Looking for reliable P355N Steel Plate suppliers? You are in the right place. As a professional EN10028-2 steel plate manufacturer and exporter from China, Gnee provides high-quality P355N steel plates for boilers, pressure vessels, and hot-liquid transport applications.
Our plates meet EN10028-2 standards and offer excellent elevated temperature performance. Contact us today for quotes, technical specifications, and fast shipping.
Overview of P355N Steel Plate
P355N steel plate is a high-quality, non-alloy/low-alloy steel designed for elevated temperature service in pressure vessels, boilers, and piping systems. Classified under EN10028-2, it supersedes older BS and DIN standards, providing improved chemical and mechanical consistency for critical industrial applications.
P355N steel plate
At Gnee, we supply P355N steel plates in thicknesses from 6 mm to 300 mm, widths of 1500 mm to 4050 mm, and lengths up to 15,000 mm, ensuring versatility for diverse engineering projects.
Key Features of P355N Steel Plate
High yield strength for elevated temperature service
Excellent toughness across a wide temperature range (-20°C to +20°C)
Consistent mechanical and chemical properties for safety-critical applications
Suitable for welding and fabrication in pressure vessel construction
Compliance with EN10028-2, HIC, and NACE MR0175 standards
Chemical Composition of P355N Steel Plate
| Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Al (min) (%) | N (%) | Cr (%) | Cu (%) | Mo (%) | Nb (%) | Ni (%) | Ti (%) | V (%) | Carbon Equivalent (Ceq %) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P355N | 0.20 | 0.50 | 0.9-1.7 | 0.03 | 0.025 | – | 0.02 | 0.30 | 0.30 | 0.08 | 0.005 | 0.50 | 0.03 | 0.10 | C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15 |
This chemical composition ensures high strength and excellent elevated temperature performance while maintaining weldability and toughness.
Mechanical Properties of P355N Steel Plate
| Thickness (mm) | Yield (MPa) | Tensile Strength (MPa) | Elongation (%) | Impact Energy KV J Min |
|---|---|---|---|---|
| ≤16 | 355 | 490–630 | 22 | -20°C: 40, 0°C: 47, +20°C: 55 |
| >16–35 | 355 | 490–630 | 22 | 40 / 47 / 55 |
| >35–50 | 345 | 490–630 | 22 | 40 / 47 / 55 |
| >50–70 | 325 | 490–630 | 22 | 40 / 47 / 55 |
| >70–100 | 315 | 470–610 | 21 | 40 / 47 / 55 |
| >100–150 | 295 | 450–590 | 21 | 40 / 47 / 55 |
Notes: Suitable for elevated temperature service, pressure vessels, and hot-liquid piping.
Equivalent Grades of P355N Steel Plate
| Region / Country | Equivalent Grade |
|---|---|
| Europe | Fe E355 |
| Belgium | D52-1,2 |
| Germany | A St52 |
| France | A52CP |
| Italy | Fe510-1-KW |
| Sweden | SS 21,06,01 |
| India | Grade 1 |
| Japan | SPV 355 |
These equivalents make P355N steel plate ideal for global projects and compatible with European and Asian standards.
Applications of P355N Steel Plate
Boilers and pressure vessels for industrial plants
Hot liquid pipelines and heat exchangers
Power generation equipment and turbine casings
Industrial machinery requiring elevated temperature steel
Marine and offshore piping systems
Gangsteel ensures all P355N steel plates are mill-certified and ready for immediate fabrication.
Specifications of P355N Steel Plate
Thickness: 6 mm – 300 mm
Width: 1500 mm – 4050 mm
Length: 3000 mm – 15000 mm
Surface treatment: As-rolled, shot-blasted, or primer-coated
Custom dimensions available upon request
For elevated temperature and pressure applications, P355N Steel Plate under EN10028-2 is a proven choice, offering high strength, toughness, and global standard compliance. Gnee supplies P355N steel plates with flexible dimensions, full technical certification, and fast delivery.
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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.
What is P355NH material?
A pressure vessel steel grade with good weldability and high resistance to brittle cracking, P355NH is used by the world's fabricators for the manufacture of pressure vessel tanks for the storage of pressurised gases.
What is the temperature range of P355NH?
Its most widespread use is in application environments up to 400 ºC. P355NH steel is supplied in the normalised condition. The normalising temperature is 900 - 950 ºC, and it must be left in the furnace after temperature equalising for approximately 1 minute per millimetre of thickness of the plate.