What is P355GH material

Nov 19, 2025 Leave a message

What is P355GH material?

Steel for heat-resistant pressure vessels. P355GH steel gives optimum performance for pressurised products that must support a creep limit greater than 180N/mm2 at 400ºC. These types of steel are characterised by good weldability.

 

What is the difference between P355GH and P355NH?

P355GH: This steel is designed for high-temperature applications and is characterized by high strength at temperatures up to 500 °C. P355NH: This steel is designed for low-temperature applications and is characterized by high toughness at low temperatures.

 

What is P355GH equivalent to ASTM material?

P355GH pressure vessel steel is an equivalent to ASTM A516 Grade 70 and ASME SA516 Grade 70. Widely used throughout the petrochemical industry, P355GH is a pressure vessel steel grade as specified under the Euro Norm standard (EN10028) which has superseded British Standard and DIN standard equivalents.

 

What is the yield strength of P355GH?

The yield strength ranges between 315 and 355 MPa, according to the range of thicknesses and its tensile strength goes from 510 to 650 MPa.

 

What is the difference between P265GH and P355GH?

P355GH is another popular pressure vessel steel grade that offers higher strength compared to P265GH. The key differences include: Strength: P355GH has a minimum yield strength of 355 MPa, which is significantly higher than P265GH's 265 MPa.