EN 10028-3 P275N pressure purpose steel plate

If you are sourcing P275N pressure vessel steel plate, you are choosing one of the most practical and widely used materials for pressure equipment under the EN 10028-3 standard.

P275N pressure vessel steel plate

P275N is not just a standard grade - it is a proven solution used in thousands of industrial projects where stability, weldability, and cost control are critical. For most pressure vessel applications, it delivers exactly what engineers and buyers need without unnecessary upgrades.

At Gnee Steel, we specialize in supplying high-quality P275N steel plates (1.0486) with stable performance and flexible processing services. If your goal is to secure reliable material while optimizing procurement cost, P275N is the right place to start.

P275N is a fine-grain, non-alloy pressure vessel steel certified under EN 10028-3 with material number 1.0486.

• Delivery condition: Normalized (N)
• Minimum yield strength: 275 MPa
• Excellent weldability and machinability

As a normalized steel, P275N offers uniform microstructure and consistent mechanical performance, making it ideal for pressure-bearing applications.

At Gnee Steel, we offer a wide range of sizes to meet different project requirements:

This wide size range allows clients to reduce cutting waste and improve material utilization, especially for large-scale projects.

The controlled composition ensures excellent weldability and reduced cracking risk, which is essential for pressure vessel fabrication.

These values ensure that P275N can withstand internal pressure while maintaining ductility, reducing the risk of sudden failure.

P275N is widely used in industries requiring reliable pressure resistance and good weldability:

• Petroleum and petrochemical industry
• Chemical processing equipment
• Power plants and boilers
• Storage tanks and pressure vessels

For these applications, P275N offers a balanced solution between performance and cost, making it the preferred choice for standard conditions. 

To help clients reduce processing time and cost, we provide:

• CNC cutting
• Drilling
• Machining
• Welding support
• Surface treatment (including galvanization if required)

These services allow you to receive ready-to-use materials, improving overall project efficiency.

• Standard export seaworthy packaging
• Custom packaging available upon request
• Flexible delivery based on project schedule
• We ensure that every shipment is secure, traceable, and delivered on time.

When sourcing P275N steel, the difference is not just in the material - it is in the supplier's capability.

At Gnee Steel, we supply large volumes of P275N steel plates every year, serving clients across Asia, Middle East, Europe, and South America. This experience allows us to maintain stable quality and competitive pricing.

We support full traceability with EN 10204 3.1 Mill Test Certificates, ensuring compliance with international standards.

Our production and processing capability includes:

• Thickness up to 450 mm
• Width up to 4200 mm
• Precision cutting tolerance within ±1 mm

In terms of delivery, our typical lead time is 7–20 days, helping clients avoid delays in critical projects.

By working directly with Gnee Steel, you benefit from:

• Factory-direct pricing (no middleman)
• Stable long-term supply
• Fast response and technical support

This is why many of our customers choose to work with us repeatedly for their pressure vessel projects.

If you are currently sourcing P275N pressure vessel steel plate, now is the right time to secure a reliable supplier. Choosing the right material is important - but choosing a supplier who can guarantee quality, delivery, and price stability is what truly protects your project.

Send us your inquiry today to receive:

• Latest P275N price
• Available sizes and stock
• Mill Test Certificate (MTC)
• Fast delivery schedule
• A smart project starts with the right material.

And for most pressure vessel applications, that material is P275N. Let Gnee Steel support your project with reliable supply and professional service.

Contact now to get P275N steels Quote

What are the core differences between P275N, P275NH, P275NL1, and P275NL2?

The core differences lie in impact test temperature and applicable working conditions. All four grades have a minimum yield strength of ≥275MPa (for thickness ≤16mm) and comply with the EN 10028-3 standard:

P275N: Impact test at -20°C, suitable for normal-temperature pressure vessels and general industrial pipelines;

P275NH: Impact test at -20°C, optimized for high-temperature performance, adaptable to medium-to-high temperature pressure equipment below 350°C;

P275NL1: Impact test at -40°C, suitable for low-temperature storage tanks and separators in cold regions;

P275NL2: Impact test at -50°C, offering the best ultra-low temperature toughness, adaptable to cryogenic equipment such as liquid nitrogen/LNG systems.

What are the corresponding numerical designations for these four grades?

P275N: 1.0483;

P275NH: 1.0485;

P275NL1: 1.0488;

P275NL2: 1.1104.

Does thickness affect performance?

Yes, it does. When the thickness exceeds 16mm, the yield strength gradually decreases (e.g., ≥245MPa for 63~100mm), and the low-temperature toughness also slightly declines. For ultra-low temperature working conditions with thickness ＞40mm, it is recommended to prioritize P275NL2 and increase the sampling ratio for impact tests.

What are the key mechanical property indicators of the four grades?

Yield Strength (ReH): ≥275MPa for thickness ≤16mm, slightly decreasing with increasing thickness (e.g., ≥255MPa for 40~63mm);

Tensile Strength (Rm): 410~560MPa;

Impact Energy (KV): ≥27J for each corresponding impact temperature (regular supply meets ≥40J to enhance safety redundancy);

Elongation (A): ≥22%~24% (adjusted with thickness).

What is the range of available dimensions?

Thickness: 6mm~300mm;

Width: 1500mm~4800mm;

Length: 6000mm~18000mm;

Customized cutting, drilling, and beveling services are available, with a minimum cutting size of 500×500mm.

How is the weldability, and what are the welding recommendations?

It has excellent weldability (CEV ≤0.43%), with recommended solutions:

Welding Consumables: E5515-C1 for manual arc welding, H08MnA+F55A4 flux for submerged arc welding, and ER50-6 for gas metal arc welding;

Preheating Requirement: No preheating required for thickness ≤30mm; preheat to 100~150°C for thickness ＞30mm;

Interpass Temperature: ≤250°C, with heat input controlled at 15~35kJ/cm;

Post-Weld Heat Treatment (PWHT): Recommended for thick plates (＞50mm) – stress relief annealing at 580~620°C for 2 hours.

Can the P275 series be substituted for ASTM A516 Gr70 (American standard) or Q345R (Chinese standard)?

vs. ASTM A516 Gr70: Similar strength, but the P275 series offers better low-temperature toughness . The P275 series is preferred for European projects, while ASTM A516 Gr70 is suitable for North American projects;

vs. Q345R (GB 713): Q345R has higher yield strength (≥345MPa), but the P275 series excels in low-temperature performance (-20°C impact) and high-temperature stability. For international projects, it is recommended to select according to the EN standard first.

What are the differences between P275NL1/NL2 and 16MnDR (Chinese standard)?

16MnDR (GB 3531): Impact test at -40°C, yield strength ≥315MPa, suitable for domestic low-temperature projects;

P275NL1: Impact test at -40°C, yield strength ≥275MPa, belonging to the European standard system with higher international recognition;

P275NL2: Impact test at -50°C, offering better low-temperature toughness than 16MnDR, adaptable to more severe cryogenic working conditions.