Alloy 702,Inconel 702 Foil,Shim,UNS N07702,E FORU

British Specs:，American Specs: AMS 5550 Sheet, Strip and Plate，German Specs:

### **Product Introduction: Alloy 702 / INCONEL® 702 Foil & Shim (UNS N07702)** #### **Overview** INCONEL® 702 (UNS N07702) foil and shim products represent the pinnacle of high-temperature thin-gauge engineering, offering exceptional oxidation resistance and mechanical stability in extreme thermal environments. These precision-rolled materials combine the superior high-temperature properties of INCONEL 702 with the dimensional precision required for advanced aerospace, electronics, and industrial applications where space and weight constraints are critical. --- ### **Key Features & Advantages** - **Exceptional oxidation resistance** up to 1200°C (2200°F) in thin sections - **Excellent high-temperature strength** and creep resistance - **Superior resistance to carburization** and sulfidation - **Precise dimensional control** with tight thickness tolerances - **Excellent surface quality** for critical applications - **Good formability** in annealed condition - **Outstanding spring properties** when heat treated --- ### **Chemical Composition (Typical % Weight)** | Element | Content (%) | Role in Alloy | |---------|-------------|---------------| | **Nickel (Ni)** | Balance | Matrix element providing high-temperature strength | | **Chromium (Cr)** | 14.0-17.0 | Primary oxidation resistance | | **Aluminum (Al)** | 2.75-3.75 | Forms protective alumina scale | | **Iron (Fe)** | 0.5-2.5 | - | | **Titanium (Ti)** | 0.25-0.75 | Precipitation hardening element | | **Zirconium (Zr)** | 0.01-0.10 | Enhances oxidation resistance | | **Manganese (Mn)** | 0.50 max | - | | **Silicon (Si)** | 0.50 max | - | | **Copper (Cu)** | 0.50 max | - | | **Carbon (C)** | 0.05 max | - | --- ### **Physical Properties** | Property | Value | |---------|-------| | **Density** | 7.95 g/cm³ (0.287 lb/in³) | | **Melting Point** | 1370-1425°C (2500-2600°F) | | **Thermal Conductivity** | 15.1 W/m·K at 20°C | | **Thermal Expansion** | 14.2 μm/m·K at 20-100°C | | **Specific Heat** | 460 J/kg·K at 20°C | | **Electrical Resistivity** | 1.18 μΩ·m at 20°C | | **Modulus of Elasticity** | 221 GPa (32 x 10^6 psi) | --- ### **Mechanical Properties** #### **Foil & Shim Properties (Aged Condition)** | Property | Foil (0.05-0.2mm) | Shim (0.2-1.0mm) | |---------|-------------------|------------------| | **Tensile Strength** | 850-1050 MPa | 830-1000 MPa | | **Yield Strength** | 550-700 MPa | 520-670 MPa | | **Elongation** | 12-20% | 15-25% | | **Hardness** | HRB 95-105 | HRB 90-100 | | **Fatigue Strength** | 380-450 MPa | 350-420 MPa | #### **Elevated Temperature Performance** - **Continuous Service**: Up to 1200°C (2200°F) - **Stress Rupture**: 50 MPa at 980°C for 100 hours - **Thermal Cycling**: Excellent resistance to thermal fatigue - **Oxidation Resistance**: Minimal weight gain at high temperatures --- ### **International Standards** | Standard | Foil Specification | Shim Specification | |----------|-------------------|-------------------| | **ASTM** | B168 | B168 | | **AMS** | AMS 5548 | AMS 5548 | | **UNS** | N07702 | N07702 | | **MIL** | MIL-N-894 | MIL-N-894 | --- ### **Product Specifications** #### **Dimensional Ranges & Tolerances** **Foil Products:** - **Thickness**: 0.012mm to 0.20mm (0.0005" to 0.008") - **Thickness Tolerance**: ±0.002mm to ±0.01mm - **Width**: 2mm to 300mm (0.08" to 12") - **Standard Rolls**: 50m to 1000m lengths **Shim Products:** - **Thickness**: 0.20mm to 2.0mm (0.008" to 0.078") - **Thickness Tolerance**: ±0.01mm to ±0.03mm - **Width**: 10mm to 600mm (0.4" to 24") - **Forms**: Sheets, coils, custom blanks #### **Available Conditions & Tempers** - **Annealed**: Maximum formability - **¼ Hard**: Moderate strength with good formability - **½ Hard**: Balanced properties - **Full Hard**: Maximum strength for spring applications - **Precipitation Hardened**: Optimized mechanical properties #### **Surface Finish Options** - **Bright Annealed**: Smooth, reflective surface - **Cold Rolled**: Standard matte finish - **Polished**: Special mirror finish - **Passivated**: Enhanced corrosion resistance --- ### **Heat Treatment** **Standard Processing:** - **Solution Treatment**: 1150-1200°C (2100-2200°F), rapid cooling - **Aging Treatment**: 800-850°C (1470-1560°F) for 16-24 hours **Special Considerations for Thin Materials:** - Precise temperature control to prevent