Alloy 722，Inconel 722 Plate，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 Plate (UNS N07722)** #### **Overview** **Alloy 722 Plate** (commercially known as **Inconel® 722 Plate**) is a premium nickel-chromium superalloy supplied in plate form, offering exceptional strength and corrosion resistance across a wide temperature range from cryogenic conditions to 815°C (1500°F). This precipitation-hardenable material is specifically engineered for structural applications in extreme environments, maintaining outstanding mechanical properties and microstructural stability under prolonged exposure to high temperatures and aggressive corrosive media. The plate product undergoes controlled thermo-mechanical processing and precise heat treatments to ensure uniform grain structure, consistent properties throughout the thickness, and reliable performance in critical aerospace, energy, and chemical processing applications. The alloy's superior characteristics are achieved through a sophisticated precipitation-hardening mechanism involving gamma prime [γ'] phase formation, providing exceptional strength retention and microstructural stability after extended exposure to elevated temperatures. --- #### **Chemical Composition** The chemical composition of Alloy 722 Plate (UNS N07722) is carefully balanced for optimal performance: | 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 provides enhanced solid solution strengthening and precipitation hardening capability through carefully balanced aluminum and titanium ratios.* --- #### **Physical Properties** Critical properties for structural design and fabrication engineering: | 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** Enhanced mechanical properties achieved through optimized heat treatment: **Solution Annealed + Aged Condition:** * **Ultimate Tensile Strength:** 1300-1450 MPa (188-210 ksi) * **Yield Strength (0.2% Offset):** 1100-1250 MPa (160-181 ksi) * **Elongation:** 12-20% * **Hardness:** 38-46 HRC **Elevated Temperature Performance:** * **0.2% Yield Strength at 650°C (1200°F):** ≥ 950 MPa (138 ksi) * **Stress Rupture Life at 730°C (1350°F):** ≥ 100 hours at 310 MPa (45 ksi) * **Creep Resistance:** Excellent up to 815°C (1500°F) --- #### **International Standards** Alloy 722 Plate conforms to several international specifications: **Aerospace Material Specifications:** * **AMS 5596:** Sheet, Strip, and Plate * **AMS 5597:** Solution Heat Treated and Aged Condition **ASTM Standards:** * **ASTM B670:** Plate, Sheet, and Strip for High-Temperature Service * **ASTM B906:** General Requirements for Flat-Rolled Nickel and Nickel Alloys **Other International Standards:** * **ISO 6208:** Nickel and nickel alloy plates * **DIN 17750:** Nickel and nickel alloy plates - Technical delivery conditions * **GB/T 2054:** Chinese standard for nickel and nickel alloy plates --- #### **Product Applications** Alloy 722 plates serve as fundamental material for critical components across multiple industries: **Aerospace & Defense:** * **Aircraft Structures:** Engine mounts, fuselage components, wing attachments * **Rocket Components:** Motor cases, thrust structures, interstage sections * **Satellite Systems:** Structural platforms, mounting plates, support frames * **Missile Components:** Casing sections, structural panels **Oil & Gas Industry:** * **Pressure Vessels:** Reactor vessels, separator components, pressure containers * **Wellhead Equipment:** Flanges, valve bodies, Christmas tree components * **Subsea Structures:** Manifold bases, template components, support frames * **Process Equipment:** Heat exchanger plates, reactor internals **Power Generation:** * **Gas Turbine Components:** Casing sections, support rings, mounting plates * **Nuclear Applications:** Core support structures, shielding components * **Heat Exchangers:** Header plates, support plates, baffle components * **Boiler Components:** High-pressure sections, support structures **Industrial Applications:** * **Chemical Processing:** Reactor vessels, distillation column internals * **Heat Treatment:** Furnace fixtures, hearth plates, radiant tubes * **Marine Engineering:** Hull components for corrosive service, deck plates * **Specialized Equipment:** High-temperature processing equipment components --- #### **Key Advantages** * **Enhanced High-Temperature Strength:** Superior mechanical properties retention up to 815°C (1500°F) * **Excellent Oxidation Resistance:** Outstanding performance in oxidizing atmospheres * **Superior Corrosion Resistance:** Excellent resistance to sulfidation and corrosive media * **Excellent Weldability:** Can be welded using conventional methods with proper technique * **Outstanding Fatigue Resistance:** Superior performance under cyclic loading conditions * **Good Fabricability:** Can be machined, formed, and welded using standard industrial equipment * **Cryogenic Toughness:** Maintains excellent impact properties at cryogenic temperatures * **Uniform Properties:** Consistent mechanical properties throughout the plate thickness **Available Forms & Sizes:** * **Thickness Range:** 3mm to 150mm (0.125" to 6") * **Width Range:** Up to 2000mm (78") * **Length Range:** Up to 6000mm (236") * **Surface Finish:** Hot rolled, annealed, pickled, or machined **Heat Treatment Specifications:** * **Solution Treatment:** 1100-1150°C (2010-2100°F) followed by rapid cooling * **Aging Treatment:** 730-760°C (1350-1400°F) for 8-16 hours, air cool * **Stress Relieving:** Available for formed and welded components **Quality Assurance:** * **Ultrasonic Testing:** Full plate scanning for internal defects * **Chemical Analysis:** Complete composition verification * **Mechanical Testing:** Tensile, impact, and hardness testing * **Microstructural Examination:** Grain size and phase distribution analysis **Note:** *Inconel® is a registered trademark of Special Metals Corporation. Alloy 722 plate is typically supplied in the solution annealed condition for optimum formability, with subsequent aging treatment to develop full mechanical properties. The material demonstrates good weldability but requires proper post-weld heat treatment to restore properties in the heat-affected zone. Comprehensive material certification including chemical analysis, mechanical properties, and non-destructive testing reports are provided for critical 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 1798 gallon liquid totes Special package is available on request.