Alloy 401,Monel 401 Plate,,E FORU

British Specs:，American Specs:，German Specs:

**Technical Datasheet: Monel® 401 Plate (UNS N04401)** --- ### **Overview** Monel® 401 Plate (UNS N04401) is a nickel-copper alloy plate product specifically designed for applications requiring controlled thermal expansion characteristics and excellent electrical conductivity. This plate material offers unique properties that make it particularly suitable for electronic, electrical, and specialized industrial applications where dimensional stability and reliable performance are 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 Worked Condition:** - **Tensile Strength**: 620-690 MPa (90-100 ksi) - **Yield Strength**: 480-550 MPa (70-80 ksi) - **Elongation**: 15-25% - **Hardness**: HRB 85-95 --- ### **Heat Treatment** - **Annealing Temperature**: 870-980°C (1600-1800°F) - **Soaking Time**: 30 minutes per inch of thickness - **Cooling**: Rapid air cool or water quench - **Stress Relieving**: 480-650°C (900-1200°F) when required --- ### **Product Applications** **Electronic & Electrical Applications:** - Lead frame substrates - Electronic package bases - Connector components - Semiconductor manufacturing equipment - Vacuum chamber components - Electrical insulation supports **Industrial Applications:** - Chemical processing equipment - Marine engineering components - Heat exchanger plates - 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 - Precision instrument bases --- ### **Fabrication Characteristics** **Machining:** - Good machinability rating - Recommended cutting speeds: 20-35 m/min (65-115 SFM) - Use positive rake angles and sharp tools - Suitable for milling, drilling, and turning operations - Good surface finish achievable **Welding:** - Excellent weldability using common processes - GTAW (TIG) and GMAW (MIG) recommended - Use matching filler metals - Pre-heat generally not required - Post-weld heat treatment optional **Forming:** - Good cold and hot working characteristics - Hot working temperature: 850-1150°C (1560-2100°F) - Cold forming requires intermediate annealing - Suitable for bending, rolling, and pressing operations --- ### **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 plate specifications | --- ### **Available Specifications** **Plate Dimensions:** - **Thickness**: 5 mm to 100 mm (0.187" to 4") - **Width**: 1000 mm to 2000 mm (39" to 78") - **Length**: 2000 mm to 6000 mm (78" to 236") **Surface Finish:** - Hot rolled, annealed, and pickled - Cold rolled, annealed, and pickled - Ground finish available - Polished finish (upon request) **Tolerances:** - Thickness tolerance per ASTM B127 - Flatness: Standard and precision grades available - Width and length tolerances to customer requirements --- ### **Quality Assurance** - Complete material traceability - Chemical composition certification - Mechanical property testing - Ultrasonic testing available - Dimensional verification - Heat treatment certification - EN 10204 3.1/3.2 certification 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 component manufacturing 5. **Reliable performance** in specialized industrial applications --- **Notes:** - "Monel" is a registered trademark of Special Metals Corporation - Store plates 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 2929 gallon liquid totes Special package is available on request.