Material Properties of S355 Steel
Chemical Composition:
Carbon (C): 0.23% maximum
Manganese (Mn): 1.60% maximum
Phosphorus (P): 0.035% maximum
Sulfur (S): 0.035% maximum
Silicon (Si): 0.55% maximum
Mechanical Properties:
Tensile Strength: 450-630 MPa
Yield Strength: 355 MPa (for thickness ≤ 16mm)
Elongation: 20% minimum (on gauge length of 5.65√So)
Density: 7850 kg/m³
Modulus of Elasticity: 190-210 GPa
Thermal Expansion: 11.5 x 10^(-6) /K
Thermal Conductivity: 50-68 W/m·K
Specific Heat Capacity: 470 J/kg·K
Electrical Resistivity: 0.0000159 Ω·m
Hardness (Brinell): 146 HB
Weldability: Good weldability with proper preheating and post-weld heat treatment.
Corrosion Resistance: Moderate corrosion resistance; additional protective measures may be required in corrosive environments.
Machinability: S355 steel has good machinability when compared to higher carbon steels, with suitable cutting parameters.
Impact Properties: Resistant to impact at room temperature and lower temperatures, making it suitable for structural applications in various industries.
These properties make S355 steel a versatile material for a wide range of structural, construction, and engineering applications, offering a balance of strength, ductility, and toughness.
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