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B168等標(biāo)準(zhǔn)。該合金在氧化/還原環(huán)境中均具有優(yōu)異的耐酸堿腐蝕能力，抗應(yīng)力腐蝕開(kāi)裂性能突出，可耐受550℃高溫并獲450℃壓力容器認(rèn)證。其加工需采用惰性氣體保護(hù)焊接工藝，焊材推薦Nicrofer S 6020-FM625，焊前需保持材料退火狀態(tài)及表面清潔。主要應(yīng)用于硫酸酸洗設(shè)備、石油精煉換熱器、海水冷卻系統(tǒng)、航空航天部件等領(lǐng)域。中文名解 釋鈦穩(wěn)定化處理全奧氏體鎳鐵鉻合金化學(xué)成分鎳Ni：38-46特 性好的耐應(yīng)力腐蝕開(kāi)裂性能目錄1產(chǎn)品簡(jiǎn)介?相近牌號(hào)?化學(xué)成分2合金特性3合金應(yīng)用領(lǐng)域4焊接產(chǎn)品簡(jiǎn)介播報(bào)編輯在氧化和還原環(huán)境下都具有抗酸和堿金屬腐蝕性能。高鎳成份使合金具有有效的抗應(yīng)力腐蝕開(kāi)裂性。在各種介質(zhì)中的耐腐蝕性都很好，如硫酸、磷酸、硝酸和有機(jī)酸，堿金屬如氫氧化鈉、氫氧化鉀和鹽酸溶液。NS142較高的綜合性能表現(xiàn)在腐蝕介質(zhì)多樣的核燃燒溶解器中，如硫酸、硝酸和氫氧化鈉都在同一個(gè)設(shè)備中處理。NS142化學(xué)成分與相近牌號(hào)相近牌號(hào)NC21FeDu (法國(guó))、.2.4858 NiCr21Mo (德國(guó)) NA16 (英國(guó)) NS142、UNS NO8825（美國(guó)）NiFe30Cr21Mo3（ISO）化學(xué)成分鎳Ni：38-46鉻Cr：19.5-23.5鐵Fe：余量碳C：≤0.025錳Mn：≤1.0硅Si：≤0.5鉬Mo：2.5-3.5銅Cu：1.5-3.0鈷Co：≤1.0鋁Al：≤0.2鈦Ti：0.6-1.2合金特性播報(bào)編輯●好的耐應(yīng)力腐蝕開(kāi)裂性能●好的耐點(diǎn)腐蝕和縫隙腐蝕性能●很好的抗氧化性和非氧化性熱酸性能●在室溫和高達(dá)550℃的高溫時(shí)都具有很好的機(jī)械性能●具有制造溫度達(dá)450℃的壓力容器的認(rèn)證合金應(yīng)用領(lǐng)域播報(bào)編輯NS142廣泛應(yīng)用于各種使用溫度不超過(guò)550℃的工業(yè)領(lǐng)域。典型應(yīng)用為：●硫酸酸洗工廠用的加熱管、容器、筐及鏈等。●海水冷卻熱交換器、海洋產(chǎn)品管道系統(tǒng)、酸性氣體環(huán)境管道?！窳姿嵘a(chǎn)中的熱交換器、蒸發(fā)器、洗滌、浸漬管等?！袷途珶捴械目諝鉄峤粨Q器●食品工程●化工流程●壓氧氣應(yīng)用的阻燃合金焊接播報(bào)編輯NS142適合采用任何傳統(tǒng)焊接工藝與同種材料或其他金屬焊接，如鎢電極惰性氣體保護(hù)焊、等離子弧焊、手工亞弧焊、金屬極惰性氣體保護(hù)焊、熔化極惰性氣體保護(hù)焊，其中脈沖電弧焊是首選方案。在采用手工電弧焊時(shí)，推薦使用(Ar+He+H2+CO2)多種成份混合的保護(hù)氣體。NS142的焊接必須在退火態(tài)進(jìn)行，并使用不銹鋼絲刷清理干凈污漬、粉塵和各種記號(hào)。在焊縫根部焊接時(shí)，為得到最佳的根部焊縫質(zhì)量，操作必須非常小心(氬氣99.99)，這樣在根部焊接完后焊縫就不產(chǎn)生氧化物。