P355GH
P355GH is a high-strength unalloyed creep-resistant steel – for higher-loaded pressure vessels, boilers and piping at moderate temperatures.
Application & properties
P355GH is a high-strength unalloyed creep-resistant steel – for higher-loaded pressure vessels, boilers and piping at moderate temperatures.
- Highly loaded pressure vessels and steam boilers
- Piping for steam and water
- Plant and apparatus engineering
Chemical composition
Typical values in wt.-% per EN standard (heat analysis).
| Element | Content (%) |
|---|---|
| C | ≤ 0.22 |
| Si | ≤ 0.60 |
| Mn | 1.10–1.70 |
| P | ≤ 0.025 |
| S | ≤ 0.015 |
| Mo | ≤ 0.08 |
Mechanical properties
Typical values at room temperature per EN standard.
| Property | Value |
|---|---|
| Yield strength Rp0.2 (t ≤ 16 mm) | ≥ 355 MPa |
| Tensile strength Rm | 510–650 MPa |
| Elongation A | ≥ 22 % |
| Impact energy KV | ≥ 40 J |
Standards, equivalents & product forms
| Topic | Detail |
|---|---|
| Standards | EN 10028-2, EN 10216-2 |
| ASME/ASTM equivalent | ~ ASTM A516 Gr. 70 |
| Material no. | 1.0473 |
| Short name / aka | C-Stahl · warmfest · höherfest |
We supply P355GH as pipes, flanges and fittings – seamless or welded, on request with an EN 10204 3.1 / 3.2 mill certificate.
Frequently asked questions about P355GH
What distinguishes P355GH from P265GH?
P355GH has a higher yield strength (355 vs. 265 MPa) for higher-loaded parts at a comparable service temperature (~400 °C).
Is P355GH weldable?
Yes, with suitable welding sequence and preheating if required.
Request P355GH?
Grade, standard, size, pressure rating and quantity are enough – on request with an EN 10204 3.1 / 3.2 mill certificate. Your quote usually the same day.
All data are typical values per the relevant EN standards for first orientation – without warranty. The applicable standard and the mill certificate of the delivery are decisive.