A572 steel has five different grades: 42, 50, 55, 60 and 65.[2] Each of these grades differ in their mechanical properties and chemical composition.
| A572 Grade | Carbon | Manganese | Phosphorus | Sulfur | Silicon |
|---|---|---|---|---|---|
| Grade 42 | 0.21% | 1.35% | 0.030% | 0.030% | 0.15-0.40% |
| Grade 50 | 0.23% | 1.35% | 0.030% | 0.030% | 0.15-0.40% |
| Grade 55 | 0.25% | 1.35% | 0.030% | 0.030% | 0.15-0.40% |
| Grade 60 | 0.26% | 1.35% | 0.030% | 0.030% | 0.40% |
| Grade 65 Less Than 1/2" Thick | 0.26% | 1.35% | 0.030% | 0.030% | 0.40% |
| Grade 65 Over 1/2" to 1 1/4" Thick | 0.23% | 1.65% | 0.030% | 0.030% | 0.40% |
| A572 Grade | Yield Point (KSI) [MPa] | Tensile Strength (KSI) [MPa] | Min. 8" Elongation % |
|---|---|---|---|
| Grade 42 | 42 [290] | 60 [414] | 20 |
| Grade 50 | 50 [345] | 65 [448] | 18 |
| Grade 55 | 55 [379] | 70 [483] | 17 |
| Grade 60 | 60 [414] | 75 [517] | 16 |
| Grade 65 | 65 [448] | 80 [552] | 15 |
Forms
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A572 steel is produced in a variety of different steel forms,[2] which include:
Plates [3]
Bars
Structural Shapes
Channels
I-Beams
Angles
Wide Flange Beams
Sheet Piling
Applications
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A572 steel is typically used in structural applications due to its high strength, ductility, weldability and corrosion resistance.[4] These applications include structural sections, reinforcing bars, bridges, skyscrapers and houses.
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