Description
Chemical Composition (Percentage by Weight):
| Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) |
|---|---|---|---|---|
| 0.20% max | 0.55% max | 1.60% max | 0.035% max | 0.035% max |
Mechanical Properties:
| Tensile Strength (at room temperature) | Yield Strength (at room temperature) | Elongation (in 50mm) | Charpy V-Notch Impact Test |
|---|---|---|---|
| 470-630 MPa | 355 MPa min | 22% min | 27 J (20 ft-lbf) minimum at -20°C (-4°F) |
Typical Properties:
| Density | Thermal Expansion | Electrical Conductivity | Poisson’s Ratio | Modulus of Elasticity (Young’s Modulus) |
|---|---|---|---|---|
| 7.85 g/cm³ (0.284 lb/in³) | 12.5 x 10^(-6)/°C (7 x 10^(-6)/°F) | 17% IACS (International Annealed Copper Standard) | 0.27-0.30 | 190-210 GPa (27.5-30.5 x 10^6 psi) |
Key points about S355J2G3 steel:
Strength: S355J2G3 has a good balance of strength and ductility, with a decent tensile strength and yield strength, making it suitable for structural applications.
Weldability: It is known for its excellent weldability, which means it can be easily and reliably welded using various welding methods.
Chemical Composition: The low carbon content of S355J2G3 contributes to its weldability, and the manganese content helps improve its mechanical properties.
Ductility: This steel grade exhibits good elongation properties, allowing it to withstand deformation without brittle failure.
Applications: S355J2G3 is used in a wide range of applications, including construction, machinery manufacturing, and general engineering projects.
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