S275J2
1.0145Structural steel with 275 MPa yield and guaranteed -20°C impact toughness. Mid-range in the EN 10025-2 structural series. Used for general welded structures, cranes, conveyor frames, and building steelwork in moderate cold-climate environments.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇪🇺 | EN | Europe | S275J2 | 1.0145 | 100% |
| 🇪🇺 | DIN | Europe | St 44-3 U (old) | — | 95% |
Sources: EN 10025-2:2019, DIN 17100
Chemical composition comparison (wt%)
Side-by-side: S275J2 (EN) (EN 10025-2:2019) vs St 44-3 U (old) (DIN)
| Element | S275J2 (EN) | St 44-3 U (old) (DIN) | Overlap |
|---|---|---|---|
| C | 0–0.18% | — | — |
| Mn | 0–1.5% | — | — |
| P | 0–0.025% | — | — |
| S | 0–0.025% | — | — |
| N | 0–0.012% | — | — |
Mechanical properties
General
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 410–560 | MPa |
| Yield Strength | ≥ 275 | MPa |
| Elongation | ≥ 23 | % |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Compatibility verdict
S275J2 and St 44-3 U (old): 95% 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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