C

Mn

Si

P

S

Cr

Ni

Mo

V

Al

Cu

其它

TGF80S-B6

≤0.10

0.40-0.70

≤0.50

≤0.025

≤0.025

4.50-6.00

≤0.60

0.40-0.65

—

—

≤0.35

≤0.50

TGF90S-B9

0.07-0.13

≤1.20

0.15-0.50

≤0.010

≤0.010

8.00-10.50

≤0.80

0.85-1.20

0.15-0.30

≤0.04

≤0.20

總和≤0.50  Mn+Ni≤1.5
Cu≤0.25  Al≤0.04

Nb:0.03-0.10  N:0.02-0.07