P355GH steel plate is a high-strength, fine-grain carbon-manganese steel designed for pressure vessel and boiler applications under elevated temperature conditions.
With a minimum yield strength of 355 MPa (for thickness ≤16mm), P355GH steel plates provide excellent weldability, ductility, and toughness, making them ideal for welded boilers, pressure tanks, and other pressure-containing equipment.
P355GH steel plate
For enhanced performance, P355GH steel can undergo Simulated Post Weld Heat Treatment (SPWHT) and Ultrasonic Testing (UT), ensuring reliability in critical industrial applications.
This steel grade is widely adopted in industries requiring elevated temperature resistance, including petrochemical, power generation, and chemical process plants.
Technical Requirements & Additional Services of P355GH Steel Plate
- High tension (tensile) testing
- Low-temperature impact testing
- Simulated Post Weld Heat Treatment (PWHT)
- Ultrasonic testing under EN 10160, ASTM A435, A577, A578
- Mill test certificates in EN 10204 format 3.1/3.2
- Custom processing: Shot blasting, painting, cutting, welding as per customer requirements
Mechanical Properties of P355GH Steel Plate
| Thickness (mm) | Yield Strength (MPa, min) | Tensile Strength (MPa) | Elongation (%) |
|---|---|---|---|
| ≤16 | 355 | 510 – 650 | 20 |
| 16 < T ≤ 40 | 345 | 510 – 650 | 20 |
| 40 < T ≤ 60 | 335 | 510 – 650 | 20 |
| 60 < T ≤ 100 | 315 | 490 – 630 | 20 |
| 100 < T ≤ 150 | 295 | 480 – 630 | 20 |
| >150 | 280 | 470 – 630 | 20 |
Chemical Composition (Heat Analysis Max %) of P355GH Steel Plate
| Element | C | Si | Mn | P | S | Al (total) | N | Cr | Cu | Mo | Nb | Ni | Ti | V | Cr+Cu+Mo+Ni |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P355GH | 0.10-0.22 | 0.60 | 1.10-1.70 | 0.025 | 0.015 | ≥0.020 | 0.012 | 0.30 | 0.30 | 0.08 | 0.020 | 0.30 | 0.03 | 0.02 | 0.7 |
Applications of P355GH Steel Plate of P355GH Steel Plate
Boilers & Boiler Drums: Shells, water walls, superheater tubes, economizer tubes
Heat Exchangers & Steam Generators: Shell-and-tube exchangers, process coolers, industrial heaters
High-Pressure Storage Tanks: Petroleum, gas, and LPG tanks
Chemical & Petrochemical Processing: Reactors, distillation columns, fractionators, high-temperature piping
Power Generation Equipment: Nuclear plant pressure components, feedwater heaters, condensers, steam generators
Tubes & Forgings: Seamless and welded tubes, forged components for pressure vessel fabrication
Why Choose P355GH Steel from Us
Large stock for fast delivery and customized dimensions
Strict quality control with full EN 10204 3.1/3.2 certification
Optional dual certification with ASTM A516 equivalents
Comprehensive technical support for design and fabrication
Global shipping with rust-proof packaging and traceable mill certificates
Gnee Industrial EN10028-2 P355GH steel plate provides a perfect balance of strength, weldability, and high-temperature performance for critical industrial applications.
Contact us today to request a quote or check stock availability. Our technical team will assist with custom sizes, certifications, and delivery options to meet your project needs.
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Application
What is P355GH material?
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. They are used above all for manufacturing boilers, pressure vessels and pipes for the transportation of hot liquids.
What is en 10028 P355GH equivalent to?
P355GH pressure vessel steel is an equivalent to ASTM A516 Grade 70 and ASME SA516 Grade 70.
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 P235gh pipe equivalent ASTM material?
P235gh grade is an alloy of European standard EN 10028-2, which is also called the A2885 grade C steel, The P235gh Equivalent Astm Material is the ASTM A285 or the A285M standard.
What is the yield strength of P355GH?
Carbon steels that are characterised by a greater resistance to pressure, capable of bearing significant pressure both at high and low temperatures. 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.