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Tel : 0086-021-60880117
ASTM A738 Grade A is a kind of low Carbon, age-hardening, Ni-Cu-Cr-Mo alloy steel plates material used to fabric pressure vessels. A738 is divided into two grades or levels:A738 Grade A,A738 Grade B and A738 Grade C.
This specification ASTM A738 covers two grades of low-carbon age-hardening alloy steel plates for welded pressure vessels and piping components.
Standard: ASTM A738/A738M
Dimension range : 3mm -500mm * 1000mm-4000mm * 1000mm-18000mm
ASTM A738 Grade A steel plate/sheet Mechanical Properties :
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Mechanical Properties
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Grade |
Thickness |
Yield |
Tensile Strength |
Elongation |
Charpy V Notch Impact Test |
|
|
Degree |
Min Value |
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A738 Grade A |
mm |
Min Mpa |
Mpa |
Min % |
- |
J |
|
5≤t≤50 |
275 |
450-585 |
23% |
- |
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50≤t≤150 |
275 |
450-585 |
20% |
|
- |
|
|
Note: Impact energy for impact test is on longitudinal |
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A738 Grade A Boiler steel plate Chemical Composition :
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Chemical Composition
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A738 Grade A |
The Element Max (%) |
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|
C |
Si |
Mn |
P |
S |
Ni |
Mo |
|
|
Heat analyse |
0.07 |
0.40 |
0.40~0.70 |
0.025 |
0.025 |
0.70~1.00 |
0.15~0.25 |
|
Product analyse |
0.09 |
0.45 |
0.35~0.78 |
- |
- |
0.67~1.03 |
0.12~0.28 |
Delivery Status : Normalizing + tempering
ASTM A738 Grade A pressure vessel steel application :
A738 Grade A steel plate is mainly used in petroleum, chemical industry, power station, boiler and other industries, for the production reactor, heat exchanger, separator, spherical tank, oil tank, liquefied gas tank, nuclear reactor pressure shell, boiler drum, liquefaction Oil cylinders, high-pressure water pipe hydropower station, turbine volute and other equipment and components.
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