ASTM A737 Grade B application:
ASTM A737 Grade B is a kind of high strength low alloy steel plates material used to fabric pressure vessels.ASTM A737 is divided into two grades or levels :A737 Grade B and A737 Grade C.
Key words:A737 Grade B,ASTM A737 Grade B,A737 Grade B high strength low alloy steel plates,A737 Grade B for fabric pressure vessels.
ASTM A737 Grade B steel chemical composition :
|
Composition |
Type |
A737 Grade B |
|
C ≤ |
Heat analyse |
0.20 |
|
Product analyse |
0.22 |
|
|
Mn |
Heat analyse |
1.15~1.50 |
|
Product analyse |
1.07~1.62 |
|
|
P ≤ |
Heat analyse Product analyse |
0.035 |
|
S ≤ |
||
|
Si ≤ |
Heat analyse |
1.15~1.50 |
|
Product analyse |
1.15~1.55 |
|
|
V |
Heat analyse |
- |
|
Product analyse |
- |
|
|
Nb ≤ |
Heat analyse |
0.05 |
|
Product analyse |
0.05 |
|
|
N |
Heat analyse |
- |
|
Product analyse |
- |
ASTM A737 Grade B abstract :
This specification covers high-strength low-alloy steel plates for service in welded pressure vessels and piping components. This material is particularly intended for piping and pressure vessel applications where high strength and improved toughness are required. Two grades, designated B and C, are covered. The steel shall be killed and shall conform to the fine austenitic grain size requirements specified. The material shall be normalized by heating to a suitable temperature which produces an austenitic structure holding a sufficient time to attain uniform heat throughout the material, and cooling in air. The steel shall conform to the requirements as to chemical compositions specified. The material as represented by the tension test specimen shall conform to the requirements specified.
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Related link :ASTM A736 Grade C, ASTM A736
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