Element	Content (%)
Carbon (C)	0.20 Max
Silicon (Si)	0.55 Max
Manganese (Mn)	1.60 Max
Phosphorus (P)	0.035 Max
Sulfur (S)	0.035 Max
Chromium (Cr)	0.30 Max
Aluminum (Al)	0.30 Max
Copper (Cu)	0.45 Max

S355J2G3 Mechanical Properties:

• Elastic Modulus: 217 GPa @ 100 °C
• Elongation (A): 17 – 22 % @ 20 °C
• Elongation (A80): 14 – 18 % @ 20 °C
• Elongation (A80, transverse): 12 – 16 % @ 20 °C
• Elongation (transverse): 17 – 20 % @ 20 °C
• Poisson’s Ratio: 0.29 [-] @ 20 °C
• Shear Modulus: 75 – 80 GPa @ 20 °C
• Tensile Strength: 450 – 680 MPa @ 20 °C
• Yield Strength: 275 – 355 MPa @ 20 °C

S355J2G3 Hardness:

• Typical Hardness: Information not specified; usually determined based on specific application and heat treatment.

S355J2G3 Heat Treatment:

• Hardening: Not typically required due to the steel’s inherent properties; standard applications may not require additional hardening.
• Tempering: Details typically provided based on specific application and required mechanical properties.

S355J2G3 Physical Properties:

• Density: 7.83 g/cm³ at 20 °C

S355J2G3 Thermal Properties:

• Coefficient of Thermal Expansion (α): 1.08E-5 1/K at -100 °C
• Thermal Conductivity (λ): 37.6 W/(m·K) at -100 °C
• Thermal Diffusivity (αdiff): 12.9 mm²/s at -100 °C

S355J2G3 Forging Properties:

• Forging Temperature: Typically forged at temperatures above 1000°C; specific details provided based on application requirements.

S355J2G3 Stress Relieving:

• Stress Relieving: Typically done at temperatures around 600-650°C to reduce residual stresses.

S355J2G3 Normalizing:

• Normalizing: Heat to 900-950°C and air cool to refine grain structure and improve mechanical properties.

S355J2G3 Annealing:

• Annealing: Heat to 680-720°C, hold at temperature, and cool slowly to improve machinability.

S355J2G3 Density:

• Density: 7.83 g/cm³ (same as Physical Properties).

S355J2G3 Machinability:

• Machinability: Generally good; specific details may vary based on application and heat treatment.

S355J2G3 Welding:

• Welding: S355J2G3 is weldable using standard techniques, including MIG and TIG welding. Preheating and post-weld heat treatment may be required depending on the thickness and application.

Titan Steel & Engineers Related Products:

Carbon Steel, Alloy Steel, Bright Steel, Spring Steel, Die Steel & Tool Steel, Special Alloy Steel

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