Standard

Grade

Tensile Strength(MPa)

Yield Strength(MPa)

Elongation(%)

Impact power(J)

GB3087

10

335~475

≥195

≥24

20

410~550

≥245

≥20

GB5310

20G

410~550

≥245

≥24

≥35

GB/T8162

10

335

185~205

24

20

390

225~245

20

35

510

285~305

17

45

590

315~335

14

Q345

490

305~325

21

GB/T8163

10

335~475

195~205

24

20

410~550

235~245

20

Q295

430~610

285~295

22

Q345

490~665

315~325

21

ASME SA106

SA106B

≥415

≥240

≥22

≥35

SA106C

≥485

≥275

≥20

≥35

ASTM A106

A106 Gr.A

≥330

≥205

35 Longitudinal

25 Transverse

A106 Gr.B

≥415

≥240

30 Longitudinal

16.5 Transverse

A106 Gr.C

≥485

≥275

30 Longitudinal

16.5 Transverse

Standard

Grade

Chemical Composition(%)

C

Si

Mn

P 

  S

GB3087

10

0.07~0.13

0.17~0.37

0.38~0.65

≤0.030

≤0.030

20

0.17~0.23

0.17~0.37

0.38~0.65

≤0.030

≤0.030

GB5310

20G

0.17~0.24

0.17~0.37

0.35~0.65

≤0.030

≤0.030

ASME SA106

SA106B

0.17~0.25

≥0.1

0.70~1.00

≤0.030

≤0.030

ASTM A106

A106 Gr.A

≤0.25

≤0.10

0.27~0.93

≤0.035

≤0.035

A106 Gr.B

≤0.30

≤0.10

0.29~1.06

≤0.035

≤0.035

A106 Gr.C

≤0.35

≤0.10

0.29~1.06

≤0.035

≤0.035

Standard

Grade

Chemical Composition(%)

Cr

Mo

Cu

Ni

V

GB3087

10

0.3~0.65

/

≤0.25

≤0.30

/

20

0.3~0.65

/

≤0.25

≤0.30

/

GB5310

20G

≤0.25

≤0.15

≤0.20

≤0.25

≤0.08

ASME SA106

SA106B

≤0.035

ASTM A106

A106 Gr.A

≤0.40

≤0.15

≤0.40

≤0.40

≤0.08

A106 Gr.B

≤0.40

≤0.15

≤0.40

≤0.40

≤0.08

A106 Gr.C

≤0.40

≤0.15

≤0.40

≤0.40

≤0.08