| Euronomy | Execution | Material | ASTM, ASME | W.Stoff | Operating temp. | RFQ | |
|---|---|---|---|---|---|---|---|
P355QH |
Bars | Unalloyed boilersteel | A/SA 350 LF2 Cl.1 | 1.0471 | -20°C to 400°C |
P355QH is a high temperature, high strength, case hardened, fine grain steel used for pressure vessel applications.P355QH is the material designation according to the EN (European Norm) system. "P" stands for "Pressure" and "420" indicates the minimum yield strength in megapascals (MPa), however this depends on the dimension or thickness and may vary. "QH" means that it is a case hardened material suitable for high temperature applications. P355QH is specifically designed for use in high temperature applications, such as pressure vessels and boilers, where the material is exposed to elevated temperatures and pressures. It has good formability in both hot and cold conditions and good weldability. The steel is often impact tested in temperatures down to -60°C, giving it a wide working temperature range. P355QH is widely used in industries such as oil and gas, petrochemicals and power generation.