Key Specifications
1. Material Standard & Equivalent Grades
| Standard | Equivalent Grade | Region |
|---|---|---|
| DIN 17100 | WSt 37-2 | Germany (Old) |
| EN 10025-2 | S235JR | Europe |
| ASTM | A36 | USA |
| JIS | SS400 | Japan |
| GB/T | Q235B | China |
2. Chemical Composition (Max %)
| C | Si | Mn | P | S |
|---|---|---|---|---|
| 0.17 | 0.35 | 1.40 | 0.045 | 0.045 |
Low Carbon Content: Ensures excellent weldability.
No Alloying Elements: Economical but lacks corrosion resistance (not a weathering steel).
3. Mechanical Properties
| Property | Value | Test Standard |
|---|---|---|
| Yield Strength (ReH) | ≥235 MPa (min) | EN ISO 6892-1 |
| Tensile Strength (Rm) | 360-510 MPa | EN ISO 6892-1 |
| Elongation (A₅) | ≥26% (thickness ≤16mm) | EN ISO 6892-1 |
| Impact Toughness | ≥27J at +20°C (optional) | EN ISO 148-1 |
4. Delivery Conditions
Hot-rolled (HR), normalized (N), or as-rolled.
Surface: Mill scale (can be shot-blasted or painted).
Typical Applications
General construction (beams, columns, brackets).
Machinery frames and agricultural equipment.
Non-critical pressure vessels and storage tanks.
Not recommended for corrosive environments (use galvanized or weathering steel instead).
Comparison to Similar Grades
| Grade | Yield Strength (MPa) | Corrosion Resistance | Cost |
|---|---|---|---|
| WSt 37-2 | 235+ | Low (carbon steel) | Low |
| S355JR | 355+ | Low | Medium |
| A588 | 345+ | High (weathering) | High |
