Chemical and mechanical properties:

Chemical composition and mechanical properties of seamless carbon steel pipes according:

ASTM A-106 and ASTM A-53 Grade B

Chemical composition, %, no more

C

Mn

Si

P

S

Cr

0.17- 0.24

0.35- 0.65

0.17- 0.37

0.035

0.040

0.25

Mechanical properties of seamless carbon steel pipes, no less than

Tensile strength, MPa

Yield strength, MPa

Elongation, %

412

245

21

API-5L

Standard

Steel

Grade

Chemical composition, %

Tensile strength,

MPa

Yield strength, MPa

Elongation, %

C

Mn

P

S

MAX

MIN

API-5L

B

0.27

1.15

0.03

0.03

413

241

21.5-29.5
 

X42

0.29

1.25

0.03

0.03

413

289

21.5-29.5
 

X46

0.31

1.35

0.03

0.03

434

317

20.5-28.5
 

X52

0.31

1.35

0.03

0.03

455

358

19.5-27
 

X56

0.26

1.35

0.03

0.03

489

386

18.5-25.5
 

X60

0.26

1.35

0.03

0.03

517

413

17.5-24

Chemical composition and mechanical properties of seamless

carbon steel pipes according DIN:

Boiler pipes St.20 K

Chemical composition %, no more

C

Mn

Si

P

S

Cr

Cu

Ni

0.17- 0.24

0.35- 0.65

0.17- 0.37

0.030

0.025

0.25

0.3

0.25

Mechanical properties of seamless carbon steel pipes, no less than

Tensile strength, MPa

Yield strength, MPa

Elongation, %

431-549

215

25

Boiler pipes 12Cr1MoV

Chemical composition, %, no more

C

Mn

Si

P

S

Cr

Cu

Ni

Mo

V

0.08- 0.15

0.4- 0.7

0.17- 0.37

0.025

0.025

0.9-1.2

0.2

0.25

0.25-0.35

0.15-0.30

     Mechanical   properties   of   seamless   carbon steel pipes, no less than      

Tensile strength, MPa

Yield strength, MPa

Elongation, %

441-588

274-431

21