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

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

### **Product Introduction: Alloy 702 / INCONEL® 702 Sheet (UNS N07702)** #### **Overview** INCONEL® 702 (UNS N07702) sheet is a high-performance nickel-chromium-aluminum alloy specifically designed for applications requiring exceptional oxidation resistance and structural stability at extreme temperatures. This precipitation-hardenable material offers outstanding performance up to 1200°C (2200°F), making it ideal for high-temperature applications in aerospace, industrial heating, and chemical processing industries. --- ### **Key Features & Advantages** - **Exceptional oxidation resistance** up to 1200°C (2200°F) - **Excellent high-temperature strength** and creep resistance - **Superior resistance to carburization** and sulfidation - **Good thermal fatigue resistance** under cycling conditions - **Excellent fabricability** including forming and welding capabilities - **High electrical resistivity** for heating element 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 (Sheet - Aged Condition)** #### **Room Temperature Properties** | Property | Value | |---------|-------| | **Tensile Strength** | 830-1000 MPa (120-145 ksi) | | **Yield Strength (0.2% Offset)** | 520-670 MPa (75-97 ksi) | | **Elongation** | 18-28% | | **Hardness** | HRB 90-100 | #### **Elevated Temperature Properties** - **Stress Rupture Strength**: 55 MPa (8 ksi) at 980°C (1800°F) for 100 hours - **Creep Strength**: Excellent long-term performance at high temperatures - **Thermal Fatigue Resistance**: Superior performance under thermal cycling - **Structural Stability**: Maintains properties during prolonged exposure --- ### **International Standards** | Standard | Specification | Application | |----------|---------------|-------------| | **ASTM** | B168 | Sheet, Strip, and Plate | | **ASME** | SB168 | Boiler and Pressure Vessel Code | | **UNS** | N07702 | Unified Numbering System | | **DIN** | 2.4665 | German Standard | | **AMS** | AMS 5548 | Sheet and Strip | --- ### **Product Specifications** #### **Sheet Dimensions & Tolerances** - **Thickness Range**: 0.5mm to 6.0mm (0.020" to 0.250") - **Standard Thickness Tolerances**: ±0.05mm to ±0.15mm - **Width Availability**: 600mm to 1500mm (24" to 60") - **Standard Lengths**: 2000mm to 4000mm (78" to 157") #### **Available Conditions** - **Solution Annealed**: Optimal for fabrication and forming - **Precipitation Hardened**: Maximum strength properties - **Cold Rolled**: Various tempers for specific applications - **Stress Relieved**: For dimensional stability #### **Surface Finish Options** - **No. 1 Finish**: Annealed and pickled - **No. 2B Finish**: Bright annealed for superior appearance - **Polished Finish**: Special surface requirements - **Descaled**: For welding and critical applications --- ### **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 Sheet:** - Controlled atmosphere recommended for surface protection - Uniform heating and cooling rates essential for flatness - Stress relief after forming operations - Solution annealing after welding --- ### **Product Applications** #### **Industrial Heating & Heat Treatment** - **Furnace Components**: Retorts, muffles, and radiant shields - **Heat Treatment Fixtures**: Baskets, trays, and support sheets - **Electrical Heating Elements**: High-temperature heating components - **Industrial Oven Parts**: Liners and structural components #### **Aerospace & Defense** - **Jet Engine Components**: Combustion chambers and afterburner liners - **Rocket Motor Components**: Nozzle segments and thermal protection - **Exhaust Systems**: High-temperature ducting and shields - **Aircraft Structural Components**: High-temperature brackets #### **Chemical & Petrochemical Processing** - **Reformer Furnace Components**: Outlet headers and transition pieces - **Reactor Liners**: High-temperature reactor protection - **Heat Exchanger Components**: Plates and baffles - **Process Vessel Linings**: Corrosion protection layers #### **Power Generation** - **Gas Turbine Components**: Combustion liners and heat shields - **Heat Recovery Systems**: Structural components and ducting - **Nuclear Applications**: Core components and shielding - **Advanced Power Systems**: High-temperature structural elements #### **Specialized Applications** - **Glass Manufacturing**: Forming tools and mold components - **Semiconductor Processing**: Diffusion furnace components - **Research Equipment**: High-temperature test apparatus - **Automotive**: Turbocharger shields and exhaust components --- ### **Fabrication & Processing** #### **Forming Operations** - **Cold Forming**: Good formability in annealed condition - **Hot Forming**: At 1050-1150°C for complex shapes - **Minimum Bend Radii**: 2T for annealed condition, 4T for hardened condition - **Deep Drawing**: Suitable in annealed condition with proper tooling #### **Welding Characteristics** - **Preferred Method**: GTAW (TIG) for optimum quality - **Filler Metal**: INCONEL Filler Metal 72 - **Shielding Gas**: Argon or argon-helium mixtures - **Post-Weld Heat Treatment**: Recommended for optimal properties #### **Machining Guidelines** - **Tool Selection**: Carbide tools recommended - **Cutting Parameters**: Moderate speeds with positive rake angles - **Coolant Requirements**: Adequate cooling essential - **Chip Control**: Proper chip breakers required --- ### **Quality Assurance & Testing** #### **Standard Testing Protocol** - **Chemical Analysis**: Spectroscopic verification of composition - **Mechanical Testing**: Tensile, hardness, and bend tests - **Surface Quality**: Visual and microscopic examination - **Dimensional Verification**: Compliance with specified tolerances #### **Non-Destructive Testing** - **Liquid Penetrant Testing**: Surface defect detection - **Ultrasonic Testing**: Internal quality assessment - **Eddy Current Testing**: For thickness verification - **Visual Inspection**: Surface quality evaluation #### **Certification & Documentation** - **Mill Test Certificates**: EN 10204 3.1/3.2 - **Material Traceability**: Full heat-to-part tracking - **Process Documentation**: Complete manufacturing records - **Compliance Certificates**: International standard certification --- ### **Performance Characteristics** #### **Oxidation Resistance** - **Continuous Service**: Up to 1200°C (2200°F) - **Cyclic Oxidation**: Excellent resistance to spalling - **Scaling Resistance**: Minimal weight gain at high temperatures - **Surface Stability**: Forms protective, adherent oxide layer #### **Corrosion Resistance** - **Carburization Resistance**: Excellent in hydrocarbon environments - **Sulfidation Resistance**: Good performance in sulfur-containing atmospheres - **Chloride Resistance**: Moderate resistance to chloride attack - **Nitriding Resistance**: Good performance in nitrogen atmospheres --- ### **Why Choose Our INCONEL 702 Sheet?** - **Manufacturing Expertise**: Advanced rolling technology and quality control - **Quality Assurance**: Comprehensive testing and certification - **Technical Support**: Application engineering and fabrication guidance - **Global Standards Compliance**: Certified to international specifications - **Proven Performance**: Established track record in critical applications - **Custom Solutions**: Tailored dimensions and processing options **Contact us today for technical specifications and quotation for INCONEL 702 sheet products. Our engineering 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 2982 gallon liquid totes Special package is available on request.