C

Mn

P

S

Si

V

Grade F

0.45-0.59

0.70-1.00

≤0.045

≤ 0.050

≥0.15

0.02-0.08

Grade H

-

0.60-0.90

≤0.045

≤ 0.050

≥0.15

-

Heat Method

Size

in

T.S.
(psi )

Y.S.

(psi)

El

   δ %

R.A

ψ%

Grade F

(Double Normalized and Tempered)

≤8

≥88000

≥50000

≥20

≥35

Grade H

Normalized

≤7

≥115000

≥75000

≥16

≥35

Tempered

7-10

≥105000

≥65000

≥18

≥35