(1)易切削結(jié)構(gòu)鋼的化學成分(表2-112)表2-112易切削結(jié)構(gòu)鋼的化學成分牌號化學成分/%碳硅錳硫磷鉛鈣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...[繼續(xù)閱讀]

    耐候鋼即耐大氣腐蝕鋼。高耐候鋼是在鋼中加入少量的合金元素,如銅、磷、鉻、鎳、鉬、鈮、鈦、鋯、釩等,使其在金屬基體表面形成保護層,以提高鋼材的耐候性能。這類鋼的耐候性能比焊接結(jié)構(gòu)用耐候鋼好,所以稱為高耐候性結(jié)構(gòu)...[繼續(xù)閱讀]

    (1)冷鐓和冷擠壓用鋼的化學成分非熱處理型冷鐓和冷擠壓用鋼的化學成分見表2-118,表面硬化型冷鐓和冷擠壓用鋼的化學成分見表2-119,調(diào)質(zhì)型冷鐓和冷擠壓用鋼(包括含硼鋼)的化學成分(1)、(2)見表2-120、表2-121。表2-118非熱處理型冷鐓和...[繼續(xù)閱讀]

    (1)高碳鉻軸承鋼的化學成分及退火后的硬度(表2-128、表2-129)表2-128高碳鉻軸承鋼的化學成分牌號化學成分/%碳硅錳鉻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...[繼續(xù)閱讀]

    (1)滲碳軸承鋼的化學成分(表2-131)表2-131滲碳軸承鋼的化學成分牌號化學成分/%碳硅錳鉻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...[繼續(xù)閱讀]

    (1)不銹軸承鋼的化學成分(表2-135)表2-135不銹軸承鋼的化學成分牌號化學成分/%碳錳≤硅≤磷≤硫≤鉻硅鉬其他9Cr180.90～1.000.080.080.0350.03017.0～19.0≤0.30—銅≤0.259Cr18Mo0.95～1.100.080.080.0350.03016.0～18.0≤0.300.40～0.70銅≤0.251Cr18Ni9Ti①0.122...[繼續(xù)閱讀]

    (1)碳素工具鋼的化學成分(表2-138)表2-138碳素工具鋼的化學成分牌號化學成分/%碳錳硅≤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...[繼續(xù)閱讀]

    (1)合金工具鋼的鋼號與化學成分(表2-141)表2-141合金工具鋼的鋼號與化學成分牌號化學成分/%碳硅錳鉻量具刃具用鋼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...[繼續(xù)閱讀]

    (1)高速工具鋼的化學成分(表2-144)表2-144高速工具鋼的化學成分牌號化學成分/%碳鎢鉬鉻釩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～...[繼續(xù)閱讀]

    (1)冷作模具鋼的化學成分(表2-147)表2-147冷作模具鋼的化學成分牌號碳硅錳鉻鉬高碳低合金冷作模具鋼(GB/T1299—2000)9Mn2V0.85～0.95≤0.401.70～2.00——9SiCr9CrWMnCrWMnCr20.85～0.950.85～0.950.90～1.050.95～1.101.20～1.60≤0.400.15～0.35≤0.400.30～0.600....[繼續(xù)閱讀]