Mechanical Properties

Models of steel pipes

Tensile strength(MPa)

Yield strength(MPa)

Elongation(%)

20

390min

245min

20min

45

590min

335min

14min

16Mn(Q345B)

490min

325min

21min

Models of steel pipes

Chemical Component

C

Si

Mn

P

S

Cu

Ni

Cr

20

0.17~0.24

0.17~0.37

0.35~0.65

0.035max

0.035max

0.25max

0.25max

0.25max

45

0.42~0.50

0.17~0.37

0.50~0.80

0.035max

0.035max

0.25max

0.25max

0.25max

16Mn(Q345B)

0.12~0.20

0.20~0.55

1.20~1.60

0.035max

0.035max

0.25max

0.25max

0.25max