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S355J0W

1.8959
Alloy SteelWeathering
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Structural weathering steel with minimum yield strength 355 MPa and impact testing at 0°C (J0 designation). Same composition and corrosion resistance as S355J2W but with less stringent impact requirements. Forms a self-healing protective patina. Used for general outdoor structural applications, containers, and architectural cladding where extreme low-temperature toughness is not required.

Chemical composition comparison (wt%)

Side-by-side: S355J0W (EN) (EN 10025-5:2004) vs ASTM

ElementS355J0W (EN)ASTMOverlap
C≤ 0.16%——
Si≤ 0.5%——
Mn0.5–1.5%——
P≤ 0.03%——
S≤ 0.03%——
Cr0.4–0.8%——
Cu0.25–0.55%——

Mechanical properties

General

PropertyValueUnit
Tensile Strength470–630MPa
Yield Strength≥ 355MPa
Elongation≥ 20%
impact_kv≥ 27J
Density≥ 7.85g/cm3
Elastic Modulus≥ 210GPa

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All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.