Alloy 404,Monel 404 Rod,,E FORU

British Specs:，American Specs:，German Specs:

**Technical Datasheet: Monel® 404 Rod (UNS N04404)** --- ### **Overview** Monel® 404 Rod (UNS N04404) is a nickel-copper alloy rod product specifically engineered for electronic and electrical applications requiring precise thermal expansion control and excellent brazing characteristics. This wrought rod form maintains the alloy's unique properties while providing enhanced machinability for specialized components in glass-to-metal sealing and electronic applications. --- ### **Chemical Composition (Weight %)** | Element | Content (%) | Role | |---------|-------------|------| | Nickel (Ni) | 52.0-57.0 | Base element, provides matrix structure | | Copper (Cu) | Balance (~41-45) | Electrical conductivity, strength | | Iron (Fe) | ≤0.50 | Controlled residual | | 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% - **Reduction of Area**: 45-55% - **Hardness**: HRB 60-75 **Cold Drawn Condition:** - **Tensile Strength**: 600-690 MPa (87-100 ksi) - **Yield Strength**: 480-550 MPa (70-80 ksi) - **Elongation**: 15-25% - **Hardness**: HRB 80-95 --- ### **Special Characteristics** **Thermal Properties:** - Controlled thermal expansion coefficient - Matches thermal expansion of many glass types - Ideal for glass-to-metal sealing applications - Stable performance across temperature ranges **Electrical Properties:** - High electrical conductivity - Low contact resistance - Excellent for electronic applications --- ### **Product Applications** **Electronic & Electrical Components:** - Glass-to-metal seal terminals - Lead frame components - Electronic connector pins - Semiconductor support rods - Vacuum tube components - Relay and switch parts **Telecommunications Equipment:** - Waveguide components - RF connector rods - Microwave device parts - Communication equipment shafts **Industrial Applications:** - Valve stems and shafts - Pump rods - Chemical processing equipment - Marine component shafts - Instrumentation parts **Specialized Applications:** - Cryogenic instrument components - Aerospace electronic parts - Medical device components - Precision mechanism shafts - Research apparatus components --- ### **Fabrication Characteristics** **Machining:** - Excellent machinability - Recommended cutting speeds: 25-40 m/min (80-130 SFM) - Use sharp tools with positive rake angles - Suitable for automatic screw machine operations - Good surface finish achievable **Welding:** - Good weldability using GTAW process - Suitable for resistance welding - Use matching filler materials - Post-weld heat treatment generally not required **Heat Treatment:** - **Annealing Temperature**: 870-980°C (1600-1800°F) - **Soaking Time**: 30 minutes per inch of diameter - **Cooling**: Rapid air cool or water quench - **Stress Relieving**: 425-540°C (800-1000°F) when required --- ### **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 for pressure applications | | **SAE** | AMS 4674 | Nickel Alloy 404 Rod and Bar | | **UNS** | N04404 | Unified Numbering System | | **DIN** | 2.4360 | Material Number (similar category) | | **ISO** | 9724 | Nickel alloy rods for general purposes | --- ### **Rod Specifications** **Available Sizes:** - Diameters: 3 mm to 200 mm (0.125" to 8") - Lengths: 3-6 meters (10-20 feet) standard - Custom sizes and lengths available **Surface Conditions:** - Centerless ground - Turned and polished - Hot finished - Black surface **Tolerance Standards:** - Standard tolerances per ASTM B164 - Special precision tolerances available - Straightness: 1.5 mm per meter maximum --- ### **Quality Assurance** - Complete material traceability - Chemical composition certification - Mechanical property testing - Dimensional verification - Surface quality inspection - Heat treatment certification - EN 10204 3.1/3.2 certification available --- ### **Key Advantages** 1. **Precision thermal expansion control** for glass sealing applications 2. **Excellent electrical conductivity** for electronic components 3. **Good corrosion resistance** in various environments 4. **Superior machinability** for complex component manufacturing 5. **Reliable performance** in specialized industrial applications --- **Notes:** - "Monel" is a registered trademark of Special Metals Corporation - Store rods 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 2938 gallon liquid totes Special package is available on request.