Monel® 401 (UNS N04401) is a nickel-copper alloy specifically designed for applications requiring stable electrical resistivity and good corrosion resistance. Unlike standard nickel-copper alloys focused on mechanical strength, Monel 401 is optimized for precision electrical and electronic components.
1. Product Specifications & AvailabilityMonel® 401 (UNS N04401) is available in multiple forms to support manufacturing of electrical and electronic assemblies. Forms: Bar (Round), Flat Bar, Wire, Tube, Pipe, Sheet, Plate, Billet, Forgings. Certifications: ISO 9001 and AS9120 certified. Support: Stock lists and free samples available upon request.
Chemical Composition| Element | Content (%) |
|---|
| Nickel | 40 – 45 | | Copper | Remainder | | Manganese | 2.25 max | | Iron | 0.75 max | | Silicon | 0.25 max | | Cobalt | 0.25 max | | Carbon | 0.10 max | | Sulfur | 0.015 max |
Mechanical Properties (Annealed)| Property | Metric | Imperial |
|---|
| Tensile Strength | 441 MPa | 64 ksi | | Yield Strength | 134 MPa | 19 ksi |
2. Operating Conditions & Selection CriteriaMonel® 401 (UNS N04401) is selected primarily for its electrical performance and stability in mildly corrosive environments. Primary Function: Designed for electrical resistance components. Not intended for high-load structural applications. Corrosion Resistance: Provides good resistance to corrosion in freshwater, salt solutions, and various alkalies, ensuring longevity in electronic housings and contacts. Thermal & Mechanical Limits: Maintains ductility over a wide temperature range. Does not rely on heat treatment for strength; properties are controlled via cold working.
3. Fabrication & Material ComparisonAlloy 401 offers distinct advantages in manufacturing due to its excellent workability, differing from standard structural alloys. Fabrication Guidelines: Machining: Suitable for conventional machining. Water-based coolants recommended for high-speed turning or milling. Heavy lubricants advised for drilling, tapping, and broaching. Forming: Highly formable using standard cold-forming techniques. Heavy-duty lubricants are recommended. Good forgeability for hot and cold work. Welding: Good weldability using common methods including GTAW (TIG), SMAW (Stick), GMAW (MIG), and Submerged-Arc Welding. Heat Treatment: Annealing is performed at 760°C (1400°F) for one hour to relieve stress and soften after cold work. Does not respond to precipitation hardening.
Material Comparison: vs. Alloy 400: Alloy 400 is selected for general corrosion resistance and mechanical strength (pumps, valves, marine shafts). Monel 401 is selected specifically for electrical resistance components (resistors, bimetal contacts) where consistent electrical properties are required over mechanical load capacity.
Primary Applications:
Contact & SupportFor detailed specifications, pricing, or free samples of Alloy 401, contact ZYTC Alloy. Our team provides certified materials and technical support for electrical and electronic engineering projects. Contact Us:Email:daisy@zytcsteel.com WhatsApp/WeChat: +86 17335753350 |
