Alloy 702,Inconel 702 Bar(Round bar, Flat bar),UNS N07702,E FORU

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

### **Product Introduction: Alloy 702 / INCONEL® 702 Bar (Round bar, Flat bar) UNS N07702** #### **Overview** INCONEL® 702 (UNS N07702) bar products are high-performance nickel-chromium-aluminum alloys specifically designed for applications requiring exceptional oxidation resistance and high-temperature strength. Available in both round bar and flat bar forms, these precipitation-hardenable materials maintain excellent mechanical properties and structural stability at temperatures up to 1200°C (2200°F), making them ideal for extreme thermal environments 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** and structural stability - **Excellent fabrication characteristics** including machinability and weldability - **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** #### **Room Temperature Properties (Aged Condition)** | Property | Round Bar | Flat Bar | |---------|-----------|----------| | **Tensile Strength** | 860-1030 MPa | 830-1000 MPa | | **Yield Strength** | 550-690 MPa | 520-670 MPa | | **Elongation** | 20-30% | 18-28% | | **Reduction of Area** | 25-40% | 22-35% | | **Hardness** | HRB 95-105 | HRB 90-100 | #### **Elevated Temperature Properties** - **Stress Rupture Strength**: 55 MPa at 980°C for 100 hours - **Creep Strength**: Excellent long-term performance - **Thermal Shock Resistance**: Withstands rapid temperature cycling - **Structural Stability**: Maintains properties during prolonged exposure --- ### **International Standards** | Standard | Round Bar | Flat Bar | |----------|-----------|----------| | **UNS** | N07702 | N07702 | | **ASTM** | B166 | B168 | | **AMS** | AMS 5719 | AMS 5548 | | **DIN** | 2.4665 | 2.4665 | --- ### **Product Specifications** #### **Round Bar Specifications** - **Diameter Range**: 5mm to 500mm (0.2" to 20") - **Length**: Standard 3-6 meters, cut-to-size available - **Tolerances**: h9, h11, or custom requirements - **Surface Finish**: Hot finished, turned, ground, or polished #### **Flat Bar Specifications** - **Thickness**: 5mm to 150mm (0.2" to 6") - **Width**: 20mm to 500mm (0.8" to 20") - **Length**: Standard 3-6 meters, custom lengths available - **Edge Condition**: As-rolled, machined, or radius edges #### **Available Conditions** - **Solution Annealed**: Optimal for machining and forming - **Precipitation Hardened**: Maximum strength properties - **Hot Worked**: As-forged or hot-rolled condition - **Stress Relieved**: For dimensional stability --- ### **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 **Special Considerations:** - Controlled atmosphere recommended for surface protection - Uniform heating and cooling rates essential - Stress relief after heavy machining operations - Solution annealing after welding or severe forming --- ### **Product Applications** #### **Round Bar Applications** - **Electrical Heating Elements**: High-temperature furnace components - **Heat Treatment Fixtures**: Hooks, rods, and support members - **Furnace Components**: Radiant tubes, thermocouple protection tubes - **Industrial Machinery**: High-temperature shafts and axles #### **Flat Bar Applications** - **Structural Supports**: High-temperature brackets and frames - **Furnace Construction**: Retorts, muffles, and heat shields - **Heat Treatment Equipment**: Baskets, trays, and fixtures - **Industrial Components**: Base plates and support structures #### **Aerospace & Defense** - **Jet Engine Components**: Afterburner parts, combustion chambers - **Rocket Motor Parts**: Nozzle components, support structures - **Exhaust Systems**: High-temperature fasteners and brackets - **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 members - **Power Generation**: Gas turbine maintenance components --- ### **Machining & Fabrication** #### **Machining Guidelines** - **Tool Material**: Carbide tools recommended for production work - **Cutting Parameters**: Moderate speeds with positive rake angles - **Coolant Requirements**: Adequate cooling to control work hardening - **Chip Control**: Proper chip breakers essential for efficient machining #### **Welding Characteristics** - **Preferred Method**: GTAW (TIG) with matching filler metal - **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 - **Forging Characteristics**: Good hot workability with proper control - **Bending Requirements**: Intermediate annealing for severe deformation --- ### **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 #### **Non-Destructive Testing** - **Ultrasonic Testing**: Internal quality assessment - **Dye Penetrant Inspection**: Surface defect detection - **Magnetic Particle Testing**: Surface and near-surface flaws - **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 --- ### **Why Choose Our INCONEL 702 Bar Products?** - **Manufacturing Expertise**: Advanced processing technology - **Quality Assurance**: Comprehensive testing and certification - **Technical Support**: Application engineering expertise - **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 round bar and flat bar products. Our engineering team provides comprehensive support from material selection through final application.** --- *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 2978 gallon liquid totes Special package is available on request.