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SCM440合金圓鋼-合金結(jié)構(gòu)鋼
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應(yīng)42crmo4目錄1產(chǎn)品簡介2特性及應(yīng)用3化學(xué)成份4力學(xué)性能5熱處理工藝產(chǎn)品簡介播報編輯材料名稱：合金結(jié)構(gòu)鋼牌號：(日本牌號，見標(biāo)準(zhǔn)JIS G4053-2008 ,類似中國牌號42CrMo)對應(yīng):42crmo4特性及適用范圍：屬中等淬透性鋼，熱處理后有較好的強度和良好的綜合力學(xué)性能，工藝性好，成材率高。最高使用溫度為 427℃?？捎米髌啓C緊固件。特性及應(yīng)用播報編輯1。淬火性好，可進行深度淬火，而不是市面上防鋸形鎖的表面淬火2。對回火脆性傾向少3。高溫加工性好，加工后美觀4。熔接性好5。沖擊的吸收性能好，錘子砸上去會有反彈感，無法進行暴力破壞優(yōu)點：(1).加工性好(2).沖擊的吸收性能好(3).焊接容易化學(xué)成份播報編輯C 0.38-0.43Si 0.15-0.35Mn 0.60-0.85P ≤0.03S ≤0.03Cu ≤0.30Ni ≤0.25Cr 0.90-1.20MO 0.15-0.30Ni≤0.25Cu≤0.30力學(xué)性能播報編輯抗拉強度 σb (MPa)：≥1080(110)屈服強度 σs (MPa)：≥930(95)伸長率 δ5 (%)：≥12斷面收縮率 ψ (%)：≥45沖擊功 Akv (J)：≥63沖擊韌性值 αkv (J/cm2)：≥78(8)硬度 ：≤217HB試樣尺寸：試樣毛坯尺寸為25mm●熱處理規(guī)范及金相組織：熱處理規(guī)范：880℃,1h油淬,650～680℃，2h回火,空冷。金相組織：回火馬氏體。熱處理工藝播報編輯退火 [1]annealing No.1 760±10℃退火，爐冷至400℃空冷。HB220-230正火normalize No.4 860±10℃正火，出爐空冷。調(diào)質(zhì)quenching+tempering No.5 840±10℃淬水或油（視產(chǎn)品型號復(fù)雜程度），680-700度回火。 HB小于217調(diào)質(zhì)quenching+tempering No.6 840±10℃淬油，再470度回火處理。 HRC41-45調(diào)質(zhì)quenching+tempering No.7 840±10℃淬油，再480度回火處理。 HRC35-45調(diào)質(zhì)quenching+tempering No.8 850℃淬油，再510度回火處理。 HRC38-42調(diào)質(zhì)quenching+tempering No.9 850℃淬油，再500度回火處理。 HRC40-43調(diào)質(zhì)quenching+tempering No.10 850℃淬油，再510℃回火處理。 HRC36-42調(diào)質(zhì)quenching+tempering No.11 850℃淬油，再560℃回火處理。 HRC32-36調(diào)質(zhì)quenching+tempering No.12 860℃淬油，再390度回火處理。 HRC48-52 42CrMo圓棒新手上路成長任務(wù)編輯入門編輯規(guī)則本人編輯我有疑問內(nèi)容質(zhì)疑在線客服官方貼吧意見反饋投訴建議舉報不良信息未通過詞條申訴投訴侵權(quán)信息封禁查詢與解封?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?|?京ICP證030173號?京公網(wǎng)安備11000002000001號window.PAGE_DATA= 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結(jié)構(gòu)鋼結(jié)構(gòu)鋼是指符合特定強度和可成形性等級的鋼?？沙尚涡砸钥估囼炛袛嗪笊扉L率表示。結(jié)構(gòu)鋼一般用于承載等用途，在這些用途中鋼的強度是一個重要設(shè)計標(biāo)準(zhǔn)。結(jié)構(gòu)鋼可以細(xì)分為：合金結(jié)構(gòu)鋼、碳素結(jié)構(gòu)鋼、低合金結(jié)構(gòu)鋼、耐熱結(jié)構(gòu)鋼等等。分類優(yōu)質(zhì)碳素結(jié)構(gòu)鋼和普通碳素結(jié)構(gòu)鋼相比，硫﹑磷及其它非金屬夾雜物的含量較低。根據(jù)含碳量和用途的不同，這類鋼大致又分為三類：1、 小于0.25%C為低碳鋼，其中尤以含碳低于0.10%的08F，08Al等，由于具有很好的深沖性和焊接性而被廣泛地用作深沖件如汽車﹑制罐......等，20G則是制造普通鍋爐的主要材料。此外，低碳鋼也廣泛地作為滲碳鋼，用于機械制造業(yè)。2、0.25～0.60%C為中碳鋼，多在調(diào)質(zhì)狀態(tài)下使用，制作機械制造工業(yè)的零件。調(diào)質(zhì)多少22~34HRC，能得到綜合機械性能，也便于切削。3、大于0.6%C為高碳鋼，多用于制造彈簧﹑齒輪﹑軋輥等，根據(jù)含錳量的不同，又可分為普通含錳量（0.25～0.8%）和較高含錳量（0.7～1.0%和0.9～1.2%）兩鋼組。錳能改善鋼的淬透性，強化鐵素體，提高鋼的屈服強度﹑抗拉強度和耐磨性。通常在含錳高的鋼的牌號后附加標(biāo)記“Mn”，如15Mn﹑20Mn以區(qū)別于正常含錳量的碳素鋼。碳素工具鋼含碳量在0.65～1.35%之間，經(jīng)熱處理后可得到高硬度和高耐磨性，主要用于制造各種工具﹑刃具﹑模具和量具（見工具鋼）。
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