1. Chemical Composition Comparison
| Element | ASTM A252 (Gr.3) | ASTM A53 (Grade B) |
|---|---|---|
| Carbon (C) | ≤0.26% | ≤0.30% |
| Manganese (Mn) | ≤1.20% | ≤1.20% |
| Phosphorus (P) | ≤0.05% | ≤0.035% |
| Sulfur (S) | ≤0.05% | ≤0.035% |
2. Mechanical Properties Comparison
| Parameter | ASTM A252 (Gr.3) | ASTM A53 (Grade B) |
|---|---|---|
| Yield Strength | ≥241 MPa | ≥240 MPa |
| Tensile Strength | ≥455 MPa | ≥415 MPa |
| Elongation | ≥20% | ≥24% |
3. Mechanical Performance Comparison
| Characteristic | ASTM A252 | ASTM A53 |
|---|---|---|
| Straightness Requirement | ≤0.25% length | No special requirement |
| Testing Standard | 100% weld inspection | 100% hydrostatic test |
| Temperature Range | -20℃~+50℃ | -30℃~+80℃ |
4. Application Differences
ASTM A252: Pile foundation engineering, excavation support, port structures
ASTM A53: Fluid transportation pipelines, building structural support, machinery manufacturing
A252 welded and seamless steel pipe piles factory
