S355J2
1.0577High-strength structural steel with impact testing at -20°C (J2). Higher toughness than S355JR (tested at +20°C). Used for bridges, crane structures, offshore platforms, and cold-weather applications where impact toughness at sub-zero temperatures is required.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | ASTM A572 Gr 50 | K02502 | REF |
| 🇪🇺 | EN | Europe | S355J2 | 1.0577 | 100% |
| 🇨🇳 | GB | China | Q355D | — | 95% |
| 🇪🇺 | DIN | Europe | St52-3 N (old) | — | 95% |
Sources: ASTM A572/A572M, EN 10025-2:2019, GB/T 1591, DIN 17100
Mechanical properties
Compatibility verdict
S355J2 and Q355D: 95% composition match
Related materials
C45
1.0503Medium carbon unalloyed quality steel. Good machinability and moderate strength after heat treatment. Widely used for shafts, spindles, pins, studs, and general machine parts.
S355JR
1.0045High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).
S235JR
1.0038General-purpose structural steel with minimum yield strength of 235 MPa. The most common structural steel grade in Europe for general construction, frames, and non-critical structural applications.
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