Standard

Grade

Chemical Composition(%)

Mechanical Properties

C

Si

Mn

P,S

Cr

Mo

Ni

Cu

V

Tensile

Strength

(MPa)

Yield Strength

(MPa)

ASTM
A53

A

≤

0.25

≥

0.10

0.27-

0.93

≤

0.035

≤

0.40

≤

0.15

≤

0.40

≤

0.40

≤

0.08

≥330

≥205

B

≤

0.30

≥

0.10

0.29-

1.06

≤

0.035

≤

0.40

≤

0.15

≤

0.40

≤

0.40

≤

0.08

≥415

≥240

C

≤

0.35

≥

0.10

0.29-

1.06

≤

0.035

≤

0.40

≤

0.15

≤

0.40

≤

0.40

≤

0.08

≥485

≥275