常用材质化学成分

牌号

C

Si

Mn P S

Alt

Cr Mo

抗拉强度不大于/Mpa 断面收缩率不小于/%

使用标准

ML04Al ≤0.06≤0.100.20-0.40≤0.035≤0.035≥0.02044060GB/T 6478-2001ML08Al 0.05-0.10≤0.100.30-0.60≤0.035≤0.035≥0.02047060GB/T 6478-2001ML10Al 0.08-0.13≤0.100.30-0.60≤0.035≤0.035≥0.02049055GB/T 6478-2001ML15Al 0.13-0.18

≤0.10

0.30-0.60≤0.035

≤0.035≥0.020

53050GB/T 6478-2001ML150.13-0.180.15-0.350.30-0.60≤0.035≤0.035530

50GB/T 6478-2001ML20Al 0.18-0.23

≤0.10

0.30-0.60≤0.035

≤0.035≥0.02058045GB/T 6478-2001ML20

0.18-0.230.15-0.350.30-0.60≤0.035

≤0.035

580

45

GB/T 6478-2001

ML18Mn 0.15-0.20≤0.100.60-0.90≤0.030≤0.035≥0.020GB/T 6478-2001ML22Mn 0.18-0.23≤0.100.70-1.00≤0.030≤0.035≥0.020GB/T 6478-2001ML20Cr

0.17-0.23

≤0.30

0.60-0.90≤0.035

≤0.035

≥0.020

0.90-1.20

GB/T 6478-2001GB/T 6478-2001ML250.22-0.29≤0.200.30-0.60≤0.035≤0.035GB/T 6478-2001ML300.27-0.34≤0.200.30-0.60≤0.035≤0.035GB/T 6478-2001ML350.32-0.39≤0.200.30-0.60≤0.035≤0.035GB/T 6478-2001ML400.37-0.44≤0.200.30-0.60≤0.035≤0.035GB/T 6478-2001ML450.42-0.50

≤0.20

0.30-0.60≤0.035

≤0.035GB/T 6478-2001ML15Mn 0.14-0.200.20-0.401.20-1.60≤0.035≤0.035GB/T 6478-2001ML25Mn 0.22-0.29≤0.250.60-0.90≤0.035≤0.035GB/T 6478-2001ML30Mn 0.27-0.34≤0.250.60-0.90≤0.035≤0.035GB/T 6478-2001ML35Mn 0.32-0.39≤0.250.60-0.90≤0.035≤0.035GB/T 6478-2001

ML37Cr 0.34-0.41≤0.300.60-0.90≤0.035≤0.0350.90-1.20GB/T 6478-2001ML40Cr

0.38-0.45

≤0.30

0.60-0.90≤0.035

≤0.035

0.90-1.20

GB/T 6478-2001

以上表示硬化型冷镦和冷挤压用钢

以上表示非热处理冷镦和冷挤压用钢，Al镇静钢中Si≤0.17

ML表示

冷镦和冷挤压用钢

ML30CrMo0.26-0.34≤0.300.60-0.90≤0.035≤0.0350.80-1.100.15-0.25GB/T 6478-2001 ML35CrMo0.32-0.40≤0.300.60-0.90≤0.035≤0.0350.80-1.100.15-0.25GB/T 6478-2001 ML42CrMo0.38-0.45≤0.300.60-0.90≤0.035≤0.0350.90-1.200.15-0.25GB/T 6478-2001 ML20B0.17-0.24≤0.400.50-0.80≤0.035≤0.035≥0.020B:0.0005-0.0035GB/T 6478-2001 ML28B0.25-0.32≤0.400.60-0.90≤0.035≤0.035≥0.020B:0.0005-0.0035GB/T 6478-2001 ML35B0.32-0.39≤0.400.60-0.80≤0.035≤0.035≥0.020B:0.0005-0.0035GB/T 6478-2001 ML15MnB0.14-0.20≤0.30 1.20-1.60≤0.035≤0.035≥0.020B:0.0005-0.0035GB/T 6478-2001 ML20MnB0.17-0.24≤0.400.80-1.20≤0.035≤0.035≥0.020B:0.0005-0.0035GB/T 6478-2001 ML35MnB0.32-0.39≤0.40 1.10-1.40≤0.035≤0.035≥0.020B:0.0005-0.0035GB/T 6478-2001 ML37CrB0.34-0.41≤0.400.50-0.80≤0.035≤0.035≥0.0200.20-0.40B:0.0005-0.0035GB/T 6478-2001 ML20MnTiB0.19-0.24≤0.30 1.30-1.60≤0.035≤0.035≥0.020Ti:0.04-0.10B:0.0005-0.0035GB/T 6478-2001 ML15MnVB0.13-0.18≤0.30 1.20-1.60≤0.035≤0.035≥0.020V:0.07-0.12B:0.0005-0.0035GB/T 6478-2001 ML20MnVB0.19-0.24≤0.30 1.20-1.60≤0.035≤0.035≥0.020V:0.07-0.12B:0.0005-0.0035GB/T 6478-2001以上表示调质型冷镦和冷挤压用钢（包括含硼）,根据需方要求ML15MnB中C可为0.12-0.18

