Alloy 401,Monel 401 Sheet,,E FORU

British Specs:，American Specs:，German Specs:

**Technical Datasheet: Monel® 401 Sheet (UNS N04401)** --- ### **Overview** Monel® 401 Sheet (UNS N04401) is a nickel-copper alloy sheet product specifically engineered for applications requiring precise thermal expansion control and excellent electrical conductivity. This sheet material combines unique thermal properties with good corrosion resistance, making it ideal for electronic, electrical, and specialized industrial applications where dimensional stability is critical. --- ### **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 --- ### **Sheet Specifications** **Available Dimensions:** - **Thickness**: 0.5 mm to 6.0 mm (0.020" to 0.250") - **Width**: 600 mm to 1500 mm (24" to 60") - **Length**: 1000 mm to 3000 mm (39" to 118") **Surface Finish:** - Cold rolled, annealed, and pickled - Bright annealed finish - No. 1, 2B, and 2D finishes - Special polished surfaces (upon request) **Tolerances:** - Thickness tolerance: ±5% - Width tolerance: ±1.5 mm - Length tolerance: ±3.0 mm --- ### **Product Applications** **Electronic & Electrical Components:** - Lead frame substrates - Electronic package bases - Connector components - Semiconductor manufacturing equipment - Vacuum chamber walls - Electrical insulation supports - Circuit board supports **Industrial Applications:** - Chemical processing equipment linings - Marine engineering components - Heat exchanger parts - Pump and valve components - Reaction vessel fabrication - Structural supports in corrosive environments **Specialized Applications:** - Glass-to-metal seal assemblies - Cryogenic equipment components - Aerospace electronic housings - Research apparatus - Nuclear instrumentation panels - Precision instrument bases - Laboratory equipment fabrication --- ### **Fabrication Characteristics** **Stamping & Blanking:** - Excellent for precision stamping operations - Clean blanking characteristics - Suitable for progressive die operations - Good dimensional stability - Predictable springback characteristics **Forming & Bending:** - Excellent cold forming characteristics - Minimum bend radius: 2× thickness - Suitable for deep drawing operations - Good springback control - Age after forming for maximum properties **Welding:** - Excellent weldability using GTAW process - Suitable for GMAW and resistance welding - Use matching filler metals - Pre-heat generally not required - Post-weld heat treatment optional **Machining:** - Good machinability in annealed condition - Use positive rake angles and sharp tools - Recommended cutting speeds: 20-35 m/min - Use sulfur-free cutting fluids --- ### **International Standards** | Standard Organization | Standard Number | Description | |----------------------|-----------------|-------------| | **ASTM** | B127 | Standard Specification for Nickel-Copper Alloy Plate, Sheet, and Strip | | **ASME** | SB-127 | Code-approved version for pressure applications | | **SAE** | AMS 7232 | Electronic Components, Glass Sealing Alloy | | **UNS** | N04401 | Unified Numbering System | | **DIN** | 2.4360 | Material Number 2.4360 | | **ISO** | 6208 | Nickel alloy sheet specifications | --- ### **Quality Assurance** - Complete material traceability - Chemical composition certification - Mechanical property testing - Surface quality inspection - Dimensional verification - Heat treatment certification - EN 10204 3.1/3.2 certification available --- ### **Key Advantages** 1. **Controlled thermal expansion** for precision electronic applications 2. **Excellent electrical conductivity** for component manufacturing 3. **Good corrosion resistance** in various environments 4. **Superior fabricability** for complex component manufacturing 5. **Reliable performance** in specialized industrial applications --- **Notes:** - "Monel" is a registered trademark of Special Metals Corporation - Store sheets in clean, dry conditions to prevent surface contamination - Special handling recommended for electronic grade material - 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 2930 gallon liquid totes Special package is available on request.