Here are the equivalent grades for S355J2W weathering steel plate across international standards:
European Standard (EN 10155)
S355J2WP (Similar but with slightly different impact toughness requirements)
American Standards (ASTM)
ASTM A588 Grade A/B (Closest US equivalent with similar corrosion resistance and mechanical properties)
ASTM A606 Type 4 (For thinner hot-rolled weathering steel sheets/strips)
Chinese Standards (GB/T)
Q355GNH (Equivalent weathering steel under GB/T 4171)
09CuPCrNi-A (Older Chinese weathering steel grade with similar performance)
Japanese Standard (JIS G 3114)
SMA570W (Weathering steel with comparable corrosion resistance and strength)
International Equivalents
ISO 5952: FE 355 W (International weathering steel standard)
DIN 17100: St52-3 W (German weathering steel equivalent)
Key Features Comparison
| Property | S355J2W (EN 10155) | ASTM A588 | Q355GNH (GB/T) | SMA570W (JIS) |
|---|---|---|---|---|
| Yield Strength | ≥355 MPa | ≥345 MPa | ≥355 MPa | ≥355 MPa |
| Corrosion Res. | Excellent (P, Cu, Cr) | Excellent | Excellent | Excellent |
| Applications | Bridges, Structures | Same | Same | Same |
Selection Guide
For Europe: Use S355J2W/S355J2WP (EN 10155)
For USA/Canada: ASTM A588 is the preferred choice
For China: Q355GNH (GB/T 4171) is the direct replacement
For Japan: SMA570W (JIS G 3114) offers similar performance
