Grade

Tensile strength(Mpa)

Yield strength(Mpa)

Elongation(%)

The impact of power(J)

10

330~490

≥205

≥24

/

20

410~550

≥245

≥21

≥39

12CrMo

410~560

≥205

≥21

≥55

15CrMo

440~640

≥235

≥21

≥47

1Cr2Mo

≥390

≥175

≥22

≥92

1Cr5Mo

≥390

≥195

≥22

≥92

1Cr19Ni9

≥520

≥205

≥35

/

1Cr19Ni11Nb

≥520

≥205

≥35

/

Grade

C

Si

Mn

P

S

Cr

Mo

Ni

10

0.17~0.24

0.17~0.37

0.35~0.65

≤0.035

≤0.035

≤0.15

/

≤0.25

20

0.17~0.24

0.17~0.37

0.35~0.65

≤0.035

≤0.035

≤0.25

/

≤0.25

12CrMo

0.08~0.15

0.17~0.37

0.40~0.70

≤0.035

≤0.035

0.40~0.70

0.40~0.55

≤0.30

15CrMo

0.12~0.18

0.17~0.37

0.40~0.70

≤0.035

≤0.035

0.80~1.10

0.40~0.55

≤0.30

1Cr2Mo

≤0.15

0.50~1.00

0.30~0.60

≤0.035

≤0.035

2.15~2.85

0.45~0.65

/

1Cr5Mo

≤0.15

≤0.50

≤0.60

≤0.035

≤0.035

4.00~6.00

0.45~0.60

≤0.60

1Cr19Ni9

0.04~0.10

≤1.00

≤2.00

≤0.035

≤0.035

18.00~20.00

/

8.00~11.00

1Cr19Ni11Nb

0.04~0.10

≤1.00

≤2.00

≤0.035

≤0.035

17.00~20.00

/

9.00~13.00