ASTM A633 Grade A is a kind of normalized high-strength low-alloy structural steel plates for welded, riveted, or bolted construction. ASTM A633 Grade A is particularly suited for service at low ambient temperatures of −50°F [−45°C] and higher where notch toughness better than that expected in as-rolled material of a comparable strength level is desired.
ASTM A633 Grade A chemical composition
|
C |
Si |
Mn |
P |
S |
|
≤0.18 |
0.15-0.50 |
1.00-1.35 |
≤0.035 |
≤0.04 |
ASTM A633 Grade A mechanical properties
|
Yield Strength Mpa |
Tensile Strength Mpa |
Elongation in 2 in. % |
|
≧290 |
430-570 |
≧23 |
ASTM A633 Grade A is mainly used to manufacture all kinds of high strength engineering structures, such as bridges, ships, vehicles, high pressure vessels, oil and gas pipelines, large steel structures. ASTM A633 Grade A could have high strength without the complex processing process, even does not need the heat treatment. This could reduce the weight of engineering structure greatly, thus can reduce cost and increase efficiency.
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