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

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

### **Product Introduction: Alloy 702 / INCONEL® 702 Wire (UNS N07702)** #### **Overview** INCONEL® 702 (UNS N07702) wire is a premium nickel-chromium-aluminum alloy specifically engineered for high-temperature applications requiring exceptional oxidation resistance and reliable performance. This precipitation-hardenable material maintains outstanding mechanical properties and structural stability at temperatures up to 1200°C (2200°F), making it ideal for welding, fasteners, springs, and specialized components in extreme thermal environments. --- ### **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 weldability** and fabrication characteristics - **High electrical resistivity** for heating applications - **Excellent spring properties** in heat-treated condition - **Consistent dimensional accuracy** and surface quality --- ### **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 (Wire - 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% | | **Reduction of Area** | 20-35% | | **Hardness** | HRB 95-105 | | **Shear Strength** | 480-580 MPa (70-84 ksi) | #### **Elevated Temperature Properties** - **Stress Rupture Strength**: 55 MPa (8 ksi) at 980°C (1800°F) for 100 hours - **Creep Strength**: Excellent resistance to deformation at high temperatures - **Thermal Fatigue Resistance**: Superior performance under thermal cycling - **Retains 65% of room temperature strength** at 1000°C (1830°F) --- ### **International Standards** | Standard | Specification | Application | |----------|---------------|-------------| | **ASTM** | B166 | Rod, Bar, and Wire | | **AWS** | A5.14 ERNiCrFe-7 | Welding Electrode Classification | | **AMS** | AMS 5717 | Wire and Spring Wire | | **UNS** | N07702 | Unified Numbering System | | **DIN** | 2.4665 | German Standard | --- ### **Product Specifications** #### **Wire Forms Available** - **Bare Wire**: Straight lengths or coils - **Spooled Wire**: For automated welding and feeding - **Spring Wire**: Precision temper for spring applications - **Filler Wire**: Welding and brazing applications - **Shaped Wire**: Rectangular, square, or custom profiles #### **Diameter Range & Tolerances** - **Fine Wire**: 0.1mm to 1.0mm (0.004" to 0.040") - **Medium Wire**: 1.0mm to 5.0mm (0.040" to 0.197") - **Heavy Wire**: 5.0mm to 12.0mm (0.197" to 0.472") - **Tolerance**: ±0.01mm to ±0.05mm depending on diameter #### **Available Conditions** - **Annealed**: Maximum ductility for forming - **¼ Hard**: Moderate strength with good formability - **½ Hard**: Balanced properties for general applications - **Full Hard**: Maximum strength for spring applications - **Precipitation Hardened**: Optimized mechanical properties --- ### **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 Wire Processing:** - **Continuous Annealing**: For consistent properties in long lengths - **Patenting Treatment**: For improved drawability - **Stress Relieving**: For dimensional stability - **Precipitation Hardening**: For maximum strength properties --- ### **Product Applications** #### **Welding & Fabrication** - **Filler Metal**: For welding similar high-temperature alloys - **Cladding Applications**: Surface overlay for corrosion protection - **Repair Welding**: Maintenance of high-temperature components - **Brazing Applications**: High-temperature brazing operations #### **Electrical & Heating Applications** - **Heating Elements**: High-temperature electrical heating elements - **Resistance Wires**: Precision resistance components - **Thermocouple Wires**: High-temperature sensing applications - **Electrical Contacts**: High-temperature switch components #### **Aerospace & Defense** - **Turbine Engine Components**: Wire forms and fasteners - **Spring Applications**: High-temperature mechanical springs - **Safety Wire**: Locking wire for critical fasteners - **Instrumentation**: Sensor and control system components #### **Industrial Applications** - **Heat Treatment Fixtures**: Baskets, hooks, and support wires - **Chemical Processing**: Wire cloth and filter elements - **Furnace Components**: Heating element supports and hangers - **Fasteners**: High-temperature bolts and nuts --- ### **Fabrication & Processing** #### **Welding Characteristics** - **GTAW (TIG)**: Preferred for optimum quality - **GMAW (MIG)**: Suitable for production welding - **SMAW**: With matching electrode coatings - **SAW**: For heavy section welding #### **Forming & Shaping** - **Cold Forming**: Excellent in annealed condition - **Hot Forming**: At 1050-1150°C for complex shapes - **Spring Coiling**: Various temper conditions available - **Wire EDM**: Suitable for precision components #### **Machining** - **Turning**: Use positive rake angles and rigid setups - **Grinding**: Suitable for precision dimensions - **Polishing**: For improved surface finish - **Cutting**: Abrasive or mechanical methods --- ### **Quality Assurance & Testing** #### **Dimensional Control** - **Diameter Verification**: Laser micrometry and mechanical gauging - **Surface Inspection**: Visual and microscopic examination - **Straightness**: Precision straightening capabilities - **Spooling Quality**: Uniform winding and tension control #### **Material Testing** - **Chemical Analysis**: Verify composition compliance - **Tensile Testing**: Mechanical property verification - **Hardness Testing**: Uniformity assessment - **Bend Testing**: Ductility and formability evaluation #### **Specialized Testing** - **Welding Tests**: Deposit metal quality assessment - **Fatigue Testing**: Cyclic performance verification - **Creep Testing**: High-temperature performance validation - **Oxidation Testing**: Weight gain measurements at temperature #### **Certification & Documentation** - **Mill Test Certificates**: EN 10204 3.1/3.2 - **Welding Certifications**: Procedure qualification records - **Material Certifications**: Compliance with customer specifications - **Quality Records**: Complete processing documentation --- ### **Packaging & Handling** #### **Standard Packaging** - **Spools**: Plastic or wooden spools in various sizes - **Coils**: Protected coils with proper support - **Straight Lengths**: Bundled and protected for shipment - **Special Packaging**: Clean room or vacuum packaging available #### **Storage & Handling** - **Dry Storage**: Moisture-controlled environments - **Corrosion Protection**: VCI paper or protective coatings - **Handling Care**: Prevent kinks and surface damage - **Identification**: Clear labeling and heat number tracking --- ### **Why Choose Our INCONEL 702 Wire?** - **Manufacturing Expertise**: Advanced wire drawing technology - **Quality Assurance**: Comprehensive testing and certification - **Technical Support**: Application engineering expertise - **Custom Solutions**: Tailored diameters and tempers - **Global Compliance**: International standard certification - **Proven Performance**: Established track record in critical applications **Contact us today for technical specifications and quotation for INCONEL 702 wire products. 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 2988 gallon liquid totes Special package is available on request.