P355GH steel plate is a high-quality material for boilers and pressure vessels, characterized by minimum yield strength ranging from 280 to 355 MPa and excellent weldability.
Widely used for manufacturing boilers, pressure vessels, and pipes transporting hot liquids, this steel grade is engineered to maintain superior mechanical properties in elevated temperature applications.
P355GH steel plate
Gnee Industrial offers EN10028 P355GH steel plates from stock, ready for global shipment. All plates are fully traceable with mill test certificates, and optional stringent testing ensures reliability for critical applications.
Chemical Composition of P355GH Steel Plate
| Grade | C (%) | Mn (%) | S (%) | N (%) | Cu (%) | Nb (%) | Ti (%) | Si (%) | P (%) | Al (%) | Cr (%) | Mo (%) | Ni (%) | V (%) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P355GH | 0.10–0.22 | 0.10–1.70 | 0.015 | 0.012 | 0.30 | 0.020 | 0.03 | 0.60 | 0.025 | 0.020 | 0.30 | 0.08 | 0.30 | 0.02 |
Mechanical Properties of P355GH Steel Plate
| Grade | Type | Thickness (mm) | Yield Strength (MPa min) | Tensile Strength (MPa) | Elongation % (min) | Impact Energy KVJ (min) |
|---|---|---|---|---|---|---|
| P355GH | Normalized | ≤16 | 355 | 510–650 | 20 | 27–40 |
| 16 > to ≤40 | 345 | 510–650 | 20 | 27–40 | ||
| 40 > to ≤60 | 335 | 460–580 | 20 | 27–40 | ||
| 60 > to ≤100 | 315 | 490–630 | 20 | 27–40 | ||
| 100 > to ≤150 | 295 | 480–630 | 20 | 27–40 | ||
| 150 > to ≤250 | 280 | 470–630 | 20 | 27–40 |
Delivery Condition Options
- AR – As Hot Rolled
- N – Normalized
- T – Tempered
- Q – Quenched
- TMCP – Thermo-Mechanically Controlled Process
- Q+T – Quenched and Tempered
- UT – Ultrasonic Test (ASTM A435, ASTM A578-C/B/A, EN10160 S0E1/S1E2/S2E3/S3E4)
- Impact Test – Charpy impact testing at -20°C, 0°C, +20°C
- PWHT – Post Weld Heat Treatment
- HIC – Hydrogen-Induced Cracking test
- Z Test – Z15, Z25, Z35
Applications of P355GH Steel Plate
P355GH steel is widely applied across industries requiring high-pressure and high-temperature resistant materials:
- Boilers & Boiler Drums: Shells, water walls, superheater tubes, economizer tubes
- Heat Exchangers & Steam Generators: Industrial heaters, process coolers, shell-and-tube heat exchangers
- High-Pressure Storage Tanks: Petroleum, gas storage, LPG tanks
- Chemical & Petrochemical Processing: Reactors, distillation columns, piping systems for high-temperature fluids
- Power Generation Equipment: Nuclear plant pressure components, feedwater heaters, condensers
- Tubes & Forgings: Seamless and welded tubes, forged components for pressure vessel fabrication
P355GH steel ensures good performance at elevated temperatures, high creep resistance, and stable mechanical properties, making it a preferred choice for welded pressure vessels, boilers, and heat exchangers.
EN10028 P355GH steel plate is a high-performance boiler and pressure vessel material. With minimum yield strength of 280–355 MPa, excellent weldability, and reliable performance at high temperatures, P355GH steel is engineered for industrial safety, durability, and process reliability.
Gnee Industrial provides fully certified P355GH steel plates, sheets, tubes, and forgings, ready for worldwide shipment with full traceability and optional specialized testing for critical applications.
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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.