UNS N04400 Alloy Steel Plate Supplier | Specifications, Equivalent Materials, and Price

UNS N04400 alloy steel plate, also known as Monel 400, is supplied by Gangsteel, a leading stainless steel supplier in China. Renowned for its exceptional UNS N04400 corrosion resistance in seawater, hydrofluoric acid, and alkaline environments, this nickel-copper alloy is ideal for marine, chemical processing, and oil/gas applications.

Gangsteel offers UNS N04400 plate, sheet, bar, and custom components, meeting ASTM B127 and ASME SB-127 standards for plate/sheet, and ASTM B164 for bar. This page provides detailed insights into the UNS N04400 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive UNS N04400 price per kg. Explore our nickel alloy steel grades for related alloys like UNS N06625, UNS N05500, and UNS N08825.

1. What is UNS N04400?

UNS N04400, or Monel 400, is a nickel-copper alloy with approximately 63% nickel and 28-34% copper, designed for superior resistance to seawater, hydrofluoric acid, and sulfuric acid in reducing conditions. Its excellent toughness and corrosion resistance make UNS N04400 material ideal for marine equipment, chemical processing vessels, and oil/gas components. Compared to UNS N05500, UNS N04400 offers better ductility but lower strength due to the absence of precipitation hardening.

Gangsteel’s UNS N04400 alloy steel plate is tailored for aggressive corrosive environments, providing a robust alternative to nickel alloy steel grades like UNS N08020 and UNS N06985.

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2. UNS N04400 Chemical Composition

The UNS N04400 chemical composition, compliant with ASTM B127 for plate/sheet, is optimized for corrosion resistance in marine and acidic environments.

Note: The high nickel and copper content enhance UNS N04400 corrosion resistance in seawater and hydrofluoric acid, outperforming UNS N04400 in non-oxidizing environments compared to UNS N06625.

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3. UNS N04400 Mechanical Properties

The UNS N04400 mechanical properties, tested per ASTM B127, offer excellent ductility and toughness, making UNS N04400 alloy steel plate suitable for marine and chemical applications.

Note: Annealing at 1400-1800°F (760-982°C) optimizes Monel 400 mechanical properties. Contact Gangsteel for a detailed UNS N04400 technical data sheet.

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4. UNS N04400 Allowable Stress

The allowable stress values for UNS N04400, per ASME BPVC Section II, Part D, ensure safe design in marine and chemical processing applications.

Note: These values ensure UNS N04400 material performs reliably in marine equipment and chemical processing under elevated temperatures.

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5. UNS N04400 Equivalent Materials

UNS N04400aligns with international standards for global compatibility.

Note: UNS N04400 equivalent grades comply with ASTM B127 for plate/sheet and ASTM B164 for bar, offering interchangeability with UNS N05500 in certain marine applications.

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6. UNS N04400 vs UNS N05500, UNS N06625, and SS316

Comparing UNS N04400 to UNS N05500, UNS N06625, and SS316 aids in material selection:

• UNS N04400 vs UNS N05500: UNS N04400 offers better ductility, while UNS N05500 provides higher strength due to precipitation hardening.
• UNS N04400 vs UNS N06625: UNS N06625 excels in high-temperature and oxidizing environments, while UNS N04400 is optimized for seawater and hydrofluoric acid.
• UNS N04400 vs SS316: UNS N04400 outperforms SS316 in seawater and acidic environments but is more expensive.

Conclusion: Choose UNS N04400 alloy steel plate for seawater and hydrofluoric acid applications, UNS N05500 for high-strength marine uses, UNS N06625 for high-temperature applications, or SS316 for general corrosion resistance.

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7. UNS N04400 Specifications

Gangsteel offers UNS N04400 alloy steel plate, sheet, bar, and custom components with a wide range of specifications:

7.1 Plate and Sheet

• Thickness: 0.5 mm to 100 mm (plate), 0.1 mm to 6 mm (sheet)
• Width: 1000 mm to 3000 mm
• Length: 2000 mm to 12000 mm (or coiled for sheet)
• Surface Finish: Hot-rolled, cold-rolled, annealed, pickled, 2B, No.1, or customized
• Standards: ASTM B127, ASME SB-127
• Applications: UNS N04400 plate for marine equipment, Monel 400 sheet for chemical processing

7.2 Bar

• Diameter: 6 mm to 500 mm
• Length: Up to 12000 mm
• Finish: Hot-rolled, cold-drawn, centerless ground
• Standards: ASTM B164, ASME SB-164
• Applications: UNS N04400 bar for fittings and fasteners

7.3 Custom Components

• Types: Flanges (ASME B16.5), fittings, CNC-machined parts
• Tolerances: ±0.05 mm for precision components
• Applications: Tailored solutions for marine and chemical industries

Note: Custom sizes and heat treatments (e.g., annealing at 760-982°C) are available. Contact Gangsteel for bespoke UNS N04400 material specifications.

