Is A500 structural tube a mild steel
Yes, ASTM A500 structural pipe is a type of low-carbon steel. According to the ASTM A500-18 standard, all grades (Gr.A, Gr.B, Gr.C, Gr.D) have a carbon content of ≤0.27%, which is lower than the conventional upper limit for low-carbon steel (usually ≤0.30%), while emphasizing high strength and weldability.
A500 is a type of carbon structural steel in the American ASTM standard, primarily used for manufacturing cold-formed welded structural components. It is characterized by moderate strength, good weldability, and also possesses good plasticity and toughness. Depending on the grade (e.g., Gr.A, Gr.B, Gr.C, etc.), its yield strength and tensile strength will vary.
A500 Property
| Property | Gr.A | Gr.B | Gr.C | Gr.D |
|---|---|---|---|---|
| Chemical (wt%) | ||||
| Carbon (C) | ≤ 0.26% | ≤ 0.26% | ≤ 0.23% | ≤ 0.27% |
| Manganese (Mn) | ≤ 1.35% | ≤ 1.35% | ≤ 1.35% | ≤ 1.35% |
| Phosphorus (P) | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% |
| Sulfur (S) | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% | ≤ 0.035% |
| Copper (Cu) | ≥ 0.20% (when spec) | ≥ 0.20% (when spec) | ≥ 0.20% (when spec) | ≥ 0.20% (when spec) |
| Mechanical | ||||
| Min Yield Strength | ≥ 330 MPa (48 ksi) | ≥ 350 MPa (50 ksi) | ≥ 400 MPa (58 ksi) | ≥ 360 MPa (52 ksi) |
| Min Tensile Strength | ≥ 400 MPa (58 ksi) | ≥ 450 MPa (65 ksi) | ≥ 480 MPa (70 ksi) | ≥ 500 MPa (72 ksi) |
| Elongation (50mm) | ≥ 25% | ≥ 23% | ≥ 21% | ≥ 20% |
A500 Structural Tube Factory
