ASTM A36 steel has a carbon content of only .26 percent, classifying it as a low-carbon steel. Other elements in the alloy include manganese (.75 percent), sulfur (less than .05 percent) and phosphorous (less than .04 percent). A572 Grade 50 steel plate is for high strength low alloy structural steel, normalised rolled steel.
Both ASTM A36 carbon steel and ASTM A572 grade 50 are iron alloys. Both are furnished in the as-fabricated (no temper or treatment) condition. They have a very high 99% of their average alloy composition in common.
ASTM A36 Vs A572 Grade 50 Chemical Composition(%)
|
Grades |
C |
Si |
Mn |
P |
S |
Nb |
Cu |
|
ASTM A36 |
0.25 - 0.290 |
≤0.280 |
≤1.03 |
≤0.04 |
≤0.05 |
- |
≤0.20 |
|
A572Gr50 |
≤0.20 |
≤0.40 |
≤1.50 |
≤0.04 |
≤0.05 |
0.005～0.05 |
- |
|
ASTM A36 Vs A572 Grade 50 Steel Mechanical Properties |
||||
|
Grade |
σs，MPa |
σb，MPa |
δ200，% |
0℃Akv，J |
|
ASTM A36 |
≥250 |
≥400 |
≥20 |
≥23 |
|
A572Gr50 |
≥345 |
≥450 |
≥18 |
≥34 |
ASTM A36 Vs A572 Grade 50 Steel in Application
The poor high-temperature performance of A36 means it is a poor choice for structural applications where fire or high heat are a possibility, such as very large buildings.
A572 Grade 50 high strength low alloy structural steel is widely used in engineering structures, such as the construction of steel structures, construction machinery, mining machinery, heavy-duty trucks, bridges, pressure vessels, especially for good weldability and toughness of the architectural and engineering mechanical components.
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