C Si Mn P S Cr Mo

SWRM8≤0.10≤0.60≤0.045≤0.045JIS G 3505 SWRCH8A≤0.10≤0.10≤0.60≤0.035≤0.03JIS G 3507 SWRM100.08-0.130.30-0.60≤0.045≤0.045JIS G 3505 SWRCH10A0.08-0.13≤0.100.30-0.60≤0.035≤0.03JIS G 3507 SWRCH15A0.13-0.18≤0.100.30-0.60≤0.035≤0.03JIS G 3507 SWRCH18A0.15-0.20≤0.100.60-0.90≤0.035≤0.03JIS G 3507 SWRCH22A0.18-0.23≤0.100.70-1.00≤0.035≤0.03JIS G 3507 SWRCH15K0.13-0.180.10-0.350.30-0.60≤0.035≤0.03JIS G 3507 SWRCH35K0.32-0.380.10-0.350.60-0.90≤0.035≤0.03JIS G 3507

SWRCH40K0.37-0.430.10-0.350.60-0.90≤0.035≤0.03JIS G 3507 SWRCH45K0.42-0.480.10-0.350.60-0.90≤0.035≤0.03JIS G 3507 SCM4350.33-0.380.15-0.350.60-0.85≤0.03≤0.030.90-1.200.15-0.30Ni≤0.25,Cu≤0.30JIS G 4105 SCM4400.38-0.430.15-0.350.60-0.85≤0.03≤0.030.90-1.200.15-0.30Ni≤0.25,Cu≤0.30JIS G 4105 SCr4400.38-0.430.15-0.350.60-0.85≤0.03≤0.030.90-1.20Ni≤0.25,Cu≤0.30JIS G 4105 150.12-0.190.17-0.370.35-0.65≤0.035≤0.035GB 699-88 200.17-0.240.17-0.370.35-0.650.035≤0.035退火≥390GB 699-88 350.32-0.400.17-0.370.50-0.800.035≤0.035GB 699-88 450.42-0.500.17-0.370.50-0.80≤0.035≤0.035GB 699-88 15CrMo0.12-0.180.17-0.370.40-0.700.80-1.100.40-0.55Ni≤0.30GB3077-88 42CrMo0.38-0.440.15-0.350.60-0.85≤0.03≤0.030.90-1.200.15-0.30Ni≤0.25,Cu≤0.30GB3077-88 10B210.18-0.23≤0.100.70-1.00≤0.03≤0.04B:0.0005-0.0035

15B25M0.22~0.28≤0.350.90~1.200.020.02≤0.4Ni≤0.25 Cu:≤0.30B:0.0005-0.0035ES-X50924C SPHC0.150.60.050.05JIS.G3131 SPCC0.120.50.0450.04JIS.G3141 Q1950.06~0.12≤0.30.25~0.50≤0.05≤0.045GB700-88 Q215A0.09~0.15≤0.30.25~0.55≤0.05≤0.045GB700-88 Q235A0.14~0.22≤0.30.30~0.65≤0.05≤0.045GB700-88 35~450.32~0.500.17~0.370.5~0.8≤0.035≤0.035GB699-88 500.47~0.550.17~0.370.50~0.80≤0.035≤0.035GB699-88 65Mn0.62~0.700.17~0.370.90~1.20≤0.035≤0.035GB699-88 SK50.80~0.90<0.35<0.5≤0.03≤0.035JIS.G4802 T8A0.75~0.84 ≤0.35≤0.4≤0.030.035GB1298-86 T90.85~0.940.350.40.030.035GB1298-86

C450.42~0.500.40.50~0.800.0450.045DIN17200

70#0.67~0.750.17~0.370.50~0.800.0350.035GB699-88

SWRH62~67A0.59~0.710.15~0.350.30~0.60.030.03JIS.G3506 St12≤0.1≤0.500.0250.035Q/BQB　403 6.16539 08F0.05~0.110.030.25~0.500.0350.035GB699-88

1Cr17Ni70.15120.030.035Ni6.0-8.0Cr:16-18GB122C

0Cr19Ni9Cu3≤0.08≤1.0≤2.0≤0.035≤0.030Ni8.0-10.5Cr:17.0-19.0Cu:3.0-4.0≥480,≥177≥40GB1220-92

60Si2Mn0.56-0.64 1.5-2.00.6-0.90.0350.035Cr≤0.035Ni≤0.035GB1222