(1)易切削結(jié)構(gòu)鋼的化學(xué)成分(表2-112)表2-112易切削結(jié)構(gòu)鋼的化學(xué)成分牌號(hào)化學(xué)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(hù)層,以提高鋼材的耐候性能。這類(lèi)鋼的耐候性能比焊接結(jié)構(gòu)用耐候鋼好,所以稱(chēng)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(xué)成分非熱處理型冷鐓和冷擠壓用鋼的化學(xué)成分見(jiàn)表2-118,表面硬化型冷鐓和冷擠壓用鋼的化學(xué)成分見(jiàn)表2-119,調(diào)質(zhì)型冷鐓和冷擠壓用鋼(包括含硼鋼)的化學(xué)成分(1)、(2)見(jiàn)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(xué)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(xué)成分牌號(hào)化學(xué)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(xué)成分(表2-131)表2-131滲碳軸承鋼的化學(xué)成分牌號(hào)化學(xué)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(xué)成分(表2-135)表2-135不銹軸承鋼的化學(xué)成分牌號(hào)化學(xué)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(xué)成分(表2-138)表2-138碳素工具鋼的化學(xué)成分牌號(hào)化學(xué)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(hào)與化學(xué)成分(表2-141)表2-141合金工具鋼的鋼號(hào)與化學(xué)成分牌號(hào)化學(xué)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(xué)成分(表2-144)表2-144高速工具鋼的化學(xué)成分牌號(hào)化學(xué)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(xué)成分(表2-147)表2-147冷作模具鋼的化學(xué)成分牌號(hào)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]