Steel grade

Heat-tr

eatment
Tempe

rature

HRC

Chermical composition

GB

AISI

DIN

JIS

C

Mn

P≦

S≦

Si

Cr

V

W

Mo

Co

W2Mo9Cr4
VCo8

M42

1.3247

SKH-59

1160-

1200

65-68

1.05-1.15

0.15-0.40

≦0.030

≦0.030

0.15-0.65

3.50-4.25

0.95-1.35

1.15-1.85

9.0-10.0

7.75-8.75

W6Mo5Cr4V
2Co5

M35

1.3243

SKH55

1160-

1220

64-67

0.87-0.95

0.45-0.40

≦0.030

≦0.030

0.20-0.45

3.80-4.50

1.70-2.10

5.90-6.70

4.70-5.20

4.50-5.00

W6Mo5Cr4v2

M2

1.3343

SKH51

1160-

1220

63-66

0.80-0.90

0.15-0.40

≦0.030

≦0.030

0.20-0.45

3.80-4.40

1.75-2.20

5.50-6.75

4.50-5.50

--

W3Mo2Cr4V
Si

--

--

1100

-1150

62-66

0.80-0.90

0.30-0.40

≦0.030

≦0.030

0.86-0.95

4.10-4.40

1.60-1.75

3.10-3.35

1.70-1.95

--

Cr12MoV

D2

X16Cr
MoV12

SKD11

950-

1050

58-62

1.45-1.70

≦0.40

≦0.030

≦0.030

≦0.40

11.00-12.50

0.15-0.30

--

0.40-0.60

≦1.00

W4Mo3Cr4V
Si

--

--

--

1170

-1190

≧63

0.83-0.93

0.20-0.40

≦0.030

≦0.030

0.70-1.00

3.8-4.40

1.20-1.80

3.50-4.50

2.50-3.50

--

GCr15

--

100Grb

SUJ20

--

≧60

0.95-1.05

0.25-0.45

≦0.025

≦0.025

0.15-0.35

1.40-1.65

--

--

≦0

.10

--