元素外，一般以百分之幾表示。當(dāng)平均合金含量小于1.5%時(shí)，鋼號(hào)中一般只標(biāo)出元素符號(hào)，而不標(biāo)明含量，但在特殊情況下易致混淆者，在元素符號(hào)后亦可標(biāo)以數(shù)字"1"，例如鋼號(hào)"12CrMoV"和"12Cr1MoV"，前者鉻含量為0.4-0.6%，后者為0.9-1.2%，其余成分全部相同。當(dāng)合金元素平均含量≥1.5%、≥2.5%、≥3.5%……時(shí)，在元素符號(hào)后面應(yīng)標(biāo)明含量，可相應(yīng)表示為2、3、4……等。例如18Cr2Ni4WA。③鋼中的釩V、鈦Ti、鋁AL、硼B(yǎng)、稀土RE等合金元素，均屬微合金元素，雖然含量很低，仍應(yīng)在鋼號(hào)中標(biāo)出。例如20MnVB鋼中。釩為0.07-0.12%，硼為0.001-0.005%。④高級(jí)優(yōu)質(zhì)鋼應(yīng)在鋼號(hào)最后加"A"，以區(qū)別于一般優(yōu)質(zhì)鋼。重量計(jì)算播報(bào)編輯◆扁鋼:每米重量(公斤)=0.00785×厚度×邊寬◆管材:每米重量(公斤)=0.02466×壁厚×(外徑-壁厚)◆板材:每米重量(公斤)=0.785×厚度◆圓鋼:每米重量(公斤)=0.00617×直徑×直徑(注:螺紋鋼和圓鋼相同)新手上路成長(zhǎng)任務(wù)編輯入門(mén)編輯規(guī)則本人編輯我有疑問(wèn)內(nèi)容質(zhì)疑在線客服官方貼吧意見(jiàn)反饋投訴建議舉報(bào)不良信息未通過(guò)詞條申訴投訴侵權(quán)信息封禁查詢(xún)與解封?2025?Baidu?使用百度前必讀?|?百科協(xié)議?|?隱私政策?|?百度百科合作平臺(tái)?|?京ICP證030173號(hào)?京公網(wǎng)安備11000002000001號(hào)window.PAGE_DATA= {"lemmaId":7485630,"lemmaTitle":"40Cr","lemmaDesc":"標(biāo)準(zhǔn)鋼號(hào)","lemmaType":0,"uid":96238002,"uname":"maomao1917","createTime":1226234233,"updateTime":1749091758,"isDefault":0,"isDeleted":0,"rank":1,"extData":{"LemmaId":1979559,"audit_comment_category":2,"classify":[{"id":1033565,"idPath":"1033565/1033595/1033763","leafId":1033763,"leafName":"材料學(xué)術(shù)語(yǔ)","mainCategory":1,"name":"應(yīng)用科學(xué)","path":"應(yīng)用科學(xué)/材料學(xué)/材料學(xué)術(shù)語(yǔ)"}],"discussion":{"relateInfo":[{"relateId":32990,"relateType":1},{"relateId":33010,"relateType":1}]},"helloEarth":1,"isBaikeV6":1,"isFrontV6":1,"isSapp":0,"isWaitForPersonal":false,"is_locked":0,"kpdClassify":[{"id":337502,"name":"工業(yè)產(chǎn)品"}],"lemmaId":1979559,"lemma_id":1979559,"newEditor":1,"pass_count":109,"redirectFrom":[{"fromLemmaId":10073339,"fromTitle":"40Cr合金管"},{"fromLemmaId":7417674,"fromTitle":"40cr無(wú)縫鋼管"},{"fromLemmaId":9642473,"fromTitle":"40cr合金鋼管"},{"fromLemmaId":7269311,"fromTitle":"40Cr特鋼"},{"fromLemmaId":7799816,"fromTitle":"40cr圓鋼"},{"fromLemmaId":8241918,"fromTitle":"40cr合金鋼"},{"fromLemmaId":1902073,"fromTitle":"40Cr鋼材"}],"subLemmaId":1979559,"updateTime":1749091759,"wapEdit":0},"extFlag":0,"versionId":642171593,"versionUid":266268683,"versionUname":"canguanxihu","versionContributeFlag":{"flagId":1,"name":"百科蝌蚪團(tuán)","url":"https://baike.baidu.com/kedou"},"versionCreateTime":1747099373,"catalog":[{"level":1,"title":"基本信息","index":"1","uuid":"gnwxo9s9qd","height":28},{"level":2,"title":"化學(xué)成分","index":"1-1","uuid":"gnwxp1lbct","height":21},{"level":2,"title":"力學(xué)性能","index":"1-2","uuid":"gnwxoimm7k","height":21},{"level":1,"title":"常用規(guī)格","index":"2","uuid":"gnwxqhx7lk","height":28},{"level":1,"title":"標(biāo)準(zhǔn)鋼號(hào)","index":"3","uuid":"gnwxowet60","height":28},{"level":1,"title":"處理規(guī)范","index":"4","uuid":"uL2iPGGB98GX","height":28},{"level":1,"title":"調(diào)質(zhì)硬度","index":"5","uuid":"gnwxqj2yoa","height":28},{"level":1,"title":"特性用途","index":"6","uuid":"gnwxqj2yqc","height":28},{"level":1,"title":"淬火工藝","index":"7","uuid":"gnwxoyht0r","height":28},{"level":2,"title":"氮化處理","index":"7-1","uuid":"gnwxoyht2h","height":21},{"level":2,"title":"焊接","index":"7-2","uuid":"gnwxoyht48","height":21},{"level":2,"title":"交貨狀態(tài)","index":"7-3","uuid":"gnwxoyht68","height