S355J0
1.0553Non-alloy structural steel with 355 MPa min yield and 27J impact at 0°C. The "J0" variant between JR (+20°C) and J2 (-20°C). Former designation St52-3U (DIN 17100). Good weldability (CEV ≤0.47). Used for bridges, cranes, buildings, wind turbines, heavy machinery frames, and general structural applications requiring moderate low-temperature toughness.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | ASTM A572 Grade 50 (approximate) | — | REF |
| 🇪🇺 | EN | Europe | S355J0 / 1.0553 | 1.0553 | 100% |
| 🇩🇪 | DIN | Germany | St52-3U (obsolete) | — | 100% |
Sources: ASTM A572, EN 10025-2, DIN 17100
Chemical composition comparison (wt%)
Side-by-side: S355J0 (EN) (EN 10025-2) vs S355J0 / 1.0553 (EN) (EN 10025-2)
| Element | S355J0 (EN) | S355J0 / 1.0553 (EN) | Overlap |
|---|---|---|---|
| C | 0–0.22% | 0–0.22% | OK |
| Si | 0–0.55% | 0–0.55% | OK |
| Mn | 0–1.6% | 0–1.6% | OK |
| P | 0–0.035% | 0–0.035% | OK |
| S | 0–0.035% | 0–0.035% | OK |
| Cu | 0–0.55% | 0–0.55% | OK |
| N | 0–0.012% | 0–0.012% | OK |
Mechanical properties
General
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 470–630 | MPa |
| Yield Strength | ≥ 355 | MPa |
| Elongation | ≥ 22 | % |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Compatibility verdict
S355J0 and S355J0 / 1.0553: 100% composition match
Close equivalents but NOT identical.
Related materials
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).
S690QL
1.8928High-strength quenched and tempered fine-grain structural steel with minimum yield strength of 690 MPa. Used for heavily loaded structures like mobile cranes, mining equipment, bridges, and pressure vessels.
S275JR
1.0044Medium-strength structural steel with minimum yield strength of 275 MPa. Bridges the gap between S235JR and S355JR. Used for general structural applications, lattice towers, masts, and light crane components. Impact tested at +20°C (JR).
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