Alloy 22，Hastelloy C-22 Forgings，UNS N06022,E FORU

British Specs:，American Specs:，German Specs:WS 2.4602

### **Product Introduction: Alloy 22 (Hastelloy® C-22) Forgings / UNS N06022** **Superior Wrought Structure for Critical Corrosion Applications** **Hastelloy® C-22 Forgings** (UNS N06022) represent the pinnacle of manufacturing excellence for critical components in highly corrosive environments. Through the controlled forging process, this nickel-chromium-molybdenum-tungsten alloy develops enhanced mechanical properties and optimized grain structure, delivering superior performance in the most demanding chemical processing, oil and gas, and pollution control applications. The forging process ensures maximum structural integrity, improved fatigue resistance, and reliable performance under extreme conditions. Our C-22 forgings are manufactured using advanced thermo-mechanical processing techniques to achieve optimal microstructural characteristics and consistent mechanical properties throughout the component. --- #### **1. Chemical Composition (Weight %)** | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | Balance | | **Chromium (Cr)** | 20.0 - 22.5 | | **Molybdenum (Mo)** | 12.5 - 14.5 | | **Tungsten (W)** | 2.5 - 3.5 | | **Iron (Fe)** | 2.0 - 6.0 | | **Cobalt (Co)** | 2.0 max | | **Vanadium (V)** | 0.35 max | | **Silicon (Si)** | 0.08 max | | **Manganese (Mn)** | 0.50 max | | **Carbon (C)** | 0.015 max | | **Phosphorus (P)** | 0.02 max | | **Sulfur (S)** | 0.02 max | * **Enhanced Material Integrity:** The forging process refines the alloy's microstructure, while the balanced composition of **Chromium**, **Molybdenum**, and **Tungsten** provides comprehensive corrosion resistance across both oxidizing and reducing environments. --- #### **2. Physical Properties** | Property | Value | | :--- | :--- | | **Density** | 0.315 lb/in³ (8.69 g/cm³) | | **Melting Range** | 1350 - 1380°C (2460 - 2520°F) | | **Specific Heat** | 0.095 Btu/lb-°F (398 J/kg-°K) | | **Thermal Conductivity** | 6.5 Btu-ft/hr-ft²-°F (11.2 W/m·K) | | **Mean Coefficient of Thermal Expansion** | 7.8 x 10⁻⁶ per °F (14.0 x 10⁻⁶ per °K) | | **Modulus of Elasticity** | 29.5 x 10⁶ psi (203 GPa) | --- #### **3. Mechanical Properties** C-22 forgings are typically supplied in solution-annealed condition to ensure optimal corrosion resistance. | Property | Minimum Requirements | Typical Values | | :--- | :--- | :--- | | **Tensile Strength** | 110 ksi (758 MPa) | 115-130 ksi (793-896 MPa) | | **Yield Strength (0.2% Offset)** | 52 ksi (358 MPa) | 55-65 ksi (379-448 MPa) | | **Elongation** | 65% | 68-75% | | **Reduction of Area** | - | 70-80% | | **Hardness** | Rb 90 max | Rb 85-90 | --- #### **4. Corrosion Resistance & Product Applications** **Forging-Enhanced Performance:** - **Superior Structural Integrity:** Optimized grain flow pattern provides enhanced resistance to mechanical and thermal stresses - **Improved Fatigue Strength:** Refined microstructure offers superior resistance to cyclic loading - **Enhanced Toughness:** Directional grain structure provides better impact resistance - **Reduced Defect Probability:** Forging process eliminates porosity and internal voids **Critical Applications:** * **Valve & Pump Components:** - Forged valve bodies and bonnets - Pump casings and impellers - Shafts and stems for severe service * **Chemical Processing Equipment:** - Forged reactor components - Agitator shafts and blades - Heat exchanger headers and nozzles * **Oil & Gas Industry:** - Wellhead components - Christmas tree fittings - Downhole tool components * **Aerospace & Defense:** - Engine components - Missile system parts - Naval vessel fittings * **Power Generation:** - Turbine blades and discs - Generator components - Nuclear waste handling equipment --- #### **5. International Standards** Our Hastelloy C-22 Forgings meet rigorous international specifications: **Primary Standards:** * **ASTM B564:** Standard Specification for Nickel Alloy Forgings * **ASME SB-564:** Code qualification for pressure applications * **ASTM B462:** Forged or Rolled UNS N06022 Alloy Pipe Flanges * **NACE MR0175/ISO 15156:** Compliance for sour service applications * **UNS:** **UNS N06022** * **EURONORM:** **2.4602** **Forging Capabilities:** * **Weight Range:** 1 kg to 2000 kg * **Size Range:** Up to 2000 mm in diameter * **Process Types:** Open die forgings, closed die forgings, ring rollings * **Quality Levels:** Commercial quality, aircraft quality, nuclear quality --- #### **Why Choose Our Hastelloy C-22 Forgings?** * **Optimized Grain Structure:** Controlled forging process ensures directional grain flow for enhanced mechanical properties * **Superior Quality Assurance:** Stringent NDT testing including ultrasonic, dye penetrant, and radiographic inspection * **Precision Machining:** Capability to supply near-net-shape forgings minimizing material waste * **Comprehensive Certification:** Full material traceability with certified heat analysis and mechanical test reports * **Technical Expertise:** Engineering support for forging design, material selection, and application optimization * **Proven Reliability:** Extensive experience in supplying forgings for critical service applications worldwide **Contact our forging specialists** to discuss your specific component requirements. We provide comprehensive technical support and customized solutions for your most demanding corrosion-resistant forging applications. *Hastelloy® is a registered trademark of Haynes International Inc.*

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 2738 gallon liquid totes Special package is available on request.