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

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

### **Product Introduction: Alloy 22 (Hastelloy® C-22) Sheet / UNS N06022** **Thin-Gauge Excellence for Critical Corrosion Applications** **Hastelloy® C-22 Sheet** (UNS N06022) represents the pinnacle of thin-gauge corrosion-resistant materials, offering exceptional performance in demanding industrial applications. This nickel-chromium-molybdenum-tungsten alloy sheet delivers superior resistance to both oxidizing and reducing media, making it an ideal choice for applications requiring lightweight yet durable corrosion protection. With excellent formability and weldability, C-22 sheet can be fabricated into complex components while maintaining its outstanding corrosion resistance properties. Our C-22 sheets are manufactured to precise dimensional tolerances with superior surface finishes, ensuring consistent performance in chemical processing, pharmaceutical, and pollution control 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 Chemistry:** The precise balance of **Chromium** (for oxidizing conditions) with **Molybdenum** and **Tungsten** (for reducing environments) provides comprehensive corrosion protection. The ultra-low **Carbon** content ensures excellent weldability without sensitization issues. --- #### **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) at 70°F | | **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) 70-200°F | | **Modulus of Elasticity** | 29.5 x 10⁶ psi (203 GPa) | --- #### **3. Mechanical Properties (Typical for Annealed Condition)** C-22 sheet is supplied in solution-annealed condition to optimize formability and corrosion resistance. | Property | Typical Value at Room Temperature | | :--- | :--- | | **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 | --- #### **4. Corrosion Resistance & Product Applications** **Exceptional Corrosion Performance:** - **Broad Spectrum Resistance:** Excellent performance in both oxidizing (nitric acid, ferric chloride) and reducing (hydrochloric acid, sulfuric acid) environments - **Localized Corrosion Protection:** Superior resistance to pitting and crevice corrosion in chloride-containing solutions - **Stress Corrosion Cracking:** High immunity to chloride-induced SCC - **Mixed Chemical Capability:** Maintains integrity in complex and fluctuating process streams - **Oxidizing Salt Resistance:** Withstands contaminated acids containing oxidizing metal ions **Primary Applications:** * **Chemical Processing Equipment:** - Vessel linings and cladding - Tank covers and baffles - Expansion joints and flexible connectors * **Pollution Control Systems:** - FGD system duct liners - Scrubber internals and mist eliminators - Stack liners and dampers * **Pharmaceutical & Food Processing:** - Process vessel fabrication - Clean room components - CIP system parts * **Heat Exchanger Components:** - Plate heat exchanger sheets - Compensator plates - Heat shield panels * **Architectural Applications:** - Roofing and flashing for aggressive environments - Chemical plant architectural elements --- #### **5. International Standards** Our Hastelloy C-22 Sheets comply with major international standards: **Primary Standards:** * **ASTM B575:** Standard Specification for Low-Carbon Nickel-Chromium-Molybdenum, Nickel-Chromium-Molybdenum-Tungsten Alloy Plate, Sheet, and Strip * **ASME SB-575:** Code qualification for pressure applications * **UNS:** **UNS N06022** * **EURONORM:** **2.4602** * **DIN:** DIN 17744 - NiCr21Mo14W * **ISO:** ISO 15156-3 / NACE MR0175 (Sour Service) **Technical Specifications:** * **Thickness Range:** 0.015" to 0.187" (0.38mm to 4.75mm) * **Widths:** Up to 48" (1219mm) standard, wider available * **Lengths:** Standard 96" (2438mm) or custom lengths * **Condition:** Solution Annealed and Pickled * **Surface Finish:** Standard 2B finish, polished finishes available --- #### **Why Choose Our Hastelloy C-22 Sheet?** * **Consistent Quality:** Full traceability with certified Mill Test Reports meeting ASTM requirements * **Excellent Fabrication Characteristics:** Superior formability and weldability for complex fabrications * **Precision Tolerances:** Consistent gauge control and dimensional accuracy * **Surface Quality:** Superior surface finishes for corrosion resistance and appearance * **Technical Support:** Comprehensive assistance with material selection and fabrication techniques **Contact us today** for detailed specifications, technical data, and application support. Our team provides expert solutions for your thin-gauge corrosion-resistant 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 2735 gallon liquid totes Special package is available on request.