EN10028-3 P275NL1 For Pressure Vessel Plate

EN10028-3 P275NL1 is a normalized fine-grain structural steel plate designed for pressure vessel and boiler applications operating at low temperatures.

The standard EN 10028-3 is issued by European Committee for Standardization (CEN) and specifies weldable fine-grain steels with improved notch toughness properties.

P275NL1 is widely used in Europe, the Middle East, and international EPC projects requiring low-temperature impact resistance and reliable mechanical performance.

At GNEE Steel, we supply EN10028-3 P275NL1 steel plates with strict quality control, third-party inspection options, and full export documentation support.

Meaning of P275NL1 Designation

P – Steel for Pressure purposes

275 – Minimum yield strength of 275 MPa

N – Normalized delivery condition

L1 – Low-temperature impact testing at -40°C

This makes P275NL1 suitable for pressure vessels exposed to cold service environments.

Standard: EN 10028-3, specifying flat steel products for pressurized service.

Grade: P275NL1, indicating a specific steel grade within the standard.

Application: Primarily used for manufacturing boilers, pressure vessels, and pipes carrying hot liquids.

Properties: Fine-grain structure, weldable, normalized, and designed for low-temperature impact resistance.

Delivery Condition: Typically supplied in a normalized or normalized rolled condition.

Low-Temperature Performance: Meets low-temperature impact test requirements, often specified at -40°C.

Other Designations: May also be referred to as P275N or P275NH, depending on specific requirements.

The guaranteed impact value at -40°C makes P275NL1 suitable for low-temperature service.

1. Excellent Low-Temperature Toughness

Certified Charpy V-notch testing ensures performance at -40°C.

2. Superior Weldability

Low carbon equivalent reduces cracking risk during welding.

3. Stable Mechanical Properties

Normalized rolling process improves grain structure uniformity.

4. Compliance with European Standards

Commonly required in EU, Middle East, and international refinery projects.

Due to its excellent low-temperature toughness, pressure resistance, processability, and cost-effectiveness, EN10028-3 P275NL1 Steel Plate is widely used in various industrial fields, especially suitable for the Middle East and African markets with booming infrastructure and petrochemical industries, as well as European markets requiring European standard certification:

• Pressure vessels and low-pressure storage tanks (oil tanks, gas tanks, chemical storage tanks), especially those used in low-temperature service environments;

• Boiler components, including boiler drums and heat exchangers, suitable for low to medium temperature and pressure boiler systems that need to withstand low-temperature working conditions;

• Industrial equipment and structural parts in petrochemical, chemical, and infrastructure fields, which are suitable for regions with large temperature differences and low-temperature environments;

• Storage and transportation equipment for low-temperature media, widely used in the chemical and energy industries in the Middle East, Africa and Europe.

Many international buyers compare P275NL1 with ASTM A516 Grade 60.

For European projects, P275NL1 is often mandatory due to EN compliance.

GNEE Steel specializes in pressure vessel plates with strong export capability.

Our strengths include:

• Stable steel mill cooperation
• Competitive pricing
• Fast delivery schedules
• OEM cutting and machining services
• Complete export documentation
• Experience serving EPC contractors and fabrication workshops

We understand the strict quality standards required for refinery, LNG, and power plant projects.

Get a Competitive Quote Today

If your project requires EN10028-3 P275NL1 Pressure Vessel Steel Plate, GNEE Steel can provide:

• Reliable quality
• Full traceability
• Professional export service
• Quick response within 12 hours

Send us your project specifications and quantity requirements today.

EN10028-3 P275NL1 – Reliable Low-Temperature Pressure Vessel Steel for Global Industrial Projects.

1. What is the key difference between P275NL1 and P275NH?

Both are normalized fine-grained steels, but P275NL1 has:

Stricter impact toughness requirements:

Minimum 40J at -60°C (vs. -50°C for P275NH)

Lower phosphorus/sulfur limits (P≤0.020%, S≤0.008%)

Mandatory through-thickness (Z-direction) testing for thicker plates

Preferred for critical cryogenic applications (e.g., LNG, ethylene storage)

2. What mechanical properties must P275NL1 satisfy?

Tensile strength: 430-580 MPa

Yield strength: ≥275 MPa

Elongation: ≥22% (for t ≤ 16mm)

Charpy V-notch impact energy:

40J at -60°C (standard)

Optional grades available for -70°C service

3. How does the chemical composition enhance low-temperature performance?

Carbon Equivalent (CEV) ≤ 0.42 ensures excellent weldability.

4. What heat treatment and testing are mandatory?

Normalization (890-950°C + air cooling) for all thicknesses.

Additional tests:

Ultrasonic testing (UT) for plates >30mm.

Z-direction testing (reduction of area ≥35%) for thickness >40mm.

Crack tip opening displacement (CTOD) testing for critical applications.

5.Is P275NL1 suitable for cryogenic service?

It is suitable for low-temperature service down to -40°C. For lower temperatures, special cryogenic grades are recommended.

Hot Tags: en10028-3 p275nl1 for pressure vessel plate, China en10028-3 p275nl1 for pressure vessel plate manufacturers, suppliers, factory, P355NB pressure vessel quality steel, P460Q P460QH Steel Boiler Plate, P420ML2 Pressure Vessel Steel, industrial steel boiler, P355GH P460NH Vessel Plate, P355NL1 P355NL2 Boiler Steel Plate