Need reliable P355N steel plates? ANSON provides EN10028-3 normalized weldable fine grain steel plates for critical pressure equipment. Thickness ranges from 8 mm to 260 mm, with room temperature tensile properties of 450–630 MPa and elongation 21–22%.
P355N steel plates
P355N plates are widely used in boilers, nuclear reactors, oil & gas tanks, heat exchangers, and turbine casings. All plates are mill-certified and HIC-tested, giving you peace of mind for industrial applications.
What is EN10028-3 P355N Steel Plate?
EN10028-3 P355N steel plate is a room temperature quality grade weldable fine grain steel used for pressure vessels, boilers, and pipes transporting hot liquids.
Steel Grade Levels under EN10028-3 Standard:
- Room Temperature Quality Grade: P355N
- High-Temperature Quality Grade: P355NH
- Low-Temperature Quality Grades: P355NL1, P460NL1
- Special Low-Temperature Quality Grades: P355NL2, P460NL2
Mechanical Properties of EN10028-3 P355N Steel Plate
| Grade | Thickness (mm) | Yield Strength MPa | Tensile Strength MPa | Elongation % |
|---|---|---|---|---|
| P355N | 8-16 | 355 | 490-630 | 22 |
| 16-35 | 355 | 490-630 | 22 | |
| 35-50 | 345 | 490-630 | 22 | |
| 50-70 | 325 | 490-630 | 22 | |
| 70-100 | 315 | 470-610 | 21 | |
| 100-150 | 295 | 450-590 | 21 | |
| 150-260 | 295 | 450-590 | 21 |
Hydrogen-Induced Cracking (HIC) Test of EN10028-3 P355N Steel Plate
Gnee Steel ensures the P355N steel plate resistance to hydrogen-induced cracking (HIC) according to EN10229. Testing can be conducted using:
Test Solution A (pH 3)
Test Solution B (pH 5)
Acceptance Grades:
Grade I / II / III
CLR%: Crack Length Ratio
CTR%: Crack Thickness Ratio
CSR%: Crack Sensitivity Ratio
This ensures high-quality steel performance in hydrogen-containing environments, ideal for pipelines and vessels transporting hydrogen-rich liquids.
Advantages of EN10028-3 P355N Steel Plates
Normalized weldable fine grain steel with excellent mechanical properties
Suitable for high-stress, high-pressure applications
Resistant to hydrogen-induced cracking (HIC tested)
Available in thickness 8-260mm, wide width and length options
Factory services include cutting, pretreatment, galvanizing, testing, and heat treatment
Applications of P355N Pressure Vessel Steel Plate
Boilers and heat exchangers
Oil, gas, and LPG tanks
Nuclear reactor pressure shells
Reactors, separators, and spherical tanks
Hydropower station high-pressure water pipes and turbine casings
EN10028-3 P355N Pressure Vessel Steel Plate is ideal for room temperature welded constructions in boilers, pressure vessels, and pipelines.
Gnee Steel, as a professional P355N steel plate manufacturer in China, offers competitive prices, high-quality products, and comprehensive services including cutting, testing, and HIC evaluation.
Contact us for the latest EN10028-3 P355N steel plate price and availability.
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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.