C(%)

V(%)

Si(%)

Mn(%)

P(%)

S(%)

Cr(%)

W(%)

Ni(%)

Cu(%)

Mo(%)

   Sanyo QHZ

Matrix-type, not disclosed

   Sanyo QH51

0.85

1.90

≦0.4

≦0.4

≦0.03

≦0.01

4.15

6.10

-

-

5.00

    SKH2

0.73-0.83

1-1.2

≦0.4

≦0.4

≦0.03

≦0.03

3.8-4.5

17-18.7

≦0.25

≦0.25

-

    SKH51

0.80-0.88

1.7-2.1

≦0.45

≦0.4

≦0.03

≦0.03

3.8-4.5

5.9-6.7

-

-

4.7-5.2

    SKH55

0.85-0.95

1.7-2.1

≦0.45

≦0.4

≦0.03

≦0.03

3.8-4.5

5.9-6.7

-

-

4.7-5.2