Alloy 404,Monel 404 Sheet,,E FORU

British Specs:，American Specs:，German Specs:

**Technical Datasheet: Monel® 404 Sheet (UNS N04404)** --- ### **Overview** Monel® 404 Sheet (UNS N04404) is a nickel-copper alloy sheet product specifically engineered for applications requiring controlled thermal expansion characteristics and excellent brazing properties. This alloy is particularly designed for electronic and electrical applications where dimensional stability, reliable performance in glass-to-metal sealing, and corrosion resistance are essential. --- ### **Chemical Composition (Weight %)** | Element | Content (%) | Role | |---------|-------------|------| | Nickel (Ni) | 52.0-57.0 | Base element, provides matrix structure | | Copper (Cu) | Balance (~41-45) | Electrical conductivity, corrosion resistance | | Iron (Fe) | ≤0.50 | Controlled residual element | | Manganese (Mn) | ≤0.10 | Minimized for specific thermal properties | | Silicon (Si) | ≤0.10 | Controlled residual | | Carbon (C) | ≤0.15 | Strength enhancement | | Sulfur (S) | ≤0.015 | Controlled impurity | | Magnesium (Mg) | ≤0.05 | Grain refinement | --- ### **Physical Properties** | Property | Value | |----------|-------| | Density | 8.91 g/cm³ (0.322 lb/in³) | | Melting Range | 1300-1350°C (2370-2460°F) | | Thermal Conductivity | 26.5 W/m·K (at 20°C) | | Coefficient of Thermal Expansion | 13.9 μm/m·°C (20-300°C) | | Specific Heat Capacity | 435 J/kg·K | | Electrical Resistivity | 0.45 μΩ·m | | Modulus of Elasticity | 175 GPa (25.4 × 10⁶ psi) | | Magnetic Permeability | <1.005 (essentially non-magnetic) | --- ### **Mechanical Properties** **Annealed Condition:** - **Tensile Strength**: 450-520 MPa (65-75 ksi) - **Yield Strength (0.2% Offset)**: 180-250 MPa (26-36 ksi) - **Elongation**: 35-45% - **Hardness**: HRB 60-75 **Cold Rolled Condition:** - **Tensile Strength**: 600-690 MPa (87-100 ksi) - **Yield Strength**: 480-550 MPa (70-80 ksi) - **Elongation**: 15-25% - **Hardness**: HRB 80-95 --- ### **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:** - Glass-to-metal seal bases and substrates - Lead frame components - Electronic connector parts - Semiconductor manufacturing equipment - Vacuum chamber walls - Electrical insulation supports - Circuit board mounting plates **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:** - Telecommunications equipment - Waveguide components - Aerospace electronic housings - Medical device components - Research apparatus - Precision instrument bases --- ### **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: 25-40 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 4674 | Nickel Alloy 404 Sheet and Strip | | **UNS** | N04404 | Unified Numbering System | | **DIN** | 2.4360 | Material Number (similar category) | | **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 glass-sealing 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 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 2943 gallon liquid totes Special package is available on request.