S355J2WP
1.8946Structural weathering steel with enhanced phosphorus content for accelerated patina formation and impact testing at -20°C (J2 designation). Same enhanced P content as S355J0WP but with guaranteed low-temperature toughness. Available only as flat products up to 12mm thickness. Used for unpainted bridges, outdoor sculptures, and architectural applications in colder climates where rapid, durable patina formation is desired.
Chemical composition comparison (wt%)
Side-by-side: S355J2WP (EN) (EN 10025-5:2004) vs ASTM
| Element | S355J2WP (EN) | ASTM | Overlap |
|---|---|---|---|
| C | ≤ 0.12% | — | — |
| Si | ≤ 0.75% | — | — |
| Mn | ≤ 1% | — | — |
| P | 0.06–0.15% | — | — |
| S | ≤ 0.03% | — | — |
| Cr | 0.3–1.25% | — | — |
| Cu | 0.25–0.55% | — | — |
Mechanical properties
General
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 470–630 | MPa |
| Yield Strength | ≥ 355 | MPa |
| Elongation | ≥ 20 | % |
| impact_kv | ≥ 27 | J |
| Density | ≥ 7.85 | g/cm3 |
| Elastic Modulus | ≥ 210 | GPa |
Related materials
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S235J2W
1.8961Entry-level structural weathering steel with minimum yield strength 235 MPa and impact testing at -20°C (J2 designation). Improved low-temperature toughness compared to S235J0W. Used for outdoor structural applications in colder climates where basic strength with atmospheric corrosion resistance is sufficient.
EN-GJS-500-7
5.3200Ferritic-pearlitic ductile cast iron with minimum tensile strength 500 MPa and minimum elongation 7%. The balanced grade offering significantly higher strength than EN-GJS-400-15 while retaining reasonable ductility. Mixed ferrite-pearlite matrix (typically 40-50% pearlite). Used for crankshafts, connecting rods, suspension components, gear housings, heavy-duty pipe fittings, and medium-stress structural castings. Equivalent to DIN GGG50, JIS FCD500.
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