
ASTM A572 heavy steel plate is used in a variety of structural applications including bridges, buildings, construction equipment, freight cars, machinery, truck parts and transmission towers.
A572 heavy steel plate is produced in five grades as listed below.
| A572 Steel Composition | ||||
|---|---|---|---|---|
| Grade 42 | Grade 50 | Grade 60 | Grade 65 | |
| Carbon | 0.21% | 0.23% | 0.26% | 0.23-0.26% |
| Manganese | 1.35% | 1.35% | 1.35% | 1.35-1.65% |
| Phosphorus | 0.03% | 0.03% | 0.03% | 0.03% |
| Sulfur | 0.03% | 0.03% | 0.03% | 0.03% |
| Silicon | 0.15-0.4% | 0.15-0.4% | 0.4% | 0.4% |
The maximum stress points of A572 steel differ by grade.
| A572 Steel Strength | |||
|---|---|---|---|
| Grade | Yield Point (ksi) | Tensile Strength (ksi) | Min. 8" Elongation % |
| 42 | 42 | 60 | 20 |
| 50 | 50 | 65 | 18 |
| 60 | 60 | 75 | 16 |
| 65 | 65 | 80 | 15 |
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