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8. UNS N04400 Applications

UNS N04400is widely used in industries requiring robust corrosion resistance. Key UNS N04400 applications include:

• Marine: UNS N04400 alloy steel plate for shipbuilding and seawater piping.
• Chemical Processing: Monel 400 plate for hydrofluoric acid and sulfuric acid equipment.
• Oil and Gas: UNS N04400 bar for valves and fittings in corrosive environments.
• Heat Exchangers: UNS N04400 sheet for seawater-cooled systems.
• Aerospace: Components for fuel and hydraulic systems.

Note: Compared to UNS N06985, UNS N04400 excels in seawater and hydrofluoric acid but is less suited for phosphoric acid.

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9. UNS N04400 Price per KG

The UNS N04400 price per kg ranges from USD 30-45 per kg (FOB), influenced by:

• Alloy Content: High nickel (≥63%) and copper (28-34%) increase costs compared to UNS N08020.
• Market Demand: High demand in marine and chemical processing drives Monel 400 price.
• Product Form: UNS N04400 alloy steel plate may cost more than sheet due to processing.
• Global Supply Chain: Freight and availability affect UNS N04400 cost.

For precise UNS N04400 price per kg quotes or bulk discounts, contact Gangsteel.

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10. Related Alloy Steel Grades

Gangsteel offers a diverse range of nickel alloy steel grades alongside UNS N04400, suitable for complementary applications:

• UNS N05500: High strength for marine applications.
• UNS N06625: High strength for aerospace and nuclear applications.
• UNS N08825: Corrosion resistance for oil and gas.
• UNS N08020: Cost-effective for sulfuric acid applications.
• UNS N06985: Corrosion resistance for phosphoric acid applications.
• UNS N10675: Superior resistance to hydrochloric acid.
• UNS N06030: Superior resistance to phosphoric acid.
• UNS N06200: Superior resistance to sulfuric acid.
• UNS N10276: Broad resistance to reducing and oxidizing acids.
• UNS N06022: Superior resistance to oxidizing acids.
• UNS N06690: Corrosion resistance for nuclear applications.
• UNS N07718: High strength for aerospace.
• UNS N07750: Creep resistance for springs.
• UNS N06002: High-temperature strength for turbines.
• UNS N06075: High-temperature corrosion resistance.
• UNS N07080: High strength for aerospace.
• UNS N07263: High-temperature strength for turbines.

Note: These alloys complement UNS N04400 alloy steel plate in marine, chemical, and high-temperature applications. Contact Gangsteel for a full catalog.

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11. Why Choose Gangsteel?

• Quality Assurance: All UNS N04400 alloy steel plate products meet ASTM B127 and ASME SB-127 standards, with EN 10204 3.1/3.2 certificates.
• Fast Delivery: Standard orders shipped in 7-15 days, with expedited options for urgent projects.
• Customization: Precision cutting (CNC, laser, waterjet), welding, and heat treatments tailored to your needs.
• Global Supply: Serving clients in Saudi Arabia, UAE, India, Europe, and beyond.
• Extensive Inventory: Wide range of nickel alloy steel grades, including UNS N06625 and UNS N05500.

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12. Conclusion

UNS N04400 alloy steel platefrom Gangsteel delivers exceptional corrosion resistance for seawater and hydrofluoric acid environments, ideal for marine and chemical processing applications. With high nickel and copper, UNS N04400 material offers superior ductility compared to UNS N05500, supported by versatile specifications (0.5-100 mm thickness, up to 3000 mm width) and equivalent grades (W.Nr. 2.4360, EN NiCu30Fe). As a trusted stainless steel supplier in China, Gangsteel provides high-quality UNS N04400 plate, sheet, and bar at competitive prices (USD 30-45/kg).

Contact Gangsteeltoday for the latest UNS N04400 price per kg or to request a detailed Monel 400 technical data sheet. Explore our nickel alloy steel grades for customized solutions to meet your project demands!