P420N PVQ
High-performance P420N pressure vessel steel plate with excellent strength, weldability, and toughness for high-temperature industrial applications.
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High Strength: Minimum yield strength of 420 MPa for demanding pressure applications.
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Excellent Weldability: Low carbon equivalent ensures easy welding without cracking.
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Superior Toughness: Normalized condition improves impact resistance and structural integrity.
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Temperature Resistance: Designed for use in medium and high-temperature environments.
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Wide Application Range: Ideal for boilers, reactors, and petrochemical storage tanks.
P420N Steel Description
P420N steel is a high-strength pressure vessel steel plate under the EN 10028-3 standard, supplied in the normalized (N) condition. With a minimum yield strength of 420 MPa, this steel offers outstanding performance for manufacturing pressure vessels, boilers, and heat exchangers operating under high pressure and elevated temperatures.
Thanks to its balanced combination of strength, weldability, and impact resistance, P420N is widely used in oil & gas, petrochemical, and power generation sectors. It provides reliable performance even in dynamic or cyclic pressure environments, ensuring safety and durability.
P420N Technical Data Sheet
| P420N Chemical Composition | |||||||
| Element | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Al (min, %) | N (max, %) |
| ≤ 0.22 | ≤ 0.50 | 1.00–1.70 | ≤ 0.025 | ≤ 0.015 | ≥ 0.020 | ≤ 0.012 | |
| P420N Mechanical Properties | ||
| Property | Thickness (mm) | Minimum Value |
| Yield Strength (ReH) | ≤16 | 420 MPa |
| Tensile Strength (Rm) | ≤16 | 520–680 MPa |
| Elongation (A5) | — | ≥ 20% |
| Impact Energy (KV, 20°C) | — | ≥ 40 J |
P420N Applications
P420N steel plates are used in pressure equipment that requires high yield strength and superior toughness, particularly where safety and reliability are essential. Typical applications include:
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Boilers and pressure vessels
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Petrochemical reactors
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Oil and gas storage tanks
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Heat exchangers and steam generators
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Power plant pressure systems
Due to its high mechanical performance and stable welding characteristics, P420N is an excellent choice for critical equipment operating under high pressure and temperature.
