Q390 Steel Properties, Chemical Composition & Equivalent
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Family: Structural Steel
Performance Ratings
Performance Radar
Composition
Mechanical Properties
| Hardness (Rockwell) |
Chemical Composition
| Element | Percentage (%) |
|---|---|
| B | – |
| N | 0.015 |
| P | 0.035 |
| S | 0.035 |
| V | 0.13 |
| Cr | 0.30 |
| Cu | 0.40 |
| Mn | 1.70 |
| Mo | 0.10 |
| Nb | 0.05 |
| Ni | 0.50 |
| Si | 0.55 |
| Ti | 0.05 |
| C % | 0.025 |
| Si % | 0.015 |
| Als (≥) | – |
| Quality Level | 0.025 |
Where to Buy Q390 Steel Properties, Chemical Composition & Equivalent
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Description
Q390 steel is a Chinese steel grade of Low Alloy High Strength Structural Steel, Yield Strength is 390 MPa, parameters are tested with 16mm diameter steel bars or steel plates, tensile strength is 470-630 Mpa, material density is 7.85 g/cm3. According to GB/T 1591-2018, Q390 has 3 quality levels: Q390B, Q390C, Q390D. The characters and uses of Q390 are similar to Q345 and Q355.