":21},{"level":1,"title":"表示方法","index":"8","uuid":"gnwxoyht7x","height":28},{"level":1,"title":"重量計(jì)算","index":"9","uuid":"gnwxoyht9r","height":28}],"abstract":[],"abstractAlbum":{"content":[{"albumId":1,"src":"6a63f6246b600c33fd9624271a4c510fd8f9a176","width":554,"height":372,"uuid":"yctqnrg0ge"}],"desc":"概述圖冊(cè)","total":1,"coverPic":{"albumId":1,"url":"https://bkimg.cdn.bcebos.com/pic/6a63f6246b600c33fd9624271a4c510fd8f9a176?x-bce-process=image/resize,m_lfit,w_536,limit_1/quality,Q_70","src":"6a63f6246b600c33fd9624271a4c510fd8f9a176","origSrc":"6a63f6246b600c33fd9624271a4c510fd8f9a176","width":554,"height":372,"uuid":"yctqnrg0ge"}},"reference":[{"type":3,"text":"陳文鳳主編. 機(jī)械工程材料[M]. 北京：北京理工大學(xué)出版社, 2018：109.","isPublic":"1","index":1,"uuid":"uE3ApRujkKfE","imgs":[{"url":"b999a9014c086e061d955fd4b3516cf40ad163d95da0","viewUrl":"https://bkimg.cdn.bcebos.com/pic/b999a9014c086e061d955fd4b3516cf40ad163d95da0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCmI5OTlhOTAxNGMwODZlMDYxZDk1NWY,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","previewUrl":"https://bkimg.cdn.bcebos.com/pic/b999a9014c086e061d955fd4b3516cf40ad163d95da0?x-bce-process=image/resize,m_lfit,w_235,h_235,limit_1"},{"url":"0bd162d9f2d3572c11dff4433b4a742762d0f60365a0","viewUrl":"https://bkimg.cdn.bcebos.com/pic/0bd162d9f2d3572c11dff4433b4a742762d0f60365a0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCjBiZDE2MmQ5ZjJkMzU3MmMxMWRmZjQ,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","previewUrl":"https://bkimg.cdn.bcebos.com/pic/0bd162d9f2d3572c11dff4433b4a742762d0f60365a0?x-bce-process=image/resize,m_lfit,w_235,h_235,limit_1"}]},{"type":3,"text":"陳再枝，藍(lán)德年，馬黨參編著. 模具鋼手冊(cè) 第2版[M]. 北京：冶金工業(yè)出版社, 2020：317.","isPublic":"1","index":2,"uuid":"uE3AVqiVBBCa","imgs":[{"url":"9825bc315c6034a85edf5f1e7a4a5e540923dc54d8a0","viewUrl":"https://bkimg.cdn.bcebos.com/pic/9825bc315c6034a85edf5f1e7a4a5e540923dc54d8a0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCjk4MjViYzMxNWM2MDM0YTg1ZWRmNWY,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","previewUrl":"https://bkimg.cdn.bcebos.com/pic/9825bc315c6034a85edf5f1e7a4a5e540923dc54d8a0?x-bce-process=image/resize,m_lfit,w_235,h_235,limit_1"},{"url":"bd315c6034a85edf8db118bcf80d1e23dd54574edfa0","viewUrl":"https://bkimg.cdn.bcebos.com/pic/bd315c6034a85edf8db118bcf80d1e23dd54574edfa0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCmJkMzE1YzYwMzRhODVlZGY4ZGIxMTg,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","previewUrl":"https://bkimg.cdn.bcebos.com/pic/bd315c6034a85edf8db118bcf80d1e23dd54574edfa0?x-bce-process=image/resize,m_lfit,w_235,h_235,limit_1"}]},{"type":3,"text":"王洪明編. 結(jié)構(gòu)鋼手冊(cè)[M]. 石家莊：河北科學(xué)技術(shù)出版社, 