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標準

牌號

化學成分

C

Si

Mn

P

S

Cr

Mo

Cu

Ni

GB5310

20G

0.17-0.24

0.17-0.37

0.35-0.65

≤0.030

≤0.030

/

/

≤0.20

≤0.25

/

20MnG

0.17-0.24

0.17-0.37

0.70-1.00

≤0.030

≤0.030

/

/

≤0.20

≤0.25

/

15MoG

0.12-0.18

0.17-0.37

0.40-0.80

≤0.030

≤0.030

/

0.25-0.35

≤0.20

≤0.30

/

15CrMoG

0.12-0.18

0.17-0.37

0.40-0.70

≤0.030

≤0.030

0.80-1.10

0.40-0.55

≤0.20

≤0.30

/

12Cr2MoG

0.08-0.15

≤0.50

0.40-0.70

≤0.030

≤0.030

2.00-2.50

0.90-1.20

≤0.20

≤0.30

/

12Cr1MoVG

0.08-0.15

0.17-0.37

0.40-0.70

≤0.030

≤0.030

0.90-1.20

0.25-0.35

≤0.20

≤0.30

0.15-0.35