Low Alloy Steel
Q345 Low Alloy Steel
High-strength low alloy steel for buildings, bridges, cranes, and mining equipment.
Composition
| C | ≤0.20% |
| Mn | ≤1.70% |
| Si | ≤0.50% |
| V | ≤0.15% |
| Nb | ≤0.07% |
XRF Notes
Higher Mn and microalloy elements (V, Nb) distinguish Q345 from Q235 in scrap sorting.
GB/T 1591Q345BQ345C
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