Alloy 702,Inconel 702 Strip,UNS N07702,E FORU

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

### **Product Introduction: Alloy 702 / INCONEL® 702 Strip (UNS N07702)** #### **Overview** INCONEL® 702 (UNS N07702) strip is a precision-rolled nickel-chromium-aluminum alloy specifically engineered for high-temperature applications requiring exceptional oxidation resistance and reliable performance in thin-gauge configurations. This precipitation-hardenable material maintains outstanding mechanical properties and structural stability at temperatures up to 1200°C (2200°F), making it ideal for demanding applications in aerospace, electronics, and industrial heating sectors. --- ### **Key Features & Advantages** - **Exceptional oxidation resistance** up to 1200°C (2200°F) - **Excellent high-temperature strength** in thin sections - **Superior resistance to carburization** and sulfidation - **Precise dimensional control** with tight thickness tolerances - **Excellent surface quality** for critical applications - **Good formability and spring properties** in heat-treated condition - **High electrical resistivity** for electrical heating applications --- ### **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 (Strip - Aged Condition)** #### **Room Temperature Properties** | Property | Value | |---------|-------| | **Tensile Strength** | 850-1050 MPa (123-152 ksi) | | **Yield Strength (0.2% Offset)** | 550-700 MPa (80-102 ksi) | | **Elongation** | 15-25% | | **Hardness** | HRB 95-105 | | **Fatigue Strength** | 380-450 MPa (55-65 ksi) | #### **Elevated Temperature Properties** - **Stress Rupture Strength**: 50 MPa (7 ksi) at 980°C (1800°F) for 100 hours - **Creep Strength**: Excellent performance in thin sections - **Thermal Fatigue Resistance**: Superior performance under thermal cycling - **Structural Stability**: Maintains properties during prolonged exposure --- ### **International Standards** | Standard | Specification | Application | |----------|---------------|-------------| | **ASTM** | B168 | Strip and Sheet | | **AMS** | AMS 5548 | Strip and Foil | | **UNS** | N07702 | Unified Numbering System | | **DIN** | 2.4665 | German Standard | --- ### **Product Specifications** #### **Strip Dimensions & Tolerances** - **Thickness Range**: 0.05mm to 2.0mm (0.002" to 0.078") - **Thickness Tolerance**: ±0.005mm to ±0.03mm - **Width Range**: 2mm to 600mm (0.08" to 24") - **Width Tolerance**: ±0.1mm to ±0.5mm #### **Available Conditions** - **Solution Annealed**: Optimal for severe forming operations - **¼ Hard**: For moderate forming requirements - **½ Hard**: Balance of strength and formability - **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**: Mirror finish for special applications - **Temper Rolled**: Controlled surface texture --- ### **Heat Treatment** **Standard Heat Treatment Cycle:** - **Solution Treatment**: 1150-1200°C (2100-2200°F), rapid cooling - **Aging Treatment**: 800-850°C (1470-1560°F) for 16-24 hours, air cooling **Special Considerations for Strip:** - Precise temperature control for thin gauges - Continuous heat treatment for uniform properties - Stress relief for flatness control - Atmosphere control to maintain surface quality --- ### **Product Applications** #### **Electrical & Electronic Components** - **Heating Elements**: High-temperature electrical heating strips - **Resistance Wires**: Precision resistance components - **Thermocouple Elements**: High-temperature sensing applications - **Electrical Contacts**: High-temperature switch components #### **Aerospace & Defense** - **Turbine Engine Components**: Seal strips and shroud segments - **Aircraft Electrical Systems**: High-temperature wiring and components - **Missile Systems**: Guidance and control components - **Satellite Components**: Thermal management elements #### **Industrial Heating Applications** - **Furnace Components**: Radiant heating strips and elements - **Heat Treatment Fixtures**: Brazing fixtures and support strips - **Industrial Heating**: Process heating elements - **Temperature Sensors**: High-temperature sensing strips #### **Precision Components** - **Springs and Clips**: High-temperature mechanical springs - **Bellows and Diaphragms**: Pressure sensing elements - **Shims and Spacers**: Precision alignment components - **Medical Devices**: Surgical instrument components --- ### **Fabrication & Processing** #### **Stamping and Blanking** - Suitable for high-speed precision stamping operations - Progressive die capabilities for complex shapes - Fine blanking for critical edge quality - Minimal tool wear with proper die materials #### **Forming Operations** - **Deep Drawing**: Good performance in annealed condition - **Bending**: Minimum bend 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 capability - **Brazing**: Compatible with nickel-based 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 Condition**: Controlled burr and edge quality #### **Material Testing** - **Tensile Testing**: Longitudinal and transverse properties - **Hardness Mapping**: Uniformity verification - **Microhardness**: Cross-sectional analysis - **Surface Quality**: Visual and microscopic examination #### **Specialized Testing** - **Springback Analysis**: Forming characteristic evaluation - **Fatigue Testing**: Cyclic performance verification - **Thermal Cycling**: High-temperature performance validation - **Electrical Resistivity**: Consistent electrical properties --- ### **Packaging & Handling** #### **Standard Packaging** - **Coil Cores**: 75mm, 150mm, 300mm diameters - **Protective Wrapping**: VCI paper and polyethylene - **Edge Protection**: Custom edge guards available - **Packing**: Wooden crates or steel boxes #### **Special Handling** - **Clean Room Packaging**: Class 1000 or better - **Dry Atmosphere**: Humidity-controlled packaging - **Static Shielding**: For electronic applications - **Custom Slitting**: Precision width tolerances --- ### **Why Choose Our INCONEL 702 Strip?** - **Precision Manufacturing**: State-of-the-art rolling mills - **Quality Assurance**: Comprehensive testing and certification - **Technical Expertise**: Application engineering support - **Custom Solutions**: Tailored tempers and dimensions - **Global Compliance**: International standard certification - **Proven Performance**: Established track record in critical applications **Contact us today to discuss your specific INCONEL 702 strip 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 2983 gallon liquid totes Special package is available on request.