Alloy 400，Monel 400 Foil，Shim，UNS N04400，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA11，American Specs:AMS 4574 Tube AMS 4575 (Tube *) AMS 4675 Bar and Forgings AMS 4730 Wire AMS 4731 Wire and Ribbon AMS 4544 Sheet, Strip and Plate QQ-N-281 ASTM B164，German Specs:

### **Alloy 400 / Monel 400 Foil & Shim Stock (UNS N04400) - Product Introduction** **Overview** **Alloy 400** (commercially known as **Monel 400**) is a nickel-copper alloy renowned for its exceptional corrosion resistance in various aggressive environments. **Monel 400 Foil and Shim Stock** represents the thin-gauge product form of this superior alloy, offering the same excellent corrosion resistance in precision applications requiring minimal thickness and precise dimensional control. These products are engineered for applications where space constraints and corrosion resistance are critical factors. The UNS **N04400** designation ensures consistent material quality. Available in various thin gauges, Monel 400 foil and shim stock maintain the alloy's characteristic properties while providing the formability and precision required for specialized industrial applications. --- ### **Chemical Composition** The chemical composition maintains the same excellent corrosion resistance as other Monel 400 product forms. | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | 63.0 (Minimum) | | **Copper (Cu)** | 28.0 - 34.0 | | **Iron (Fe)** | 2.5 (Maximum) | | **Manganese (Mn)** | 2.0 (Maximum) | | **Carbon (C)** | 0.3 (Maximum) | | **Silicon (Si)** | 0.5 (Maximum) | | **Sulfur (S)** | 0.024 (Maximum) | **Note:** The balanced nickel-copper composition provides exceptional resistance to seawater, acids, and alkaline solutions, even in thin foil and shim applications. --- ### **Physical Properties** Monel 400 foil and shim exhibit consistent physical properties suitable for precision applications. | Property | Value | | :--- | :--- | | **Density** | 8.80 g/cm³ (0.318 lb/in³) | | **Melting Point** | 1350 °C (2460 °F) | | **Electrical Resistivity** | 51 μΩ·cm at 20°C | | **Thermal Conductivity** | 22 W/m·K at 20°C | | **Thermal Expansion Coefficient** | 13.9 μm/m·°C (20-100°C) | | **Magnetic Permeability** | Essentially non-magnetic | --- ### **Mechanical Properties** Typical mechanical properties for Monel 400 foil and shim stock: | Thickness Range | Temper | Tensile Strength | Yield Strength (0.2% Offset) | Elongation (%) | | :--- | :--- | :--- | :--- | :--- | | **0.001-0.010" (0.025-0.25mm)** | Annealed | 550-690 MPa (80-100 ksi) | 240-380 MPa (35-55 ksi) | 35-45 | | **0.001-0.010" (0.025-0.25mm)** | Hard | 620-860 MPa (90-125 ksi) | 480-760 MPa (70-110 ksi) | 5-15 | --- ### **International Standards** Monel 400 foil and shim comply with major international standards: | Standard Organization | Standard Number | Specification | | :--- | :--- | :--- | | **ASTM** | ASTM B127 | Standard Specification for Nickel-Copper Alloy Plate, Sheet, and Strip | | **ASTM** | ASTM B164 | Standard Specification for Nickel-Copper Alloy Rod, Bar, and Wire | | **ASME** | SB-127 | Boiler and Pressure Vessel Code | | **DIN** | 2.4360 | NiCu30Fe | | **EN** | EN 2.4360 | Nickel-Copper Alloy Foil/Shim | | **MIL** | MIL-N-894 | Military Specification | --- ### **Product Specifications & Applications** **Product Forms & Sizes:** - **Foil:** 0.001" to 0.005" (0.025mm to 0.127mm) thickness - **Shim Stock:** 0.002" to 0.010" (0.051mm to 0.254mm) thickness - **Standard Widths:** 6" to 24" (152mm to 610mm) - **Available Conditions:** Annealed, Hard, Half-Hard **Electronics & Electrical Applications:** - RFI/EMI shielding - Battery contacts and components - Flexible circuit substrates - Electrical shunts - Connector components - Semiconductor processing equipment **Industrial Applications:** - Gaskets and seals for corrosive environments - Spacers and shims in chemical equipment - High-temperature gasketing - Vibration damping materials - Thermal management applications - Precision washers **Aerospace & Defense:** - Thin shielding applications - Precision shims in aircraft engines - Missile component shielding - Avionics protection - Military electronics **Chemical Processing:** - Diaphragms for chemical equipment - Lining for small vessels - Corrosion-resistant barriers - Filter elements - Sensor protection --- ### **Key Advantages** - **Precision Thickness Control:** Consistent gauge maintenance for critical applications - **Superior Corrosion Resistance:** Excellent performance in seawater, acids, and alkaline solutions - **Excellent Formability:** Can be easily stamped, blanked, and formed into complex shapes - **Good Spring Properties:** Suitable for spring contacts and flexible components - **Non-Magnetic Characteristics:** Essential for electronic and sensitive instrumentation applications - **High Temperature Capability:** Maintains integrity at elevated temperatures - **Excellent Surface Quality:** Smooth, uniform surfaces for precision applications - **Weldability:** Can be welded using standard techniques including resistance welding **Special Considerations for Foil/Shim Applications:** - Available with protective interleaving for delicate surfaces - Custom slitting services available - Precision tension leveling for flatness - Special surface finishes upon request - Custom annealing treatments for specific applications Monel 400 Foil and Shim Stock (UNS N04400) provide the unique combination of extreme thinness, precision dimensional control, and excellent corrosion resistance for demanding applications in electronics, aerospace, chemical processing, and specialized industrial sectors. Their ability to maintain Monel 400's characteristic properties in ultra-thin configurations makes them invaluable for applications where space and weight constraints must be balanced with superior corrosion resistance.

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 1674 gallon liquid totes Special package is available on request.