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.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | ASTM | USA | ASTM A36 | K02600 | REF |
| 🇪🇺 | EN | Europe | S235JR | 1.0038 | 100% |
| 🇪🇺 | DIN | Europe | St37-2 (old) | — | 98% |
| 🇨🇳 | GB | China | Q235B | — | 95% |
| 🇯🇵 | JIS | Japan | SS400 | — | 88% |
Sources: ASTM A36/A36M, EN 10025-2:2019, DIN 17100, GB/T 700, JIS G3101
Chemical composition comparison (wt%)
Side-by-side: S235JR (EN) (EN 10025-2:2019) vs ASTM A36 (ASTM) (ASTM A36/A36M)
| Element | S235JR (EN) | ASTM A36 (ASTM) | Overlap |
|---|---|---|---|
| C | 0–0.17% | 0–0.26% | OK |
| Si | — | 0–0.4% | — |
| Mn | 0–1.4% | 0–1.35% | OK |
| P | 0–0.035% | 0–0.04% | OK |
| S | 0–0.035% | 0–0.05% | OK |
| Cu | 0–0.55% | — | — |
| N | 0–0.012% | — | — |
Mechanical properties
General
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 360–510 | MPa |
| Yield Strength | ≥ 235 | MPa |
| Elongation | ≥ 26 | % |
| Hardness HB | ≤ 150 | HB |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Compatibility verdict
S235JR and ASTM A36: 90% composition match
Close equivalents but NOT identical. Critical differences: C range (0–0.17 vs 0–0.26), Mn range (0–1.4 vs 0–1.35), P range (0–0.035 vs 0–0.04), S range (0–0.035 vs 0–0.05).
For dual certification, melt must hit: C 0–0.17, Mn 0–1.35, P 0–0.035, S 0–0.035
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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