Looking for EN 10028-3 P275 series steel plates?
We are a leading supplier and stockist of P275NH, P275NL1, and P275NL2 pressure vessel steel. High quality, competitive price, and MTC provided.
Download the P275N MTC Datasheet PDF here.
Supply High-Quality EN 10028-3 P275 Series Steel Plates: P275NH, P275NL1, P275NL2
GNEE STEEL is a professional supplier and exporter of fine-grain structural steel plates for pressure vessels. We specialize in the EN 10028-3 standard, offering a comprehensive inventory of P275NH, P275NL1, and P275NL2 steel plates to meet diverse industrial requirements.
Whether you need steel for high-temperature boilers or low-temperature gas tanks, our P275 series products guarantee superior weldability and consistent mechanical properties.
Standard: EN 10028-3
Grades Available: P275N, P275NH, P275NL1, P275NL2
Certification: EN 10204 3.1 / 3.2 (TUV, SGS, BV Accepted)
Delivery Condition: Normalized (N)
What is the Difference Between P275NH, P275NL1, and P275NL2?
Choosing the right grade is critical for the safety of pressure vessels. Although they share the same minimum yield strength (275 MPa), the key difference lies in their impact test temperature and intended operating environment.
| Steel Grade | Full Name / Description | Impact Test Temperature | Main Application |
| P275NH | N + High Temperature | -20°C or 0°C | Boilers, Heat Exchangers, High-temp vessels |
| P275NL1 | N + Low Temperature | -40°C | Standard Pressure Vessels, Storage Tanks |
| P275NL2 | N + Special Low Temperature | -50°C | Cryogenic Tanks, Harsh Environments |
P: Pressure Vessel Steel
275: Minimum Yield Strength (MPa)
N: Normalized
H: High Temperature properties
L: Low Temperature toughness
P275NH / NL1 / NL2 Chemical Composition & Mechanical Properties
We ensure all our materials strictly adhere to the EN 10028-3 standard.
1. Chemical Composition (Max %)
| Grade | C | Si | Mn | P | S | Ni | Cr | Mo |
| P275NH | 0.16 | 0.40 | 0.80-1.50 | 0.025 | 0.015 | 0.30 | 0.30 | 0.08 |
| P275NL1 | 0.16 | 0.40 | 0.80-1.50 | 0.025 | 0.015 | 0.30 | 0.30 | 0.08 |
| P275NL2 | 0.14 | 0.40 | 0.80-1.50 | 0.020 | 0.010 | 0.30 | 0.30 | 0.08 |
2. Mechanical Properties (at Room Temperature)
Yield Strength: Min 275 MPa (for thickness ≤ 16mm)
Tensile Strength: 390 - 510 MPa
Elongation: Min 24%
Applications of P275 Series Steel Plates
Due to their excellent weldability and fine-grain structure, P275NH and P275NL1/NL2 plates are widely used in the fabrication of weldable pressure vessels for industrial use:
P275NH: Ideal for manufacturing boilers, steam drums, and thermal power station equipment.
P275NL1 / NL2: Specifically designed for LPG tanks, cryogenic storage vessels, and equipment operating in sub-zero climates (e.g., offshore oil & gas platforms).
Why Choose GNEE STEEL?
Large Stock: We hold ready stock of P275NH and P275NL1 plates in standard sizes (6mm - 100mm thickness).
Processing Services: Flame cutting, laser cutting, bending, and drilling according to your drawings.
Global Export: We export to Southeast Asia, South America, Middle East with professional packaging.
Quality Assurance: All plates come with Original Mill Test Certificates (MTC 3.1).
FAQ about P275 Steel
Q:What is grade P275N steel?
A:P275N steel is a weldable, normalized fine-grain steel (EN 10028-3 standard) for pressure vessels and boilers, offering good mechanical properties and weldability, especially for hot liquid transport, with variants (P275NH, P275NL1, P275NL2) for elevated or low-temperature service, characterized by a minimum yield strength of 275 MPa.
Key Characteristics:
Standard: EN 10028-3 (European standard for flat products for pressure purposes).
Type: Weldable fine-grain steel.
Condition: Typically supplied in the normalized condition (controlled heating/cooling for refined grain).
Application: Boilers, pressure vessels (petroleum, chemical, power plants), heat exchangers, piping for hot liquids.
Mechanicals: Min. yield strength of 275 MPa (varies slightly with thickness), good tensile strength.
Variants:
P275N: Room temperature quality.
P275NH: For elevated temperature applications.
P275NL1/NL2: For low-temperature use, with NL2 offering improved toughness.
Equivalents:
DIN: WStE 285.
ASTM: A516 Gr. 60 (similar).
Q: Is P275NH equivalent to ASTM A516 Grade 60?
A: They are similar but not identical. P275NH (EN standard) and ASTM A516 Gr 60 (ASME/ASTM standard) both have yield strengths around 260-275 MPa and are used for moderate/lower temperature service. However, they have different chemical composition limits. Always confirm with your engineer before substitution.
Q: Can you provide third-party inspection for P275NL2 plates?
A: Yes. Since P275NL2 is used in critical low-temperature environments, we welcome third-party inspections from TUV, SGS, BV, or LR to verify impact tests at -50°C.
Q: What documents do you provide with the shipment?
A: We provide the Commercial Invoice, Packing List, Bill of Lading, Certificate of Origin, and the EN 10204 3.1 MTC (Mill Test Certificate).
