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).
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | ASTM A36 | K02600 | REF |
| 🇪🇺 | EN | Europe | S275JR | 1.0044 | 100% |
| 🇪🇺 | DIN | Europe | St44-2 (old) | — | 98% |
| 🇨🇳 | GB | China | Q275 | — | 95% |
| 🇯🇵 | JIS | Japan | SS400 | — | 88% |
Sources: ASTM A36/A36M, EN 10025-2:2019, DIN 17100, GB/T 700, JIS G3101
Mechanical properties
Compatibility verdict
S275JR and St44-2 (old): 98% 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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