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

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

### **Product Introduction: Alloy 702 / INCONEL® 702 Rod (UNS N07702)** #### **Overview** INCONEL® 702 (UNS N07702) rod is a high-strength nickel-chromium alloy specifically engineered for exceptional oxidation resistance and mechanical stability at temperatures up to 1200°C (2200°F). This precipitation-hardenable material combines outstanding high-temperature performance with excellent fabrication characteristics, making it ideal for critical components in extreme thermal environments. --- ### **Key Features & Advantages** - **Exceptional oxidation resistance** up to 1200°C (2200°F) - **Excellent high-temperature strength** and structural stability - **Superior carburization resistance** in aggressive environments - **Good machinability** and fabrication properties - **High electrical resistivity** for heating applications - **Excellent thermal fatigue resistance** --- ### **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** #### **Room Temperature Properties (Aged Condition)** | Property | Value | |---------|-------| | **Tensile Strength** | 860-1030 MPa (125-150 ksi) | | **Yield Strength (0.2% Offset)** | 550-690 MPa (80-100 ksi) | | **Elongation** | 20-30% | | **Reduction of Area** | 25-40% | | **Hardness** | HRB 95-105 | #### **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 Shock Resistance**: Withstands rapid temperature changes - **Structural Stability**: Maintains properties during prolonged exposure --- ### **International Standards** | Standard | Specification | |----------|---------------| | **UNS** | N07702 | | **ASTM** | B166 (Rod, Bar, and Wire) | | **AMS** | AMS 5719 | | **DIN** | 2.4665 | | **EN** | NiCr15Fe7AlTi | --- ### **Rod Specifications** #### **Available Sizes & Tolerances** - **Diameter Range**: 3mm to 300mm (0.125" to 12") - **Length**: Standard 3-6 meters, cut-to-size available - **Straightness**: Commercial and precision grades - **Surface Finish**: Black, turned, ground, or polished #### **Processing Conditions** - **Hot Finished**: As-forged or hot-rolled condition - **Annealed**: Solution treated for optimal machinability - **Aged**: Precipitation hardened for maximum strength - **Centerless Ground**: Precision dimensional control --- ### **Heat Treatment** **Standard Heat Treatment:** - **Solution Treatment**: 1150-1200°C (2100-2200°F), rapid cooling - **Aging Treatment**: 800-850°C (1470-1560°F) for 16-24 hours **Processing Guidelines:** - Controlled atmosphere recommended to prevent excessive oxidation - Uniform heating and cooling rates to minimize distortion - Stress relief annealing after heavy machining operations --- ### **Product Applications** #### **Industrial Heating & Heat Treatment** - **Electrical Heating Elements**: High-temperature furnace components - **Heat Treatment Fixtures**: Baskets, trays, and support rods - **Furnace Components**: Radiant tubes, muffles, and retorts - **Thermocouple Protection Tubes**: High-temperature sensing applications #### **Aerospace & Defense** - **Jet Engine Components**: Afterburner parts and combustion chambers - **Rocket Motor Components**: Nozzle inserts and support structures - **Exhaust Systems**: High-temperature fasteners and components - **Turbine Components**: Non-rotating high-temperature parts #### **Industrial Processing** - **Glass Manufacturing**: Forming tools and mold components - **Ceramic Production**: Kiln furniture and support structures - **Chemical Processing**: Reactor internals and support rods - **Power Generation**: Gas turbine maintenance components #### **Specialized Applications** - **Nuclear Industry**: Fuel element handling tools - **Semiconductor**: High-temperature processing fixtures - **Research Equipment**: High-temperature test apparatus - **Automotive**: Turbocharger components and exhaust systems --- ### **Machining & Fabrication** #### **Machining Guidelines** - **Tool Material**: Carbide tools recommended for production work - **Cutting Speed**: Moderate speeds with positive rake angles - **Coolant**: Adequate cooling required to control work hardening - **Chip Control**: Proper chip breakers essential for stringy chips #### **Welding Characteristics** - **GTAW (TIG)**: Preferred welding method - **Filler Metal**: INCONEL Filler Metal 72 recommended - **Pre-heat**: Generally not required - **Post-Weld Heat Treatment**: Recommended for critical applications #### **Forming Operations** - **Hot Working**: 1050-1200°C (1920-2190°F) recommended - **Cold Working**: Possible in annealed condition with intermediate annealing - **Forging**: Good hot workability with proper temperature control --- ### **Quality Assurance & Testing** #### **Standard Testing Protocol** - **Chemical Analysis**: Spectroscopic verification of composition - **Mechanical Testing**: Tensile, hardness, and impact tests - **Macro Examination**: Etchant testing for soundness - **Dimensional Verification**: Compliance with specified tolerances #### **Specialized Testing** - **High-Temperature Testing**: Stress rupture and creep testing - **Oxidation Testing**: Weight change measurements at elevated temperatures - **Microstructural Analysis**: Grain size and phase distribution - **Non-Destructive Testing**: UT, PT, or MT as required --- ### **Why Choose Our INCONEL 702 Rod?** - **Manufacturing Expertise**: Decades of experience in high-temperature alloys - **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 **Contact us today for technical specifications and quotation for INCONEL 702 rod products. Our engineering team provides comprehensive support from material selection through final machining.** --- *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 2977 gallon liquid totes Special package is available on request.