Alloy 401,Monel 401 Wire,,E FORU

British Specs:，American Specs:，German Specs:

**Technical Datasheet: Monel® 401 Wire (UNS N04401)** --- ### **Overview** Monel® 401 Wire (UNS N04401) is a nickel-copper alloy wire product specifically engineered for applications requiring controlled thermal expansion characteristics and excellent electrical conductivity. This wire form maintains the unique properties of Monel 401 alloy while providing enhanced fabricability for specialized electronic, electrical, and industrial applications. --- ### **Chemical Composition (Weight %)** | Element | Content (%) | Role | |---------|-------------|------| | Nickel (Ni) | 40.0-45.0 | Base element, provides matrix structure | | Copper (Cu) | Balance (~52-57) | Electrical conductivity, corrosion resistance | | Iron (Fe) | 1.0-2.0 | Strength enhancement | | Manganese (Mn) | 1.5-2.5 | Deoxidizer, improves hot workability | | Silicon (Si) | 0.1-0.5 | Deoxidizer | | Carbon (C) | 0.1-0.25 | Strength enhancement | | Sulfur (S) | ≤0.015 | Controlled impurity | | Magnesium (Mg) | 0.05-0.20 | Desulfurization, grain refinement | --- ### **Physical Properties** | Property | Value | |----------|-------| | Density | 8.83 g/cm³ (0.319 lb/in³) | | Melting Range | 1300-1350°C (2370-2460°F) | | Thermal Conductivity | 25.2 W/m·K (at 20°C) | | Coefficient of Thermal Expansion | 14.5 μm/m·°C (20-100°C) | | Specific Heat Capacity | 440 J/kg·K | | Electrical Resistivity | 0.49 μΩ·m | | Modulus of Elasticity | 179 GPa (26 × 10⁶ psi) | | Magnetic Permeability | <1.005 (slightly magnetic when cold worked) | --- ### **Mechanical Properties** **Annealed Condition:** - **Tensile Strength**: 480-550 MPa (70-80 ksi) - **Yield Strength (0.2% Offset)**: 170-240 MPa (25-35 ksi) - **Elongation**: 35-45% - **Reduction of Area**: 50-60% - **Hardness**: HRB 65-75 **Cold Drawn Condition:** - **Tensile Strength**: 620-690 MPa (90-100 ksi) - **Yield Strength**: 480-550 MPa (70-80 ksi) - **Elongation**: 15-25% - **Hardness**: HRB 85-95 --- ### **Wire Specifications** **Available Forms:** - Spooled wire (0.1-5.0 mm diameter) - Straight lengths (1.0-10.0 mm diameter) - Cut pieces and special shapes **Standard Sizes:** - Fine Wire: 0.1-1.0 mm diameter - Medium Wire: 1.0-3.0 mm diameter - Heavy Wire: 3.0-10.0 mm diameter **Surface Finish:** - Bright finish - Clean and scale-free - Special coatings available --- ### **Product Applications** **Electronic & Electrical Applications:** - Lead frames and connectors - Resistance welding electrodes - Electrical contacts and springs - Semiconductor packaging components - Vacuum tube parts - Connector pins **Glass-to-Metal Seals:** - Hermetic seal terminals - Electronic package feedthroughs - Transformer bushings - Capacitor seals - Instrumentation seals **Industrial Components:** - Wire forms and shapes - Fasteners and springs - Screening and mesh - Chemical processing equipment - Marine components **Specialized Applications:** - Thermocouple components - Cryogenic instrument parts - Aerospace electronic components - Medical device components - Research apparatus --- ### **Fabrication Characteristics** **Wire Drawing:** - Excellent drawability in annealed condition - Multiple intermediate anneals may be required - Good surface quality maintained - Consistent mechanical properties **Forming and Bending:** - Excellent formability in annealed condition - Good springback characteristics - Suitable for complex wire forms - Age after forming for maximum properties **Welding:** - Good weldability using GTAW process - Suitable for resistance welding - Use matching filler metals - Pre-heat generally not required **Machining:** - Good machinability in annealed condition - Use positive rake angles and sharp tools - Recommended cutting speeds: 20-35 m/min - Sulfur-free cutting fluids recommended --- ### **International Standards** | Standard Organization | Standard Number | Description | |----------------------|-----------------|-------------| | **ASTM** | B164 | Standard Specification for Nickel-Copper Alloy Rod, Bar, and Wire | | **ASME** | SB-164 | Code-approved version | | **SAE** | AMS 7232 | Electronic Components, Glass Sealing Alloy | | **UNS** | N04401 | Unified Numbering System | | **DIN** | 2.4360 | Material Number 2.4360 | | **ISO** | 9724 | Nickel alloy wire for general purposes | --- ### **Quality Assurance** - Chemical composition certification - Mechanical property testing - Surface quality inspection - Dimensional verification - Heat treatment certification - Spooling quality inspection - EN 10204 3.1/3.2 certification available --- ### **Packaging Options** - Plastic-spooled wire - Wooden-spooled wire - Coil packs - Straight lengths in bundles - Custom packaging available --- ### **Key Advantages** 1. **Controlled thermal expansion** for precision applications 2. **Excellent electrical conductivity** for electronic components 3. **Good corrosion resistance** in various environments 4. **Superior fabricability** for complex wire forms 5. **Reliable performance** in specialized applications --- **Notes:** - "Monel" is a registered trademark of Special Metals Corporation - Store wire in clean, dry conditions - Handle with care to prevent surface damage - Consult technical experts for specific application requirements *For detailed technical assistance and application engineering support, contact materials engineering specialists.*

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 2936 gallon liquid totes Special package is available on request.