焊接熱影響區(qū)產(chǎn)生的顏色要在焊縫區(qū)域未冷卻時(shí)用不銹鋼刷刷去。焊接材料對(duì)于氣體保護(hù)焊接工藝，推薦采用以下的填充金屬金屬焊條：Nicrofer S 6020-FM625材料號(hào)2.4831SG- NiCr21Mo9NbAWS A5.14: ERNiCrMo-3藥皮焊條材料號(hào)2.4621EL- 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NiCr21Mo）是一種鈦穩(wěn)定化處理的全奧氏體鎳鐵鉻合金，屬于通用型工程材料。其化學(xué)成分以鎳（..."}window.__abbaidu_2020_subidgetf||(window.__abbaidu_2020_subidgetf=function(){return"01000000"}) NS142耐蝕合金NS142合金是一種通用的工程合金，在氧化和還原環(huán)境下都具有抗酸和堿金屬腐蝕性能高鎳成份使合金具有有效的抗應(yīng)力腐蝕開(kāi)裂性。在各種介質(zhì)中的耐腐蝕性都 很好，如硫酸、磷酸、硝酸和有機(jī)酸，堿金屬如氫氧化鈉、氫氧化鉀和鹽酸溶液。合金的綜合性能表現(xiàn)在腐蝕介質(zhì)多樣的核燃燒溶解器中，如硫酸、硝酸和氫氧化鈉 都在同一個(gè)設(shè)備中處理。應(yīng)用于各種使用溫度不超過(guò)550℃的工業(yè)領(lǐng)域，如：硫酸酸洗工廠用的加熱管、容器、筐及鏈等、海水冷卻熱交換器、海洋產(chǎn)品管道系 統(tǒng)、酸性氣體環(huán)境管道、磷酸生產(chǎn)中的熱交換器、蒸發(fā)器、洗滌、浸漬管等、石油精煉中的空氣熱交換器、食品工程、化工流程、高壓氧氣應(yīng)用的阻燃合金等。NS142工藝性能與要求：1、合金加熱環(huán)境含有硫、磷、鉛或其他低熔點(diǎn)金屬，Nicrofer 6023/6023H 合金將變脆。雜質(zhì)來(lái)源于做標(biāo)記的油漆、粉筆、潤(rùn)滑油、水、燃料等。燃料的硫含量要低，如液化氣和天然氣的雜質(zhì)含量要低于0.1%，城市煤氣的硫含量要低于 0.25g/m3，石油氣的硫含量低于0.5%是理想的。2、合金合適的熱加工溫度為1150-900℃，冷卻方式可以是水淬或快速空冷。3、采用鎢電極惰性氣體保護(hù)焊、等離子弧焊、手工亞弧焊、金屬極惰性氣體保護(hù)焊、熔化極惰性氣體保護(hù)焊，其中脈沖電弧焊是方案。 PRODUCT PARAMETERS 產(chǎn)品參數(shù) NS142 化學(xué)成份：（GB/T14992-2005）合金%鎳Ni鉻Cr鐵Fe鉬Mo鈷Co碳C錳Mn硅Si硫S磷P銅Cu鋁Al鈦TiNS142小38.019.5余量2.51.50.6大46.023.53.50.0251.00.50.010.023.00.21.2NS142 物理性能：密度g/cm3熔點(diǎn)℃熱導(dǎo)率λ/(W/m?℃)比熱容J/kg?℃彈性模量GPa剪切模量GPa電阻率μΩ?m泊松比線膨脹系數(shù)a/10-6℃-18.11370140010.8(100℃)4401951.3714.1(20~100℃) 上一頁(yè)：Incoloy 028
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