S355J2G3 Steel Plates

S355J2G3 is a non-alloy structural steel often used in general construction and engineering applications. It is part of the European standard EN 10025 and typically used for components that require good mechanical properties and weldability. Here are the details, specifications, mechanical properties, and chemical composition of S355J2G3 steel:
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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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