Alloy 722，Inconel 722 Wire，UNS N07722，EFORU

British Specs:，American Specs:AMS 5541 Sheet and Strip AMS 5714 Bar and Forgings，German Specs:

### **Product Introduction: Alloy 722 / Inconel 722 Wire (UNS N07722)** #### **Overview** **Alloy 722 Wire** (commercially known as **Inconel® 722 Wire**) is a high-performance nickel-chromium superalloy supplied in wire form, combining exceptional high-temperature strength with outstanding corrosion resistance and excellent fabricability. This precipitation-hardenable alloy wire maintains superior mechanical properties from cryogenic temperatures up to 815°C (1500°F), making it suitable for both welding applications and the manufacture of high-performance components. The wire is manufactured through sophisticated drawing processes and controlled heat treatments to ensure consistent diameter, superior surface quality, and reliable performance in critical aerospace, energy, and chemical processing applications. The unique age-hardening characteristics of Alloy 722 wire, achieved through gamma prime [γ'] phase formation, provide exceptional strength and microstructural stability even after prolonged exposure to aggressive service conditions. --- #### **Chemical Composition** The chemical composition of Alloy 722 Wire (UNS N07722) conforms to strict international standards: | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | 45.0 - 50.0 | | **Chromium (Cr)** | 14.0 - 17.0 | | **Iron (Fe)** | Balance | | **Molybdenum (Mo)** | 6.0 - 8.0 | | **Niobium (Nb)** | 1.5 - 2.5 | | **Titanium (Ti)** | 2.0 - 3.0 | | **Aluminum (Al)** | 1.0 - 1.8 | | **Cobalt (Co)** | ≤ 1.00 | | **Carbon (C)** | ≤ 0.08 | | **Manganese (Mn)** | ≤ 0.50 | | **Silicon (Si)** | ≤ 0.50 | | **Sulfur (S)** | ≤ 0.015 | | **Copper (Cu)** | ≤ 0.30 | | **Boron (B)** | 0.003 - 0.010 | *The optimized composition enables effective precipitation hardening through gamma prime [γ'] phase formation during thermal processing.* --- #### **Physical Properties** Critical properties for wire applications and component design: | Property | Metric Value | Imperial Value | | :--- | :--- | :--- | | **Density** | 8.10 g/cm³ | 0.292 lb/in³ | | **Melting Range** | 1350 - 1400 °C | 2460 - 2550 °F | | **Specific Heat (20°C)** | 440 J/kg·K | 0.105 Btu/lb·°F | | **Thermal Conductivity (20°C)** | 12.0 W/m·K | 83.3 Btu·in/hr·ft²·°F | | **Thermal Expansion Coefficient (20-100°C)** | 12.5 μm/m·°C | 6.9 μin/in·°F | | **Modulus of Elasticity** | 210 GPa | 30.5 x 10⁶ psi | | **Electrical Resistivity** | 1.20 μΩ·m | - | --- #### **Mechanical Properties** Properties vary based on wire diameter and heat treatment condition: **Annealed Condition (Typical):** * **Tensile Strength:** 950-1100 MPa (138-160 ksi) * **Yield Strength (0.2% Offset):** 600-750 MPa (87-109 ksi) * **Elongation:** 25-35% * **Reduction of Area:** 35-50% **Precipitation Hardened Condition:** * **Tensile Strength:** 1250-1400 MPa (181-203 ksi) * **Yield Strength (0.2% Offset):** 1050-1200 MPa (152-174 ksi) * **Elongation:** 15-25% * **Hardness:** 36-44 HRC --- #### **International Standards** Alloy 722 Wire complies with major international specifications: **Welding Wire Standards:** * **AWS A5.14:** Specification for Nickel and Nickel-Alloy Bare Welding Electrodes and Rods * **AMS 5832:** Welding Wire, Nickel Alloy, Corrosion and Heat Resistant * **ASTM B637:** Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock **Wire Product Standards:** * **ASTM B906:** General Requirements for Flat-Rolled Nickel and Nickel Alloys * **MIL-SPEC:** MIL-E-21562 and MIL-R-5031 for specialized applications * **ISO 9724:** Nickel and Nickel Alloy Forgings (for forging quality wire) **Quality Assurance Standards:** * **ISO 9001:** Quality Management Systems * **ASME SFA-5.14:** Specification for Nickel and Nickel-Alloy Bare Welding Electrodes and Rods * **NADCAP:** National Aerospace and Defense Contractors Accreditation Program --- #### **Product Applications** **Welding Consumable Applications:** * **Gas Tungsten Arc Welding (GTAW/TIG):** Bare wire for joining Alloy 722 components * **Gas Metal Arc Welding (GMAW/MIG):** Wire for automated welding processes * **Plasma Arc Welding (PAW):** High-precision welding of critical components * **Repair and Maintenance:** Welding repair of turbine components and high-temperature parts **Component Manufacturing Applications:** * **Fasteners:** High-strength bolts, studs, screws, and special threaded components * **Springs:** High-temperature springs for valves, actuators, and safety systems * **Wire Mesh:** High-temperature filters, screens, and woven products * **Electrical Components:** Heating elements, resistance wires, and electrical contacts **Specialized Applications:** * **Additive Manufacturing:** Wire for directed energy deposition (DED) processes * **Thermal Spray:** Wire arc spraying for corrosion-resistant coatings * **Cold Heading:** Wire for producing complex shaped components * **Medical Devices:** Surgical instruments and specialized medical components --- #### **Key Advantages** * **Excellent Weldability:** Produces sound, crack-resistant welds with matching composition * **Enhanced High-Temperature Strength:** Maintains high mechanical properties up to 815°C (1500°F) * **Superior Corrosion Resistance:** Excellent resistance to oxidation and sulfidation * **Good Fabricability:** Can be drawn, formed, and machined using standard techniques * **Consistent Quality:** Uniform diameter and surface finish throughout wire length * **Thermal Stability:** Maintains properties during thermal cycling and prolonged exposure * **Fatigue Resistance:** Excellent performance under cyclic loading conditions * **Versatile Applications:** Suitable for both welding and component manufacturing **Available Forms & Sizes:** * **Spooled Wire:** 0.5mm to 2.5mm diameter on various spool sizes * **Straight Lengths:** 1.0mm to 6.0mm diameter in cut lengths * **Special Packaging:** Custom spooling and packaging to meet specific requirements **Surface Conditions:** * **Bright Finish:** Clean, scale-free surface for welding applications * **Annealed Scale:** Heat-treated condition with surface oxide * **Chemically Cleaned:** Precision cleaned for critical applications **Note:** *Inconel® is a registered trademark of Special Metals Corporation. Alloy 722 wire is typically supplied in the annealed condition for optimum formability and weldability, with subsequent aging treatment (730-760°C/1350-1400°F for 8-16 hours) to develop full mechanical properties. Proper storage conditions and handling procedures are essential to prevent surface contamination and maintain wire quality. Comprehensive certification including chemical analysis, mechanical properties, and dimensional reports are provided with each shipment.*

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 1805 gallon liquid totes Special package is available on request.