A36
ASTM A36 – Standard Structural Carbon Steel for Construction and Fabrication
ASTM A36 is the most commonly used structural steel in North America, forming the backbone of construction, infrastructure, and fabricated steel structures. Its guaranteed minimum yield strength of 250 MPa, combined with exceptional weldability and availability in virtually every standard structural shape, makes it the default choice for beams, columns, and plate structures.
Key Properties
- Tensile Strength: 400–550 MPa
- Yield Strength: 250 MPa minimum
- Elongation: 20%
- Density: 7.85 g/cm³
- Weldability / Machinability: Excellent / Excellent
- Standard: ASTM A36
Common Applications
Structural I-beams, wide-flange sections, angles, channels, flat plate, base plates, gussets, bridges, building frames, machinery bases, and general fabricated steel structures.
Material properties
| Material name | A36 |
|---|---|
| Type | Carbon & Alloy Steel |
| Standard code | ASTM A36 |
| Tensile strength (MPa) | 400 |
| Yield strength (MPa) | 250 |
| Fatigue strength (MPa) | 165 |
| Elongation (%) | 20 |
| Hardness (Brinell) | 119 |
| Density (g/cm³) | 7.85 |
| Electrical resistivity (µΩ·in) | 10 |
| Thermal conductivity (W/m·K) | 51.9 |
| Melting range (°C) | 1425–1530 |
| Weldability | Excellent |
| Formability | Excellent |
| Shear modulus | 79.3 |
| Industry code | a36 |