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ASTMA387Grade12Class1

ASTM A387 Grade 12 is in the standard ASTM A-387. A387 Grade 12 is a kind of Cr-Mo-alloy steel material used to fabric high temperature pressure vessels. Because of the good mech For pressure vessel steel plate SA387 Grade 12 CL 1, the tensile strength shall be within 380 to 550, minimum yield strength is 230 Mpa.anical property, A387GR12 is widely used in the high temperature vessels industry.

ASTM A387 Grade 11 Class 1 Steel Dimension:

Thickness: 6mm -300mm;Width: 1500mm-4000mm;Length: 3000mm-15000mm

Material ASTM A387 Grade 12 Class 1 Plates Chemical Composition

Material ASTM A387 Grade 12 Class 1 Plates Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Cr

Mo

A387 Gr.12 Cl.1

0.04-0.17

0.13-0.45

0.35-0.73

0.035

0.035

0.74-1.21

0.40-0.65

Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】% 

Material ASTM A387 Grade 12 Class 1 Plates Mechanical Properties

Grade

Material ASTM A387 Grade 12 Class 1 Plates Mechanical Property

Thickness

Yield

Tensile

Elongation

A387 Gr.12 Cl.1

mm

Min Mpa

Mpa

Min  %

t≦50

230

380-550

22

50<t≦200

-

-

18

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