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MONEL 400（UNSN04400） COIL/STRIP
Nickel-Copper Alloy for Seawater, Hydrofluoric Acid & Reducing Media Service
MONEL 400 strip and coil (UNS N04400) delivers reliable corrosion resistance with good formability for stamped and formed parts, gaskets, bellows, flexible hoses, cladding, and marine components. Strength can be increased by cold working to meet temper requirements.
As a professional Chinese nickel-based alloy manufacturer, we supply MONEL 400 strip with stable chemistry, consistent mechanical properties, and flexible dimensional customization for global industrial users.
Typical supply range (custom sizes and tolerances available upon request):
Item | Range / Options | Notes |
Thickness | 0.05 – 3.0 mm | Define tolerance if critical (slitting applications). |
Width | 10 – 600 mm | Slitting available; define edge condition. |
Coil ID | 300 / 400 / 508 mm | Other IDs available by agreement. |
Coil OD | Up to 1500 mm | Depends on thickness and coil weight. |
Edge | Slit / Rounded | Deburring and edge conditioning available. |
Surface finish | 2B / BA / Polished | PVC protective film optional. |
Delivery condition | Annealed (standard) | Bright annealed option for thin strip. |
Dimension definition: THK × WIDTH × COIL.
• Excellent corrosion resistance in flowing seawater and brackish water
• Outstanding resistance to hydrofluoric acid (HF) across wide concentrations
• Good resistance to alkalis, neutral salts, and many reducing media
• Resistant to stress corrosion cracking in most fresh and industrial waters
• High strength and toughness; remains ductile at subzero temperatures
• Can be strengthened by cold working; good fabrication and weldability
Element | Ni | Cu | Fe | Mn | Si | C | S | Others |
MONEL 400 | ≥63.0 | 28.0–34.0 | ≤2.50 | ≤2.00 | ≤0.50 | ≤0.30 | ≤0.024 | — |
Alloy 400 is a Ni-Cu solid-solution alloy (non age-hardenable) that can only be strengthened by cold working; controlled chemistry supports stable corrosion performance.
Property | Value |
Tensile Strength (Rm) | ≈ 517–620 MPa (annealed) |
Yield Strength (Rp0.2) | ≈ 172–345 MPa (annealed) |
Elongation | ≈ 35–60 % |
Hardness | ≈ 60–80 HRB |
Mechanical properties may vary slightly with product form and heat treatment condition.
Standard System | Specification |
ASTM / ASME | ASTM B127 / ASME SB-127 |
EN | EN 10204 |
UNS | N04400 |
DIN | 2.4360 |
JIS | NW 4400 |
Item | Range |
Thickness | 0.05 – 3.0 mm |
Width | 10 – 600 mm |
Coil ID | 300 / 400 / 508 mm |
Surface Finish | 2B / BA / Polished |
Edge | Slit / Rounded |
Custom sizes, tight tolerances, and cut-to-length service are available upon request.
• Solution Annealed
• Bright Annealed / Pickled (where applicable)
• Gaskets, diaphragms, and formed corrosion-resistant parts
• Bellows and flexible hose components
• Cladding/liner strip for marine and chemical service
• Spring components (cold-worked tempers as required)
MONEL 400 can be readily fabricated and welded using standard nickel-alloy practices.
Common welding methods include:
• GTAW (TIG)
• GMAW (MIG)
• SMAW
Matching filler metals such as ERNiCrMo-2 are typically recommended.
• EN 10204 3.1 Material Test Certificate
• Chemical composition analysis
• Mechanical testing (tensile, hardness)
• PMI / XRF testing available
• Dimensional inspection
• Third-party inspection on request (BV, SGS, TUV, DNV)
• PVC protective film on surface (where applicable)
• Wooden pallets or export-grade crates
• Seaworthy packaging for long-distance shipment
• Global delivery by sea, air, or multimodal transport
• Professional nickel-based alloy manufacturer in China
• Stable raw material sourcing and melting control
• Wide stock and fast production cycle
• Competitive pricing for global projects
• Experience with international EPC, OEM, and distributors
For quotation or technical consultation, please provide:
• Required grade (MONEL 400)
• Thickness × Width × Coil ID/Weight
• Quantity
• Surface finish / delivery condition
• Application environment
Our technical team will respond with datasheets, pricing, and delivery schedule promptly.
