ASTM A387 Grade 11 Class 1 Steel

A387 Grade 12 Chrome Moly steel is a boiler plate steel according to the ASTM/ASME Standard A387/A387M. A387 Grade 12 is designed for use in pressure vessels and heat exchangers where there is an elevated temperature. It is described as an alloyed high temperature pressure vessel steel.

ASTM A387 Grade 11 Class 1 Steel Dimension:

Thickness: 1.5mm -260mm;Width: 1000mm-4000mm;Length: 1000mm-18000mm

ASTM A387 Grade 12 Class 2 Steel Chemical Composition(%) :

A387 Grade 12 Class 2 Plates Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Cr

Mo

A387 Gr.12 Cl.2

0.04-0.17

0.13-0.45

0.35-0.73

0.035

0.035

0.74-1.21

0.40-0.65

Note : 1 means Heat analyse ; 2 means Product analyse.

A387 Grade 12 Class 2 steel Mechanical Properties :

Grade

A387 Grade 12 Class 2 Plates Mechanical Property

Thickness

Yield

Tensile

Elongation

A387 Gr.12 Cl.2

mm

Min Mpa

Mpa

Min  %

t≦50

275

450-585

22

50<t≦200

275

450-585

19

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