Alloy 405，Monel 405 Foil，Shim，UNS N04405，EFORU

British Specs:，American Specs:AMS 4674 Bar and Forgings AMS 7234 QQ-N-281 MIL-N-894，German Specs:

### **Alloy 405 / Monel 405 Foil & Shim Stock (UNS N04405) - Product Introduction** **Overview** **Alloy 405** (Monel 405) is a free-machining nickel-copper alloy specifically engineered with controlled sulfur content to provide superior machinability while maintaining good corrosion resistance. **Monel 405 Foil and Shim Stock** represents the thin-gauge product form of this specialized alloy, offering exceptional precision in thickness control combined with enhanced machining characteristics for applications requiring minimal material thickness and reliable performance in corrosive environments. The UNS **N04405** designation ensures consistent material quality with optimized machining performance. Available in ultra-thin gauges, Monel 405 foil and shim stock maintain the alloy's characteristic properties while providing the formability and precision required for specialized industrial applications where space constraints and corrosion resistance are critical factors. --- ### **Chemical Composition** | 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)** | 0.025 - 0.060 | **Key Feature:** The controlled sulfur addition (0.025-0.060%) significantly improves machinability by promoting the formation of manganese sulfide inclusions that act as chip breakers, providing approximately 50% better machining characteristics compared to standard Monel 400. --- ### **Physical Properties** | 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 405 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 | **Machinability Rating:** 30% (Compared to 20% for Monel 400) --- ### **International Standards** | Standard Organization | Standard Number | Specification | | :--- | :--- | :--- | | **ASTM** | ASTM B127 | Standard Specification for Nickel-Copper Alloy Plate, Sheet, and Strip | | **ASME** | SB-127 | Boiler and Pressure Vessel Code | | **SAE** | AMS 4674 | Free-Machining Nickel-Copper Alloy | | **DIN** | 2.4362 | NiCu30FeS | | **EN** | EN 2.4362 | Nickel-Copper Alloy Foil/Shim | | **UNS** | N04405 | Alloy 405 | --- ### **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 - **Tolerance:** Precision rolled to ±10% of nominal thickness **Electronics & Electrical Applications:** - RFI/EMI shielding components - Battery contacts and current collectors - Flexible circuit substrates - Electrical shunts and contacts - Connector components - Semiconductor processing fixtures **Industrial Applications:** - Precision gaskets and seals for corrosive environments - Spacers and shims in chemical equipment - High-temperature gasketing applications - Vibration damping materials - Thermal management interfaces - Precision washers and spacers **Aerospace & Defense:** - Thin shielding applications - Precision shims in aircraft engines - Missile component shielding - Avionics protection layers - Military electronics packaging **Chemical Processing:** - Diaphragms for chemical equipment - Thin lining for small vessels - Corrosion-resistant barriers - Filter elements and supports - Sensor protection layers --- ### **Machining & Fabrication Advantages** **Superior Machinability Characteristics:** - **Chip Formation:** Produces small, broken chips instead of long, continuous chips - **Stamping Performance:** Excellent blanking and piercing characteristics - **Tool Life:** Extended tool life compared to Monel 400 - **Surface Finish:** Superior surface quality in machining operations - **Precision Capability:** Excellent for close-tolerance applications **Recommended Fabrication Parameters:** - **Blank Clearance:** 5-8% of material thickness - **Punch-Die Clearance:** 0.0002-0.0005 inches - **Stamping Speed:** Moderate to high speeds acceptable - **Tool Material:** Carbide tools recommended for long production runs --- ### **Key Advantages** - **Enhanced Machinability:** 50% better machining characteristics than Monel 400 - **Precision Thickness Control:** Consistent gauge maintenance for critical applications - **Excellent Formability:** Can be easily stamped, blanked, and formed into complex shapes - **Good Corrosion Resistance:** Maintains resistance to seawater, acids, and alkaline solutions - **Non-Magnetic Characteristics:** Essential for electronic and sensitive instrumentation applications - **High Temperature Capability:** Maintains integrity at elevated temperatures up to 400°C - **Excellent Surface Quality:** Smooth, uniform surfaces for precision applications - **Economic Production:** Reduced machining costs for complex components **Special Considerations for Foil/Shim Applications:** - Available with protective interleaving for delicate surfaces - Custom slitting services for specific width requirements - Precision tension leveling for superior flatness - Special surface finishes upon request (bright annealed, matte, etc.) - Custom annealing treatments for specific application requirements --- ### **Quality Assurance** **Testing and Certification:** - Chemical analysis certification - Mechanical testing verification - Dimensional accuracy certification - Surface quality inspection - Flatness and straightness verification - Edge condition examination **Special Testing Available:** - Corrosion testing per ASTM standards - Surface roughness measurement - Thickness uniformity verification - Mechanical property testing at temperature Monel 405 Foil and Shim Stock (UNS N04405) provides the unique combination of extreme thinness, precision dimensional control, enhanced machinability, and good corrosion resistance for demanding applications in electronics, aerospace, chemical processing, and specialized industrial sectors. Its ability to maintain Monel 405's characteristic properties in ultra-thin configurations makes it invaluable for applications where space and weight constraints must be balanced with superior machining characteristics and adequate 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 1687 gallon liquid totes Special package is available on request.