Q355b High Tensile Modulus Span

Q355b is a low-alloy high-strength Structural Steel with a yield strength greater than 355MPa offering excellent weldability and toughness. Commonly used in construction, bridges, machinery, and pressure vessels, equivalent to ASTM A572 Grade 50, DIN St52-3, or EN S355JR.

Key Properties and Composition:-

• Yield Strength: over 355MPa
• Tensile Strength: 470-630 MPa
• Impact Test: over 34J at 0 deg C (impact energy absorbed)
• Composition: Low carbon (<0.24%) with Si, P and S
• Weldability: Good. Usually no preheating required.

Common Applications

• Construction: High-rise buildings, bridges and tower structures
• Machinery: Crane Booms, crane structures and hydraulic supports.
• Transportation: Ship components and automobile frames.
• Pipes: Used in manufacturing structural steel pipes and pressure vessels.

This material offers a favorable balance between strength and cost, making it a standard choice for heavy-duty structural applications. ( Source: Bebon Steel)