Alloy K500，Monel K500 Foil，Shim，UNS N05500，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA18，American Specs:AMS 4676 Bar and Forgings QQ-N-286，German Specs:WS 2.4375

### **Alloy K-500 / Monel K-500 Foil & Shim / UNS N05500 – Age-Hardenable Nickel-Copper Alloy Thin Products** **Product Overview** Monel K-500 Foil and Shim (UNS N05500) represent the thinnest available product forms of this precipitation-hardenable nickel-copper alloy. These precision-rolled products combine the excellent corrosion resistance of Monel 400 with enhanced mechanical properties achievable through age-hardening treatment. Foil and shim stock are engineered for applications requiring minimal thickness, precise dimensional control, and superior performance in corrosive environments, serving critical roles in aerospace, electronics, precision instruments, and specialized industrial applications. --- **Chemical Composition (ASTM B865)** | Element | Content (%) | |----------------|----------------| | **Nickel (Ni)** | 63.0 min (Balance) | | **Copper (Cu)** | 27.0–33.0 | | **Aluminum (Al)**| 2.30–3.15 | | **Titanium (Ti)**| 0.35–0.85 | | **Iron (Fe)** | 2.0 max | | **Manganese (Mn)**| 1.5 max | | **Carbon (C)** | 0.25 max | | **Silicon (Si)** | 0.5 max | | **Sulfur (S)** | 0.01 max | *Age-hardening mechanism involves precipitation of Ni₃(Ti,Al) intermetallic compounds during thermal aging treatment.* --- **Physical Properties** | Property | Value | |-------------------------------|---------------------------------| | **Density** | 8.44 g/cm³ (0.305 lb/in³) | | **Melting Range** | 1315–1350°C (2400–2460°F) | | **Electrical Resistivity** | 65.0 μΩ·cm (Annealed) | | **Thermal Conductivity** | 17.0 W/m·K (at 100°C) | | **Thermal Expansion Coefficient** | 13.9 μm/m·°C (20–100°C) | | **Modulus of Elasticity** | 179 GPa (26,000 ksi) | | **Magnetic Permeability** | <1.005 (Essentially non-magnetic) | --- **Mechanical Properties (Foil & Shim – Aged Condition)** *Aging Treatment: 1100°F (593°C) for 16 hours, furnace cool* | Property | Foil (0.025-0.1mm) | Shim (0.1-0.5mm) | Precision Shim (0.5-1.0mm) | |-----------------------------|--------------------|------------------|----------------------------| | **Tensile Strength** | 1030–1240 MPa | 965–1170 MPa | 930–1130 MPa | | **Yield Strength (0.2% Offset)** | 965–1170 MPa | 655–965 MPa | 620–895 MPa | | **Elongation in 2"** | 5–12% | 10–20% | 15–25% | | **Hardness** | 36–42 HRC | 28–38 HRC | 24–33 HRC | | **Fatigue Strength** | 410 MPa | 380 MPa | 345 MPa | --- **Product Specifications & Forms** **Foil Products** - **Thickness Range**: 0.025 mm to 0.1 mm (0.001" to 0.004") - **Width Availability**: 50 mm to 300 mm (2" to 12") - **Standard Conditions**: Annealed, 1/4 hard, 1/2 hard, full hard - **Tolerance**: ±0.002 mm for precision grades **Shim Products** - **Thickness Range**: 0.1 mm to 1.0 mm (0.004" to 0.040") - **Width Availability**: Up to 600 mm (24") - **Standard Forms**: Rolls, sheets, custom blanks - **Tolerance**: ±0.005 mm for precision shims **Special Variants** - **Laminated Shims**: Multiple thicknesses for selective removal - **Precision Blanks**: Custom-shaped components - **Embossed Foils**: Patterned surfaces for specific applications - **Composite Materials**: Clad with other materials --- **Key Characteristics & Advantages** 1. **Ultra-Thin Capability** – Maintains integrity and properties at minimal thicknesses 2. **Precision Thickness Control** – Tight tolerances for critical applications 3. **Excellent Spring Properties** – High yield strength ideal for spring applications 4. **Superior Corrosion Resistance** – Maintains performance in aggressive environments 5. **Non-Magnetic Characteristics** – Essential for electronic and instrument applications 6. **Good Formability** – Can be stamped, bent, and formed in annealed condition 7. **Age-Hardenable** – Can be heat treated after fabrication for enhanced properties --- **Product Applications** **Aerospace & Defense** - Gaskets and seals for fuel systems - Shims for precision alignment - EMI/RFI shielding components - Thin-wall conduit and protection - Instrumentation diaphragms **Electronics & Electrical** - Lead frame materials - Connector components - Spring contacts - Battery components - Shielding for sensitive electronics **Precision Instruments** - Calibration shims - Instrument springs - Sensing diaphragms - Precision spacers - Watch and clock components **Industrial Applications** - Chemical equipment gaskets - Pump seal components - Bearing seals - Valve diaphragms - Compressor shims **Medical Devices** - Surgical instrument components - Implantable device parts - Medical spring components - Diagnostic equipment shims --- **International Standards** | Standard Type | Standard Number | Specification | |---------------|-----------------|---------------| | **UNS** | **N05500** | Unified Numbering System | | **ASTM** | B865 | Precipitation Hardening Nickel-Copper Alloy Plate, Sheet, and Strip | | **ASTM** | B906 | General Requirements for Flat-Rolled Nickel and Nickel Alloys | | **AMS** | 4676 | Aerospace Material Specification | | **MIL** | MIL-N-2156 | Military Specification (Historical) | | **DIN** | 2.4375 | German Standard | | **EN** | NiCu30Al | European Standard | --- **Manufacturing & Processing** **Rolling Capabilities** - **Cold Rolling**: Precision rolling to exact thickness requirements - **Temper Control**: Various tempers available for different applications - **Surface Finish**: Bright cold-rolled, matte, or special finishes - **Slitting**: Precision slitting to required widths **Heat Treatment Options** - **Solution Annealing**: 1600–1650°F (870–900°C) for soft condition - **Aging Treatments**: Multiple cycles available for different strength levels - **Stress Relieving**: Low-temperature treatments for formed components **Fabrication Guidelines** - **Blanking**: Precision blanking for component manufacture - **Forming**: Best performed in annealed condition - **Etching**: Chemical etching for complex shapes - **Joining**: Welding and brazing with proper procedures --- **Quality Assurance & Testing** **Dimensional Verification** - Thickness measurement using laser gauges - Width and length verification - Flatness measurement - Surface roughness analysis **Material Testing** - Tensile testing from representative samples - Hardness verification - Microstructural examination - Corrosion testing per applicable standards **Certification Requirements** - Mill Test Certificates per EN 10204 3.1 - Chemical analysis certificates - Mechanical test reports - Dimensional inspection reports - Special testing as required (conductivity, permeability) --- **Special Features & Benefits** **Foil-Specific Advantages** - Ultra-thin yet strong material solution - Excellent for shielding applications - Good flexibility and formability - Consistent mechanical properties **Shim-Specific Advantages** - Precision thickness control - Excellent for alignment applications - Maintains properties under compression - Long-term dimensional stability **General Benefits** - Corrosion resistance in thin sections - Non-sparking characteristics - Low magnetic permeability - Good elevated temperature performance --- **Packaging & Handling** **Foil Packaging** - Wound on plastic or metal cores - Interleaved with protective paper - Vacuum sealed for corrosion protection - Boxed for shipment **Shim Packaging** - Flat packed between protective sheets - Individual piece protection - Moisture-proof wrapping - Clearly labeled for identification --- **Conclusion** Monel K-500 Foil and Shim (UNS N05500) provide engineers with ultra-thin, high-performance material solutions that maintain the alloy's characteristic high strength and excellent corrosion resistance. The precision manufacturing of these thin products enables their use in critical applications across aerospace, electronics, medical, and industrial sectors where minimal thickness, precise dimensions, and reliable performance are essential. With comprehensive quality assurance and international certification, Monel K-500 foil and shim products offer trusted solutions for the most demanding thin-section applications.

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 1713 gallon liquid totes Special package is available on request.