牌   号

化学成分(熔炼分析)%

优 质 碳 素 结 构 钢

20G

碳0.17~0.24,锰0.35~0.65,硅0.17~0.37,磷<0.030,硫<0.030,铜<0.20,铬,镍各<0.25,

钒<0.08,钼<0.15

20MnG

碳0.17~0.24,锰0.70~1.00,硅0.17~0.37,磷<0.030,硫<0.030,铜<0.20,铬,镍各<0.25,

钒<0.08,钼<0.15

25MnG

碳0.22~0.30,锰0.70~1.00,硅0.17~0.37,磷<0.030,硫<0.030,铜<0.20,铬,镍各<0.25,

钒<0.08,钼<0.15

合 金 结 构 钢

15MoG

碳0.12~0.20,锰0.40~0.80,硅0.17~0.37,磷<0.030,硫<0.030,铜<0.20,铬,镍各<0.30,

钼0.25~0.35

20MoG

碳0.15~0.25,锰0.40~0.80,硅0.17~0.37,磷<0.030,硫<0.030,铜<0.20,铬,镍各<0.30,

钼0.44~0.65

12CrMoG

碳0.08~0.15,锰0.40~0.70,硅0.17~0.37,磷<0.030,硫<0.030,铜<0.20,铬,镍各<0.30,

铬0.04~0.70,钼0.40~0.55

15CrMoG

碳0.12~0.18,锰0.40~0.70,硅0.17~0.37,磷<0.030,硫<0.030,铜<0.20,镍<0.30,

铬0.80~1.10,钼0.40~0.55

12Cr2MoG

碳0.08~0.15,锰0.40~0.70,硅<0.50,磷<0.030,硫<0.030,铜<0.20,镍<0.30,

铬2.00~2.50,钼0.90~1.20

12Cr1MoVG

碳0.08~0.15,锰0.40~0.70,硅0.17~0.37,磷<0.030,硫<0.030,铜<0.20,镍<0.30,

钒0.15~0.30铬0.90~1.20钼0.25~0.35

12Cr2Mo-

WVTiB

碳0.08~0.15,锰0.45~0.65,硅0.45~0.75,磷<0.030,硫<0.030,铜<0.20,镍<0.30,

钒0.28~0.42铬1.60~2.10钼0.50~0.65钛0.08~0.18,硼0.002~0.008钨0.30~0.55

12Cr3Mo-

VSiTiB

碳0.09~0.15,锰0.50~0.80,硅0.60~0.90,磷<0.030,硫<0.030,铜<0.20,镍<0.30,

钒0.25~0.35铬2.50~3.00钼1.00~1.20钛0.22~0.38,硼0.005~0.011

10Cr9Mo1-

VNb

碳0.08~0.12,锰0.30~0.60,硅0.20~0.50,磷<0.020,硫<0.010,铜<0.20,镍<0.40,

钒0.18~0.25铬8.00~9.50钼0.85~1.50铌0.60~0.10,氮0.030~0.070铝<0.040

                             不 锈 耐 热 钢

1Cr18Ni9

碳<0.15,锰<2.00,硅<1.00,磷<0.035,硫<0.030,铜<0.20,镍8.00~10.00,

铬17.00~19.00

1Cr19-

Ni11Nb

碳0.04~0.10,锰<2.00,硅<1.00,磷<0.030,硫<0.030,镍9.00~13.00,

铬17.00~20.00,铌+钽>0.80~1.00