ST52-3 is a low-alloy, high-strength structural steel grade used primarily for structural applications. It is known for its excellent combination of strength, toughness, and good weldability. The material is typically supplied in normalized or control-rolled conditions.
Chemical Composition:
Carbon (C): 0.20% max
Manganese (Mn): 1.60% max
Phosphorus (P): 0.025% max
Sulfur (S): 0.025% max
Silicon (Si): 0.55% max
Mechanical Properties:
Tensile Strength: 490-630 MPa
Yield Strength: 355 MPa (for thicknesses up to 16mm)
Elongation (in 80mm): 20% min
Elongation (in 50mm): 22% min
Physical Properties:
Density: 7.85 g/cm³
Modulus of Elasticity: 210 GPa
Weldability: ST52-3 is weldable using standard welding techniques like arc welding and resistance welding.
Formability: Good ductility allows for easy forming and bending.
Toughness: Exhibits good toughness, making it suitable for dynamic loading.
Structural components in the construction of bridges, buildings, and other heavy structures.
Machinery parts and frames.
General engineering purposes.
Automotive components.
ST52-3 is commonly used in structural steelwork because of its excellent strength and versatility. It conforms to DIN 17100 standards.
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