EN10028-6 P355Q For Pressure Vessel Plate

 

EN10028-6 P355Q is a quenched and tempered (Q&T) weldable fine-grain steel plate specifically designed for pressure vessel applications requiring reliable performance at low temperatures down to -20°C.

 

• Standard: EN 10028-6:2017 (Flat products for pressure purposes – Part 6: Weldable fine grain steels, quenched and tempered)
• Material Number: 1.8860
• Delivery Condition: Quenched and Tempered (Q&T) (mandatory for all thicknesses)
• Key Feature: -20°C impact resistance (Q designation) with 27 J minimum impact energy
• Brand: GNEE Steel – Your Trusted Pressure Vessel Steel Partner Since 2008

 

 

Chemical Composition (Max %, unless specified)

Element	C	Si	Mn	P	S	Cr	Mo	Ni	Cu	Nb	V	Ti	N	B
Content	0.16	0.40	1.50	0.025	0.015	0.30	0.25	0.50	0.30	0.05	0.06	0.03	0.015	0.005

 

Mechanical Properties (Min/Range)

Property	Value (t≤50mm)	Value (50<t≤100mm)	Value (100<t≤150mm)	Test Condition
Yield Strength (Re)	355 MPa	335 MPa	315 MPa	-
Tensile Strength (Rm)	490-630 MPa	490-630 MPa	450-590 MPa	-
Elongation (A)	≥22%	≥22%	≥22%	50mm gauge length
Impact Energy (KV2)	≥27 J	≥27 J	≥27 J	At -20°C
Brinell Hardness (HBW)	≤235	≤235	≤235	-

 

Dimensional Range

Dimension	Range
Thickness	8mm-150mm (optimum for P355Q)
Width	1000mm-4200mm
Length	5000mm-18000mm

 

 

 

• Low-Temperature Toughness: Maintains ductility and strength at -20°C for cryogenic pressure applications
• Excellent Weldability: Fine-grain structure enables high-quality welds with minimal preheating requirements
• Balanced Strength & Ductility: 355 MPa yield strength combined with ≥22% elongation for safe pressure vessel design
• Good Formability: Easily shaped for complex vessel geometries despite high strength
• Cost-Effective: Optimal alloy composition provides performance without excessive costs

 

 

EN10028-6 P355Q is ideal for:

• Pressure Vessels: Spherical tanks, cylindrical vessels, and heat exchangers
• Oil & Gas Industry: Storage tanks, separators, and pipeline components
• Chemical Processing: Reactors, distillation columns, and process vessels
• Power Generation: Boiler components and pressure piping systems
• Cryogenic Equipment: Vessels operating at temperatures down to -20°C
• Heavy Industry: High-pressure autoclaves and industrial processing equipment

 

 

At GNEE Steel, we produce EN10028-6 P355Q plates with:

 

• 18+ Years of Pressure Vessel Steel Expertise (since 2008)
• State-of-the-Art Quenching & Tempering Process: Precision heat treatment for consistent mechanical properties across all thicknesses
• Rigorous Quality Control: Full traceability from raw material to final product
• Certifications: ISO 9001, EN 10204 3.2, and pressure equipment directives compliance
• Custom Solutions: Cut-to-size, special surface treatments, and third-party inspections (ABS, DNV, Lloyd's) available

 

 

✅ Trusted Supplier: Exported to 70+ countries with 600+ global partners

✅ Competitive Pricing: Direct factory pricing with no middlemen

✅ Fast Delivery: In-stock availability for standard sizes (10mm-50mm × 2000mm × 6000mm)

✅ Technical Support: Expert team for material selection and application guidance

✅ Customization: Thickness, width, length, and special processing options (beveling, shot blasting)

 

 

Every P355Q plate from GNEE undergoes:

• Chemical analysis (spectrometry)
• Mechanical testing (tensile, impact at -20°C, hardness)
• Ultrasonic inspection (100% coverage for critical applications)
• Dimensional verification
• Visual and surface quality checks
• Compliance documentation (EN 10204 3.2 certificates)

 

 

Need EN10028-6 P355Q pressure vessel plates for your project?

Email: alloy@gneesteelgroup.com

WhatsApp: +86-15824687445

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Get your free EN 10028-6 material certificate and technical datasheet now!

 

 

 

 

 

 

We have excellent after-sales service. If you have any questions about SA302 Grade A vessel platel, you can contact us and we will reply you within two hours.

 

 

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