1985：250-251.","isPublic":"1","index":3,"uuid":"uE3BiLkWDWec","imgs":[{"url":"9f510fb30f2442a7d933d625601aba4bd11372f0a4a0","viewUrl":"https://bkimg.cdn.bcebos.com/pic/9f510fb30f2442a7d933d625601aba4bd11372f0a4a0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCjlmNTEwZmIzMGYyNDQyYTdkOTMzZDY,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","previewUrl":"https://bkimg.cdn.bcebos.com/pic/9f510fb30f2442a7d933d625601aba4bd11372f0a4a0?x-bce-process=image/resize,m_lfit,w_235,h_235,limit_1"},{"url":"d043ad4bd11373f082027e1f15565cfbfbedaa64aea0","viewUrl":"https://bkimg.cdn.bcebos.com/pic/d043ad4bd11373f082027e1f15565cfbfbedaa64aea0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCmQwNDNhZDRiZDExMzczZjA4MjAyN2U,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","previewUrl":"https://bkimg.cdn.bcebos.com/pic/d043ad4bd11373f082027e1f15565cfbfbedaa64aea0?x-bce-process=image/resize,m_lfit,w_235,h_235,limit_1"}]}],"modules":{"adManager":{"data":{"AI":0,"discussionHelpEdit":0,"wapRelatedBusiness":1}},"discussion":{"showHelpEdit":1},"globalConfig":{"data":{"serviceAdLemmaCategory":[337597,337474]}},"paper":{"switch":true},"second":{"head":[{"secondId":24735766,"type":1,"form":1,"style":1,"source":1,"sourceId":"4600635034246602642","authorType":1,"platform":1,"lemma":{"relType":1,"relValue":[],"te":0,"tr":[],"ts":0,"tw":0,"type":1,"weight":0},"score":2,"createTime":1573218259,"publishTime":1573473980,"isPay":0,"collectionId":0}]},"pinzhuan":{}},"albums":[{"albumId":1,"desc":"概述圖冊(cè)","total":1,"coverPic":{"albumId":1,"src":"6a63f6246b600c33fd9624271a4c510fd8f9a176","url":"https://bkimg.cdn.bcebos.com/pic/6a63f6246b600c33fd9624271a4c510fd8f9a176?x-bce-process=image/resize,m_lfit,w_536,limit_1/quality,Q_70","width":554,"height":372,"desc":"概述圖冊(cè)","uuid":"yctqnrg0ge"},"content":[{"albumId":1,"src":"6a63f6246b600c33fd9624271a4c510fd8f9a176","url":"","width":554,"height":372,"uuid":"yctqnrg0ge"}]},{"albumId":0,"desc":"詞條圖片","total":1,"coverPic":{"albumId":0,"tag":"image","type":"normal","src":"fcfaaf51f3deb48f4f875b31f01f3a292cf57877","url":"https://bkimg.cdn.bcebos.com/pic/fcfaaf51f3deb48f4f875b31f01f3a292cf57877?x-bce-process=image/resize,m_lfit,w_220,h_220,limit_1","width":554,"height":354,"cropWidth":220,"cropHeight":140.5776,"owner":"愛(ài)笑的在的","title":"40Cr","layout":"right","style":"float: right;","uuid":"igkm57bfvnl"},"content":[{"albumId":0,"tag":"image","type":"normal","src":"fcfaaf51f3deb48f4f875b31f01f3a292cf57877","url":"https://bkimg.cdn.bcebos.com/pic/fcfaaf51f3deb48f4f875b31f01f3a292cf57877?x-bce-process=image/resize,m_lfit,w_220,h_220,limit_1","width":554,"height":354,"cropWidth":220,"cropHeight":140.5776,"owner":"愛(ài)笑的在的","title":"40Cr","layout":"right","style":"float: right;","uuid":"igkm57bfvnl"}]},{"albumId":11,"desc":"參考資料圖冊(cè)","total":6,"coverPic":{"albumId":11,"src":"b999a9014c086e061d955fd4b3516cf40ad163d95da0","url":"https://bkimg.cdn.bcebos.com/pic/b999a9014c086e061d955fd4b3516cf40ad163d95da0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCmI5OTlhOTAxNGMwODZlMDYxZDk1NWY,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","width":0,"height":0,"uuid":"uE3ApRujkKfE"},"content":[{"albumId":11,"src":"b999a9014c086e061d955fd4b3516cf40ad163d95da0","url":"https://bkimg.cdn.bcebos.com/pic/b999a9014c086e061d955fd4b3516cf40ad163d95da0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCmI5OTlhOTAxNGMwODZlMDYxZDk1NWY,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","width":0,"height":0,"uuid":"uE3ApRujkKfE"},{"albumId":11,"src":"0bd162d9f2d3572c11dff4433b4a742762d0f60365a0","url":"https://bkimg.cdn.bcebos.com/pic/0bd162d9f2d3572c11dff4433b4a742762d0f60365a0