Alloy 401,Monel 401 Strip,,E FORU

British Specs:，American Specs:，German Specs:

**Technical Datasheet: Monel® 401 Strip (UNS N04401)** --- ### **Overview** Monel® 401 Strip (UNS N04401) is a precision nickel-copper alloy strip product engineered for applications requiring controlled thermal expansion characteristics and excellent electrical conductivity. This alloy strip offers unique thermal properties combined with good corrosion resistance, making it particularly suitable for electronic components, electrical applications, and precision instruments where dimensional stability is paramount. --- ### **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% - **Hardness**: HRB 65-75 **Cold Rolled Condition:** - **Tensile Strength**: 620-690 MPa (90-100 ksi) - **Yield Strength**: 480-550 MPa (70-80 ksi) - **Elongation**: 15-25% - **Hardness**: HRB 85-95 --- ### **Strip Specifications** **Available Dimensions:** - **Thickness**: 0.05 mm to 2.0 mm (0.002" to 0.078") - **Width**: 2 mm to 300 mm (0.078" to 12") - **Length**: Coils or straight lengths available **Tolerance Standards:** - **Thickness**: ±0.005 mm for precision grades - **Width**: ±0.1 mm for slit edges - **Camber**: 1 mm per meter maximum **Surface Finish:** - Bright annealed - Cold rolled finish - Special polished surfaces available - Edge condition: Slit, rolled, or deburred --- ### **Product Applications** **Electronic Components:** - Lead frames and connectors - Semiconductor packaging components - Electronic connector parts - Switch contacts - Relay components - Circuit breaker parts **Electrical Applications:** - Resistance welding electrodes - Electrical contacts - Bus bar components - Battery connectors - Power distribution parts **Precision Instruments:** - Glass-to-metal seals - Thermocouple components - Instrument springs - Precision mechanical parts - Watch and clock components **Industrial Applications:** - Chemical processing equipment parts - Marine engineering components - Heat exchanger components - Pump and valve parts --- ### **Fabrication Characteristics** **Stamping & Blanking:** - Excellent for precision stamping operations - Clean blanking characteristics - Minimal burr formation - Suitable for high-speed production - Good die life characteristics **Forming & Bending:** - Excellent cold forming properties - Predictable springback characteristics - Minimum bend radius: 1× thickness - Suitable for complex formed shapes **Welding:** - Good weldability using resistance welding - Suitable for laser and electron beam welding - Use matching filler materials - Pre-heat generally not required **Heat Treatment:** - **Annealing Temperature**: 870-980°C (1600-1800°F) - **Soaking Time**: 5-15 minutes - **Cooling**: Rapid air or water quench - **Stress Relieving**: 480-650°C (900-1200°F) --- ### **International Standards** | Standard Organization | Standard Number | Description | |----------------------|-----------------|-------------| | **ASTM** | B127 | Standard Specification for Nickel-Copper Alloy Strip | | **ASME** | SB-127 | Code-approved version | | **SAE** | AMS 7232 | Electronic Components, Glass Sealing Alloy | | **UNS** | N04401 | Unified Numbering System | | **DIN** | 2.4360 | Material Number 2.4360 | | **ISO** | 6208 | Nickel alloy strip specifications | --- ### **Quality Assurance** - Dimensional accuracy certification - Chemical composition verification - Mechanical property testing - Surface quality inspection - Edge condition verification - Heat treatment certification - EN 10204 3.1/3.2 certification available --- ### **Packaging Options** - Protective interleaved coils - Wooden or steel spools - Custom cut lengths - Vacuum sealed for sensitive applications --- ### **Key Advantages** 1. **Precision dimensional tolerances** for critical applications 2. **Controlled thermal expansion** matching glass and ceramics 3. **Excellent electrical conductivity** for electronic components 4. **Good corrosion resistance** in various environments 5. **Superior fabricability** for complex precision parts --- **Notes:** - "Monel" is a registered trademark of Special Metals Corporation - Store strips in clean, dry conditions - Handle with clean gloves to prevent contamination - Consult technical experts for specific application requirements *For detailed technical assistance and precision application engineering, 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 2931 gallon liquid totes Special package is available on request.