distortion - Continuous heat treatment for uniform properties - Atmosphere control to maintain surface quality - Stress relief annealing for dimensional stability --- ### **Product Applications** #### **Aerospace & Defense** - **Turbine Engine Seals**: Thin foil seals for gas path control - **Thermal Barrier Components**: Heat shielding in compact spaces - **Electrical Components**: High-temperature connector springs - **Instrumentation**: Sensor mounting shims and spacers #### **Electronics & Electrical** - **Heating Elements**: High-temperature electrical heating strips - **Resistance Components**: Precision electrical resistance elements - **Thermocouple Components**: High-temperature sensing elements - **Electronic Connectors**: High-temperature contact springs #### **Industrial Applications** - **Furnace Components**: Thin thermal barriers and radiation shields - **Heat Treatment**: Brazing fixtures and support shims - **Chemical Processing**: Gaskets and seals for aggressive environments - **Precision Instruments**: Calibration standards and reference shims #### **Specialized Applications** - **Glass Manufacturing**: Forming molds and support shims - **Semiconductor Processing**: High-temperature process fixtures - **Research Equipment**: High-temperature test apparatus - **Medical Devices**: Surgical instrument components --- ### **Fabrication & Processing** #### **Stamping & Blanking** - Suitable for high-speed precision stamping - Progressive die capabilities for complex shapes - Fine blanking for critical edge quality - Minimal tool wear with proper die materials #### **Forming Operations** - **Deep Drawing**: Excellent in annealed condition - **Bending**: Minimum radius 2T (annealed) to 4T (hard) - **Roll Forming**: Suitable for continuous processing - **Embossing**: Good detail reproduction capability #### **Joining Methods** - **Resistance Welding**: Excellent weldability - **Laser Welding**: Precision joining for thin sections - **Brazing**: Compatible with high-temperature brazing alloys - **Adhesive Bonding**: With proper surface preparation --- ### **Quality Assurance & Testing** #### **Dimensional Control** - **Laser Micrometry**: Continuous thickness monitoring - **Surface Roughness**: Precise measurement capability - **Flatness Testing**: Stress relief for critical applications - **Edge Quality**: Controlled burr and edge condition #### **Material Testing** - **Tensile Testing**: Longitudinal and transverse properties - **Hardness Mapping**: Uniformity verification - **Microstructural Analysis**: Grain size and phase distribution - **Surface Quality**: Visual and microscopic examination #### **Specialized Testing** - **Springback Analysis**: Forming characteristic evaluation - **Fatigue Testing**: Cyclic performance verification - **Thermal Cycling**: High-temperature performance validation - **Oxidation Testing**: Weight gain measurements at temperature --- ### **Packaging & Handling** #### **Standard Packaging** - **Foil Rolls**: Plastic cores with protective wrapping - **Shim Sheets**: Interleaved with protective paper - **Clean Room Packaging**: Class 1000 or better available - **Humidity Control**: Desiccant packs for moisture protection #### **Special Handling** - **Static Shielding**: For electronic applications - **Custom Slitting**: Precision width tolerances - **Die-Cut Blanks**: Pre-cut shapes available - **Kitting Services**: Multi-component assemblies --- ### **Why Choose Our INCONEL 702 Foil & Shim Products?** - **Precision Manufacturing**: State-of-the-art rolling technology - **Quality Excellence**: Comprehensive testing and certification - **Technical Expertise**: Application engineering support - **Custom Solutions**: Tailored dimensions and properties - **Global Compliance**: International standard certification - **Proven Performance**: Established track record in critical applications **Contact us today to discuss your specific INCONEL 702 foil and shim requirements. Our technical team provides comprehensive support from material selection through fabrication processing.** --- *Disclaimer: INCONEL® is a registered trademark of Special Metals Corporation. The information provided is for technical reference only. Final material selection should be verified through appropriate testing and engineering analysis for specific 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 2987 gallon liquid totes Special package is available on request.