C(%)

Si(%)

Mn(%)

P(%)

S(%)

Cr(%)

Mo(%)

   P1 (SC series)

0.52-0.60

0.20-0.35

0.6-0.9

≦0.04

≦0.05

-

-

   P3 (SCM series)

0.40-0.50

≦0.35

≦1.00

-

-

1.00-1.50

0.20-0.40

   P20 (SNCM series)

0.25-0.35

-

0.95-1.15

-

-

2.00-3.00

0.30-0.50