ASTM A387 Grade 12 Class2 is a high quality chrome molybdenum steel which is ideal for elevated temperature service and offers excellent anti corrosion characteristics. A387 Grade 12 Class2 has a wide range of uses including industrial boilers and pressure vessels, especially in environments where high temperature levels are common.
A387 Gr.12 CL.2Chemical 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
|
Mechanical Property of A387 Grade 12 Class2
Grade
|
A387 Gr.12 CL.2
| |||
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
| |
ASTM A387
|
Grade
|
Grade
|
A387Gr12cl1
|
A387Gr12cl2
|
A387Gr11cl1
|
A387Gr11cl2
|
A387Gr22cl2
|
A387Gr22cl1
|
A387Gr22L
|
A387Gr21cl2
|
A387Gr21cl1
|
A387Gr21L
|
A387Gr5cl1
|
A387Gr5cl2
|
A387Gr9cl1
|
A387Gr9cl2
|
A387Gr91
|
A387Gr911
|
A387Gr2cl1
|
A387Gr2cl2
|
A387 Grade 12 Class2 Technical Requirements
1, Vacuum treatment
2, Product Analysis
3, Additional Tension Test
4, Charpy V-Notch Impact Test
5, Drop Weight Test
6, High Temperature Tension Test
7, Ultrasonic Examination
8, Magnetic Particle Examination
2, Product Analysis
3, Additional Tension Test
4, Charpy V-Notch Impact Test
5, Drop Weight Test
6, High Temperature Tension Test
7, Ultrasonic Examination
8, Magnetic Particle Examination
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