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

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

### **Product Introduction: Alloy 22 (Hastelloy® C-22) Fittings / UNS N06022** **Precision-Engineered Connectors for Severe Corrosive Service** **Hastelloy® C-22 Fittings** (UNS N06022) represent the highest standard in corrosion-resistant piping components, designed to maintain system integrity in the most aggressive chemical environments. These nickel-chromium-molybdenum-tungsten alloy fittings provide exceptional resistance to both oxidizing and reducing media, making them the ideal choice for critical connections in chemical processing, pharmaceutical, and pollution control systems. With superior performance in pitting, crevice corrosion, and stress corrosion cracking environments, C-22 fittings ensure reliable, long-term performance where failure is not an option. Our comprehensive range of C-22 fittings is manufactured to exacting standards, ensuring perfect dimensional compatibility and leak-free performance in demanding applications. --- #### **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 | * **Optimized Corrosion Resistance:** The balanced composition provides **Chromium** for oxidizing conditions (nitric acid, ferric chloride) combined with **Molybdenum** and **Tungsten** for reducing environments (hydrochloric acid, sulfuric acid). Ultra-low **Carbon** content ensures immunity to sensitization during welding. --- #### **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) at 70°F | | **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 fittings are supplied in solution-annealed condition to optimize corrosion resistance. | Property | Typical Value | | :--- | :--- | | **Tensile Strength** | 110 ksi (758 MPa) min | | **Yield Strength (0.2% Offset)** | 52 ksi (358 MPa) min | | **Elongation** | 65% min | | **Hardness** | Rb 90 (HRB 90) max | | **Pressure Rating** | Schedule 5S to XXS per ASME B16.11 | --- #### **4. Corrosion Resistance & Product Applications** **Exceptional Corrosion Performance:** - **Universal Chemical Resistance:** Excellent in both oxidizing and reducing environments - **Localized Corrosion:** Superior resistance to pitting and crevice corrosion in chlorides - **Stress Corrosion Cracking:** High immunity to chloride-induced SCC - **Mixed Chemical Capability:** Stable performance in complex process streams - **Oxidizing Salt Compatibility:** Resists contaminated acids with oxidizing metal ions **Primary Applications:** * **Chemical Processing Industry:** - Reactor inlet/outlet connections - Heat exchanger nozzles and headers - Pump suction and discharge fittings - Valve trim and body components * **Pharmaceutical & Bioprocessing:** - High-purity process line fittings - CIP/SIP system components - Bioreactor connections * **Pollution Control Systems:** - FGD scrubber piping networks - Chemical injection point fittings - Effluent treatment system components * **Industrial Processing:** - Electroplating and pickling line fittings - Acid recovery system components - Solvent processing connections --- #### **5. International Standards** Our Hastelloy C-22 Fittings comply with major international standards: **Primary Standards:** * **ASTM B366:** Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings * **ASME SB-366:** Code qualification for pressure applications * **MSS SP-43:** Wrought Stainless Steel Butt welding Fittings * **ASME B16.9:** Factory-Made Wrought Butt welding Fittings * **ASME B16.11:** Forged Steel Fittings, Socket-Welding and Threaded * **UNS:** **UNS N06022** * **EURONORM:** **2.4602** **Fitting Types Available:** * **Butt-weld Fittings:** Elbows (45°, 90°, 180°), Tees, Reducers, Caps * **Socket-weld Fittings:** Elbows, Tees, Unions, Couplings * **Threaded Fittings:** NPT threaded components * **Special Fittings:** Crosses, Lap joint stub ends, Nipples --- #### **Why Choose Our Hastelloy C-22 Fittings?** * **Precision Manufacturing:** Exact dimensional compliance with ASME B16.9/B16.11 * **Complete Traceability:** Certified Mill Test Reports with full material traceability * **Superior Surface Finish:** Smooth internal surfaces minimize corrosion initiation points * **Comprehensive Quality Control:** 100% dimensional inspection and quality verification * **Technical Expertise:** Engineering support for fitting selection and system design * **Reliable Performance:** Leak-proof connections ensured by precise manufacturing **Contact us today** for complete technical specifications, pricing, and application engineering support. Our team provides expert solutions for your most demanding corrosion-resistant piping system requirements. *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 2737 gallon liquid totes Special package is available on request.