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Q345B hot rolled low alloy steel round bar
Q345B is a widely used high-strength low-alloy structural steel. It offers excellent mechanical properties and weldability, making it suitable for various industrial applications. Equivalent to ASTM A572 Gr.50, EN S355JR, and DIN St52-3.
ASTM: A572 Grade 50EN: S355JRDIN: St52-3
MaterialGB/T 1591
ThicknessN/A (Round Bar)
WidthN/A (Round Bar)
LengthCustomizable
MOQ1 Ton
Lead Time7-15 days
PortShanghai / Tianjin
Response within 24 hours
In Stock — Ready to Ship
| Material Grade | GB/T 1591 | Standard | GB/T 1591 |
| Thickness Range | N/A (Round Bar) | Width Range | N/A (Round Bar) |
| Length Range | Customizable | MOQ | 1 Ton |
| Lead Time | 7-15 days | Port of Shipment | Shanghai / Tianjin |
| C | ≤0.20 | Si | ≤0.55 |
| Mn | 1.00-1.60 | P | ≤0.040 |
| S | ≤0.040 | V | 0.02-0.15 |
| Nb | 0.015-0.060 | Ti | 0.02-0.20 |
| Yield Strength | ≥345 MPa (≤16mm) | Tensile Strength | 470-630 MPa |
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