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EN 10025 S355J2G3 Steel – Normalized & Normalized Formed (N) – High-Strength, Durable Construction Material

S355J2G3 is a high-tensile fine grained steel for welding constructions of dynamic load. The steel is applicated up to temperatures of -20°C. Compared to S235J2G3 is achievable a considerable saving of material due to the by 120 MPa higher yield point. The steel shows a by 15% higher resistance to mineral wear due to sliding action in comparison to S235J2G3. For this steel are available (mat. No 1.0569 acc. to DIN EN 10025) grades for: - folding (KQ)-S355J2G3C - cold forming of sections (KP)-S355J2G3C - cold drawing (KZ)-S355J2G3C.

Properties

General

PropertyTemperatureValue

Density

20.0 °C

7.83 g/cm³

Mechanical

PropertyTemperatureValueComment

Elastic modulus

-100.0 °C

217 GPa

20.0 °C

212 GPa

100.0 °C

207 GPa

200.0 °C

199 GPa

300.0 °C

192 GPa

400.0 °C

184 GPa

500.0 °C

175 GPa

600.0 °C

164 GPa

Elongation

20.0 °C

17 - 22 %

Elongation A80

20.0 °C

14 - 18 %

Elongation A80, transverse

20.0 °C

12 - 16 %

Elongation, transverse

20.0 °C

17 - 20 %

Poisson's ratio

23.0 °C

0.29 [-]

Typical for Low Carbon Steel

Shear modulus

23.0 °C

82 GPa

Typical for Low Carbon Steel

Tensile strength

20.0 °C

450 - 680 MPa

Yield strength

20.0 °C

275 - 355 MPa

Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

-100.0 °C

1.08E-5 1/K

20.0 °C

1.19E-5 1/K

100.0 °C

1.25E-5 1/K

200.0 °C

1.3E-5 1/K

300.0 °C

1.36E-5 1/K

400.0 °C

1.41E-5 1/K

500.0 °C

1.45E-5 1/K

600.0 °C

1.49E-5 1/K

Max service temperature

500 °C

Typical for Carbon Steel

Max service temperature, long

-20 - 300 °C

Melting point

1480 - 1526 °C

Typical for Low Carbon Steel

Specific heat capacity

-100.0 °C

423 J/(kg·K)

20.0 °C

461 J/(kg·K)

100.0 °C

479 J/(kg·K)

200.0 °C

499 J/(kg·K)

300.0 °C

517 J/(kg·K)

400.0 °C

536 J/(kg·K)

500.0 °C

558 J/(kg·K)

600.0 °C

587 J/(kg·K)

Thermal conductivity

-100.0 °C

37.6 W/(m·K)

20.0 °C

42.2 W/(m·K)

100.0 °C

43.2 W/(m·K)

200.0 °C

42.9 W/(m·K)

300.0 °C

41.2 W/(m·K)

400.0 °C

39.1 W/(m·K)

500.0 °C

36.6 W/(m·K)

600.0 °C

34.1 W/(m·K)

Thermal diffusivity

-100.0 °C

12.9 mm²/s

20.0 °C

11.7 mm²/s

100.0 °C

11.2 mm²/s

200.0 °C

10.3 mm²/s

300.0 °C

9.4 mm²/s

400.0 °C

8.3 mm²/s

500.0 °C

7.1 mm²/s

600.0 °C

5.7 mm²/s

Electrical

PropertyTemperatureValue

Electrical resistivity

-100.0 °C

1.82E-7 Ω·m

20.0 °C

2.47E-7 Ω·m

100.0 °C

2.96E-7 Ω·m

200.0 °C

3.68E-7 Ω·m

300.0 °C

4.55E-7 Ω·m

400.0 °C

5.56E-7 Ω·m

500.0 °C

6.75E-7 Ω·m

600.0 °C

8.13E-7 Ω·m

Magnetic

PropertyValueComment

Curie temperature

770 °C

Typical for Low Carbon Steel

Chemical properties

PropertyValue

Carbon

0.2 %

Manganese

1.6 %

Phosphorus

0.04 %

Silicon

0.55 %

Sulfur

0.035 %


Metal

  1. EN 10250-2 Grade S355J2G3 – Normalized or Normalized Formed Steel for High-Performance Welding Applications
  2. EN 10025 S450J0 Steel – Normalized/Normalized Formed Grade (+N) for Long Products
  3. EN 10025 Grade RoSt 44-3: Normalized/Normalized Formed Steel for Welded Tubes
  4. EN 10025 KSt 44-3 Steel: Normalized & Normalized-Formed Grade for Roll-Forming Applications
  5. EN 10025 QSt 44-3 Steel – Normalized/Normalized Formed (+N) for High-Performance Applications
  6. EN 10025 S235J2C Steel – Normalized & Normalized Formed (+N) for Structural Applications
  7. EN 10025: S275J2C Cold‑Forming Steel (Normalized/NF+N) – High‑Strength, Versatile Structural Grade
  8. EN 10025 Grade S275J2G3 – High‑Yield Normalized Steel for Dynamic Load Applications
  9. EN 10025 Grade S355K2G3: High-Strength Normalized/Normalized Formed Steel (+N)
  10. EN 10025 S235J2G3 Steel: Normalized / Normalized Formed Grade (+N) – High‑Load, Low‑Temperature Performance