(1)易切削结构钢的化学成分(表2-112)表2-112易切削结构钢的化学成分牌号化学成分/%碳硅锰硫磷铅钙Y120.08~0.160.15~0.350.70~1.000.10~0.200.08~0.15——Y12Pb0.08~0.16≤0.150.70~1.100.15~0.250.050.15~0.35—Y150.10~0.18≤0.150.80~1.200.23~0.330.0...[继续阅读]
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(1)易切削结构钢的化学成分(表2-112)表2-112易切削结构钢的化学成分牌号化学成分/%碳硅锰硫磷铅钙Y120.08~0.160.15~0.350.70~1.000.10~0.200.08~0.15——Y12Pb0.08~0.16≤0.150.70~1.100.15~0.250.050.15~0.35—Y150.10~0.18≤0.150.80~1.200.23~0.330.0...[继续阅读]
耐候钢即耐大气腐蚀钢。高耐候钢是在钢中加入少量的合金元素,如铜、磷、铬、镍、钼、铌、钛、锆、钒等,使其在金属基体表面形成保护层,以提高钢材的耐候性能。这类钢的耐候性能比焊接结构用耐候钢好,所以称为高耐候性结构...[继续阅读]
(1)冷镦和冷挤压用钢的化学成分非热处理型冷镦和冷挤压用钢的化学成分见表2-118,表面硬化型冷镦和冷挤压用钢的化学成分见表2-119,调质型冷镦和冷挤压用钢(包括含硼钢)的化学成分(1)、(2)见表2-120、表2-121。表2-118非热处理型冷镦和...[继续阅读]
(1)高碳铬轴承钢的化学成分及退火后的硬度(表2-128、表2-129)表2-128高碳铬轴承钢的化学成分牌号化学成分/%碳硅锰铬GCr4GCr5GCr9GCr15SiMnGCr15SiMoGCr18Mo0.95~1.050.95~1.051.00~1.100.95~1.050.95~1.050.95~1.050.15~0.300.15~0.350.15~0.350.45~0.750.6...[继续阅读]
(1)渗碳轴承钢的化学成分(表2-131)表2-131渗碳轴承钢的化学成分牌号化学成分/%碳硅锰铬G20CrMoG20CrNiMoG20CrNi2MoG20CrNi4G10CrNi3MoG20Cr2Mn2Mo0.17~0.230.17~0.230.17~0.230.17~0.230.08~0.130.17~0.230.20~0.350.15~0.400.15~0.400.15~0.400.15~0.400.15~0.400...[继续阅读]
(1)不锈轴承钢的化学成分(表2-135)表2-135不锈轴承钢的化学成分牌号化学成分/%碳锰≤硅≤磷≤硫≤铬硅钼其他9Cr180.90~1.000.080.080.0350.03017.0~19.0≤0.30—铜≤0.259Cr18Mo0.95~1.100.080.080.0350.03016.0~18.0≤0.300.40~0.70铜≤0.251Cr18Ni9Ti①0.122...[继续阅读]
(1)碳素工具钢的化学成分(表2-138)表2-138碳素工具钢的化学成分牌号化学成分/%碳锰硅≤硫≤磷≤T7T8T8MnT9T10T11T12T13T7AT8AT8MnAT9AT10AT11AT12AT13A0.65~0.750.75~0.840.80~0.900.85~0.940.95~1.041.05~1.141.15~1.241.25~1.350.65~0.750.75~0.840.80~0.900.8...[继续阅读]
(1)合金工具钢的钢号与化学成分(表2-141)表2-141合金工具钢的钢号与化学成分牌号化学成分/%碳硅锰铬量具刃具用钢9SiCr8MnSi0.85~0.950.75~0.851.20~1.600.30~0.600.30~0.600.80~1.100.95~1.25—Cr06Cr29Cr2W1.30~1.450.95~1.100.80~0.951.05~1.25≤0.4...[继续阅读]
(1)高速工具钢的化学成分(表2-144)表2-144高速工具钢的化学成分牌号化学成分/%碳钨钼铬钒W18Cr4VW18Cr4VCo5W18Cr4V2Co8W12Cr4V5Co5W6Mo5Cr4V2CW6Mo5Cr4V2W6Mo5Cr4V3CW6Mo5Cr4V30.70~0.800.70~0.800.75~0.851.50~1.600.80~0.900.95~1.051.0~1.11.15~1.2517.5~19.017.5~...[继续阅读]