1.Application Potential:
A302/A302M specification covers manganese-molybdenum and manganese-molybdenum-nickel alloy steel plates intended particularly for welded boilers and other pressure vessels.This standard covers steel A302GrA ,A302GrB ,A302GrC and A302GrD.These plates are widely used in the fabrication of boilers and pressure vessels in industries such as shipbuilding, petrochemical and manufacturing.
2.Chemical Composition and Mechnical Property:
Chemical composition
Grade
|
Standard
|
C
|
Mn
|
S
|
P
|
Si
|
A302GrA
|
A302/A302M
|
0.20
|
0.87-1.41
|
0.035
|
0.035
|
0.13-0.45
|
A302GrB
|
A302/A302M
|
0.20
|
1.07-1.62
|
0.035
|
0.035
|
0.13-0.45
|
Mechnical Property
Grade
|
Tensile strength, ksi [MPa]
|
Yield strength, min,A ksi [MPa]
|
Elongation in 8 in. [200 mm], min, %B
|
Elongation in 2 in. [50 mm], min, %B
|
A302GrA
|
75–95
[515–655]
|
45
[310]
|
15
|
19
|
A302GrB
|
80–100
[550–690]
|
50
[345]
|
15
|
18
|
3.A302GrA,A302GrB have different minimum strength levels as 515MPa and 550MPa separately,where the main difference between them exist.For more Supplementary requirements such as S1. Vacuum Treatment,S2. Product Analysis and so on,do not hesitate to contact us,we will do our best to satisfy you.
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