P235GH
1.0345Lowest-strength pressure vessel steel — ReH >=235 MPa. Excellent weldability due to very low C (max 0.16%). THE entry-level boiler/pressure vessel plate in EN 10028-2. Used for low-pressure vessels, boiler drums, heat exchangers, and steam piping at modest pressures and temperatures to ~400°C.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇪🇺 | EN | Europe | P235GH / 1.0345 | 1.0345 | 100% |
Sources: EN 10028-2
Chemical composition comparison (wt%)
Side-by-side: P235GH (EN) (EN 10028-2) vs P235GH / 1.0345 (EN) (EN 10028-2)
| Element | P235GH (EN) | P235GH / 1.0345 (EN) | Overlap |
|---|---|---|---|
| C | 0–0.16% | 0–0.16% | OK |
| Si | 0–0.35% | 0–0.35% | OK |
| Mn | 0–1.2% | 0–1.2% | OK |
| P | 0–0.025% | 0–0.025% | OK |
| S | 0–0.015% | 0–0.015% | OK |
Mechanical properties
Normalized
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 360–480 | MPa |
| Yield Strength | ≥ 235 | MPa |
| Elongation | ≥ 25 | % |
| Elastic Modulus | ≥ 210 | GPa |
| Density | ≥ 7.85 | g/cm3 |
Compatibility verdict
P235GH and P235GH / 1.0345: 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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