CSA G40.21 300WT (44WT) Structural Steel
CSA G40.21 300WT (44WT) Structural Steel
Notch-tough Canadian weldable structural steel for bridges, cold-weather structures and dynamically loaded fabricated components.
Representative Properties
- Typical tensile strength: 450 MPa
- Typical yield strength: 300 MPa
- Typical density: 7.85 g/cm³
- Typical hardness: 135 HB
- Standard: CSA G40.21 Grade 300WT / 44WT
Values are representative for the named grade and condition. Final design and procurement must use certified supplier data and the applicable standard.
Material properties
| Material name | CSA G40.21 300WT (44WT) Structural Steel |
|---|---|
| Type | Carbon & Alloy Steel |
| Standard code | CSA G40.21 Grade 300WT / 44WT |
| Tensile strength (MPa) | 450 |
| Yield strength (MPa) | 300 |
| Fatigue strength (MPa) | 200 |
| Elongation (%) | 20 |
| Hardness (Brinell) | 135 |
| Density (g/cm³) | 7.85 |
| Electrical resistivity (µΩ·in) | 6.3 |
| Thermal conductivity (W/m·K) | 51.9 |
| Melting range (°C) | 1425–1538 |
| Weldability | Excellent |
| Formability | Good |
| Shear modulus | 80 |
| Industry code | csa_g40_21_300wt |