Why Choose P460NH Pressure Vessel Steel?
If you're seeking high-strength steel for pressure vessels in high-pressure and high-temperature environments, P460NH is an excellent choice. It provides the ideal combination of strength and toughness for demanding applications. Its excellent weldability ensures easier fabrication and repairs, helping to reduce downtime and costs. P460NH is known for its resistance to heat and pressure, offering enhanced safety and durability. It's versatile, with subgrades like P460NL1 and P460NL2 for low-temperature conditions. If your project requires greater corrosion resistance or higher toughness, consider alternatives like P355NH or 16Mo3 for specific applications. Choosing P460NH gives you a trusted, high-performance material used in industries such as energy, petrochemical, and manufacturing.
P460NH is a high-performance material that requires precision. Because of its higher strength, it is stiffer than P355NH, but it remains highly workable for those equipped to handle fine-grain steels. It is supplied as a normalized plate, making it very stable during heavy machining and thermal cutting.
Decoding the Name:
P: Mandatory for any pressure-retaining part in European projects.
460: High yield strength ($460$ MPa), requiring high-strength welding electrodes.
N: Normalized state, which minimizes the risk of warping during the welding process.
H: Rated for elevated temperature service.
Key Comparison: P460NH is often compared to the American ASTM A537 Class 2 or high-end ASTM A612. While these American grades are similar, P460NH's compliance with EN 10028-3 ensures it fits seamlessly into Eurocode-based engineering designs and 3.1/3.2 certification requirements.
Key Characteristics:
Weldability: Can be welded with all standard methods (SMAW, GMAW, SAW), provided the correct high-yield filler metals are used.
Formability: Excellent cold and hot formability, allowing for the pressing of heavy-walled dished ends.
Thermal Stability: Does not lose its structural integrity when exposed to industrial heat cycles up to 400°C.
Common Applications: Fabricating massive dished ends (tank heads), high-pressure compressor housings, and welded flanges for extreme service.
What is the chemical composition of P460NH?
P460NH is a high-strength, fine-grain pressure vessel steel (EN 10028-3) primarily composed of iron with controlled levels of carbon (max 0.2%), silicon (max 0.6%), manganese (1.0-1.7%), phosphorus (max 0.03%), sulfur (max 0.02%), chromium (max 0.3%), molybdenum (max 0.1%), nickel (max 0.8%), and trace elements like Niobium, Titanium, Vanadium, Aluminum, and Copper, offering excellent weldability and toughness for high-temperature applications.
What is the properties of P460NH?
P460NH is a high-strength, weldable fine-grain pressure vessel steel (EN 10028-3) known for its good toughness and weldability at elevated temperatures (around 400°C), featuring a minimum yield strength of 460 MPa, making it ideal for boilers, heat exchangers, and other high-pressure equipment, with excellent performance in harsh environments like offshore platforms due to its durability and resistance to high pressures.
Is P460NH high strength steel ?
Yes, P460NH is a high-strength steel, specifically a fine-grain, low-alloy steel designed for pressure vessels, characterized by a minimum yield strength of 460 MPa (megapascals) and good toughness, weldability, and performance at elevated temperatures. It's used in demanding applications like boilers, heat exchangers, and chemical reactors.
Equivalent grades of steel P460NH (1.8935)
| EU EN |
Germany DIN,WNr |
China GB |
Kazakhstan GOST |
| P460NH |
WStE460 |
Q460R |
18G2 |
Chemical Requirements
| C | Si | Mn | P | S | Al total | N | Cr | Cu | Mo | Nb | Ni | Ti | V | Nb+Ti+V |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0.20 | 0.60 | 1.10 – 1.70 | 0.025 | 0.015 | 0.020 min | 0.025 | 0.30 | 0.70 | 0.10 | 0.05 | 0.80 | 0.03 | 0.20 | 0.22 |
Tensile Requirements
| Product thickness | Yield strength MPA | Tensile strength MPA | Elongation A% |
|---|---|---|---|
| up to 16mm | 460 min | 570 – 730 | 17 min |
| 16mm to 40mm | 445 min | 570 – 720 | 17 min |
| over 40mm to 60mm | 430 min | 570 to 720 | 17 min |
| over 60mm to 100mm | 400 min | 540 to 710 | 17 min |
Impact energy values for the normalised condition
| -20°C | 0°C | +20°C | |
|---|---|---|---|
| Transverse | 30 J min | 40 J min | 50 J min |
| Lonitudinal | 45 J min | 65 J min | 75 J min |
1What is the machinability of P460NH?
P460NH steel (EN 10028-3) is a high-strength, fine-grain pressure vessel steel with moderate to fair machinability, often considered around 60-70% of free-cutting steels like B1112, generally machined in its normalized condition at speeds around 110 ft/min, though specific results depend on tool, coolant, and machining conditions, with focus on its good weldability and toughness over easy cutting.
2What is the difference between P460NH and P460M?
P460NH and P460M are both high-strength, fine-grained steels for pressure vessels and boilers, but P460NH is typically normalized (N) for better toughness at lower temperatures, while P460M is thermomechanically rolled (M) for good weldability, with the key distinction often being their delivery condition and suitability for specific temperature ranges, with P460M offering good high-temp strength and toughness and P460NH providing enhanced low-temp properties due to its normalized state.
3What Is The Typical Lead Time For Delivery Of P460NH Steel Plates After Heat Treatment?
The typical lead time for P460NH steel plates after heat treatment generally ranges from 7 to 20 days, but this can vary based on order size, thickness, specific processing needs (like cutting or bending), supplier stock, and logistics; expect longer for larger or customized orders, and shorter if the plates are readily available in standard sizes.
4Can P460NH Be Customized For Low-Temperature Applications?
Yes, P460NH steel can be customized for low-temperature use by specifying subgrades like P460NL1 (for low temps, tested at -40°C) or P460NL2 (for very low temps, tested at -50°C), which offer enhanced toughness, with available certifications including EN 10204 3.1/3.2 and NACE (for sour service), ensuring suitability for demanding cryogenic or cold-weather pressure vessel applications.
5What is P460NH material ?
P460NH is a high-strength, normalized, fine-grain steel (alloy steel) used for boilers, pressure vessels, and heat exchangers, defined by European standard EN 10028-3. Its designation signifies a minimum yield strength of 460 MPa (P460) and specified properties for elevated temperatures (NH). Key features include excellent weldability, good toughness, and resistance to high pressures and temperatures, making it ideal for heavy-duty industrial applications.
6What temperature is P460NH?
P460NH is a high-strength, weldable steel used in pressure vessels, with an application temperature of approximately 400°C (750°F) for its creep resistance, but its mechanical properties (like yield strength) change significantly with temperature, dropping as temperatures rise above room conditions, making it suitable for various elevated temperature services up to its limits.
7What is the hardness of P460NH?
P460NH steel, a normalized fine-grain pressure vessel steel (EN 10028-3), has a typical Brinell hardness (HBW) range, often around 200 HBW, though specific values depend on the heat treatment and plate thickness, providing good toughness and weldability for boilers and pressure vessels, with the "460" indicating its minimum yield strength of 460 MPa.
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