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCjBiZDE2MmQ5ZjJkMzU3MmMxMWRmZjQ,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","width":0,"height":0,"uuid":"uE3ApRujkKfE"},{"albumId":11,"src":"9825bc315c6034a85edf5f1e7a4a5e540923dc54d8a0","url":"https://bkimg.cdn.bcebos.com/pic/9825bc315c6034a85edf5f1e7a4a5e540923dc54d8a0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCjk4MjViYzMxNWM2MDM0YTg1ZWRmNWY,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","width":0,"height":0,"uuid":"uE3AVqiVBBCa"},{"albumId":11,"src":"bd315c6034a85edf8db118bcf80d1e23dd54574edfa0","url":"https://bkimg.cdn.bcebos.com/pic/bd315c6034a85edf8db118bcf80d1e23dd54574edfa0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCmJkMzE1YzYwMzRhODVlZGY4ZGIxMTg,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","width":0,"height":0,"uuid":"uE3AVqiVBBCa"},{"albumId":11,"src":"9f510fb30f2442a7d933d625601aba4bd11372f0a4a0","url":"https://bkimg.cdn.bcebos.com/pic/9f510fb30f2442a7d933d625601aba4bd11372f0a4a0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCjlmNTEwZmIzMGYyNDQyYTdkOTMzZDY,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","width":0,"height":0,"uuid":"uE3BiLkWDWec"},{"albumId":11,"src":"d043ad4bd11373f082027e1f15565cfbfbedaa64aea0","url":"https://bkimg.cdn.bcebos.com/pic/d043ad4bd11373f082027e1f15565cfbfbedaa64aea0?x-bce-process=image/watermark,text_55m-5bqm55m-56eRCmQwNDNhZDRiZDExMzczZjA4MjAyN2U,g_3,x_10,y_10,type_RlpLYWk=,a_-30,size_28,color_00000040,skc_ffffff40,skw_1,layout_tile","width":0,"height":0,"uuid":"uE3BiLkWDWec"}]}],"card":{"type":90,"left":[{"key":"name","title":"中文名","isArray":false,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"40Cr"}]}]},{"key":"foreignName","title":"外文名","isArray":true,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"40Cr Steel"}]}]},{"key":"customDefault","title":"硬度","isArray":false,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"HRC32-36"}]}]}],"right":[{"key":"customDefault","title":"化學(xué)成分","isArray":false,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"C，Si，Mn，Cr，Ni，P，S，Cu"}]}]},{"key":"customDefault","title":"冷卻劑","isArray":false,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"水、油、鹽"}]}]},{"key":"customDefault","title":"執(zhí)行標(biāo)準(zhǔn)","isArray":false,"delimiter":"","data":[{"dataType":"text","text":[{"tag":"text","text":"GB/T3077-2015或GB/T17107-2018"}]}]}]},"lemmaCnt":1,"tips":{"isPolyseme":0},"encodeLemmaId":"dfbc67e9f9262e1aaff83c1e","versionUk":"fv8Zj65Zs9zskMPk1O8oJw","description":"40Cr是一種合金鋼的牌號(hào)，“40”表示鋼的平均含碳量為0.40%，Cr表示鋼中含有的主要合金元素是Cr（鉻），且其平均含量小于1.5%。40Cr鋼經(jīng)調(diào)質(zhì)處理后..."}window.__abbaidu_2020_subidgetf||(window.__abbaidu_2020_subidgetf=function(){return"01000000"}) 詳細(xì)信息 規(guī)格 8-50*1800-2000 產(chǎn)地/廠家 寶鋼 材質(zhì) SPHD 分類(lèi) 鋼材 熱軋薄板（卷） 酸洗板（卷） 40Cr扁鋼，40Cr鋼板，40Cr特鋼扁鋼，40Cr扁鋼長(zhǎng)特/撫順特鋼產(chǎn)，長(zhǎng)期供應(yīng)！ 合結(jié)鋼 扁鋼 16*2000 40Cr鋼板 上海 撫順/長(zhǎng)特 總庫(kù) 合結(jié)鋼 扁鋼 20*2000 40Cr鋼板 上海 撫順/長(zhǎng)特 總庫(kù) 合結(jié)鋼 扁鋼 25*2200 40Cr鋼板 上海 撫順/長(zhǎng)特 總庫(kù) 合結(jié)鋼 扁鋼 25*2000 40Cr鋼板 上海 撫順/長(zhǎng)特 總庫(kù) 40Cr扁鋼，40Cr鋼板，40Cr特鋼扁鋼，40Cr扁鋼長(zhǎng)特/撫順特鋼產(chǎn)，現(xiàn)貨長(zhǎng)期優(yōu)價(jià)供應(yīng)
滬ICP備2021035645號(hào)
在線客服