P355GH
Data verifiedP355GH is the EN 10028-2 carbon steel for pressure purposes at elevated temperature — the European counterpart of A516 Gr.70 for boilers and PED vessels. The GH suffix denotes guaranteed high-temperature proof strength.
Chemical composition
| Element | Content (%) |
|---|---|
| C | 0.10–0.22 |
| Si | ≤0.60 |
| Mn | 1.10–1.70 |
| P | ≤0.025 |
| S | ≤0.015 |
| Cr | ≤0.30 |
| Ni | ≤0.30 |
Weight percent, per the governing standard ranges. Actual values per heat are on the mill certificate.
Properties
| Yield strength | ≥355 MPa (≤16 mm) |
| Tensile strength | 510–650 MPa |
| Impact | Tested at 20 °C per EN 10028-2 |
| Density | 7.85 g/cm³ |
Heat treatment
Supplied normalized. Elevated-temperature proof strength is tabulated in EN 10028-2 to 400 °C.
Equivalent grades
| Standard | Designation |
|---|---|
| din | 1.0473 (P355GH) |
| aisi | A516 Gr.70 (near) |
| jis | SGV480 (near) |
| gb | Q345R (near) |
Compare side by side: P355GH vs A516 Gr.70 · P355GH vs Q345R
Equivalents overlap in chemistry and use but are not always identical — see our equivalents guide before substituting in certified designs.
Applications & Processing
Applications: Boiler drums, pressure vessels, heat exchangers, process plant under PED.
Processing: Good weldability; normalizing after hot forming and PWHT follow EN/PED fabrication rules.
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Ask for a quotationVisit NasteelSource: EN 10028-2 published ranges · Last updated 2026-11-03. Data is indicative — verify critical values against the governing standard and mill certificate before use.