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

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

### **Product Introduction: Alloy 22 (Hastelloy® C-22) Plate / UNS N06022** **Premium Corrosion-Resistant Plate Solution for Extreme Service Conditions** **Hastelloy® C-22 Plate** (UNS N06022) represents the gold standard in corrosion-resistant plate materials, offering unparalleled performance in the most aggressive industrial environments. This nickel-chromium-molybdenum-tungsten alloy plate delivers exceptional resistance to both oxidizing and reducing media, making it the material of choice for critical applications where equipment failure is not an option. With superior resistance to pitting, crevice corrosion, and stress corrosion cracking, C-22 plate ensures long-term reliability in chemical processing, pollution control, and pharmaceutical applications. Our C-22 plates are manufactured to exacting standards, providing consistent mechanical properties, excellent flatness, and superior surface quality for fabrication into pressure vessels, reactors, and other critical equipment. --- #### **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 | * **Advanced Material Design:** The strategic combination of **Chromium** (providing oxidation resistance) with **Molybdenum** and **Tungsten** (delivering reducing acid resistance) creates a universally corrosion-resistant alloy. The ultra-low **Carbon** content ensures immunity to sensitization during welding operations. --- #### **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 plate is supplied in solution-annealed condition to optimize corrosion resistance and facilitate fabrication. | 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:** - **Universal Chemical Resistance:** Outstanding performance in both oxidizing (nitric acid, ferric chloride) and reducing (hydrochloric acid, sulfuric acid) environments - **Localized Attack Resistance:** Superior resistance to pitting and crevice corrosion in chloride-containing solutions - **Stress Corrosion Cracking:** Excellent immunity to chloride-induced SCC - **Mixed Chemical Capability:** Maintains integrity in complex and fluctuating process streams - **Oxidizing Salt Compatibility:** Resists attack from contaminated acids containing oxidizing metal ions **Primary Applications:** * **Pressure Vessels & Reactors:** - Chemical process reactors - Pressure vessels for aggressive media - Autoclaves and digesters * **Pollution Control Equipment:** - Flue gas desulfurization (FGD) system components - Scrubber vessels and ducting - Chimney liners and quench towers * **Chemical Processing:** - Column and tower fabrications - Tank linings and clad plate applications - Heat exchanger plates and headers * **Pharmaceutical & Food Processing:** - High-purity process vessels - CIP (Clean-in-Place) system components - Reactors for pharmaceutical synthesis * **Nuclear Industry:** - Waste processing equipment - Containment vessels and liners --- #### **5. International Standards** Our Hastelloy C-22 Plates conform to 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 vessel applications * **UNS:** **UNS N06022** * **EURONORM:** **2.4602** * **DIN:** DIN 17744 - NiCr21Mo14W * **ISO:** ISO 15156-3 / NACE MR0175 (Sour Service) **Technical Specifications:** * **Thickness Range:** 1/8" to 4" (3mm to 100mm) and thicker * **Widths:** Up to 120" (3048mm) available * **Lengths:** Custom lengths up to 480" (12,192mm) * **Condition:** Solution Annealed and Pickled/Passivated * **Surface Finish:** Standard mill finish or customized finishes available --- #### **Why Choose Our Hastelloy C-22 Plate?** * **Unmatched Quality Assurance:** Complete traceability with certified Mill Test Reports meeting ASTM/ASME requirements * **Superior Fabrication Characteristics:** Excellent weldability and formability for complex fabrications * **Consistent Performance:** Guaranteed mechanical properties and corrosion resistance across entire plate * **Technical Expertise:** Comprehensive support for material selection, fabrication guidelines, and welding procedures * **Reliable Supply:** Extensive inventory and custom cutting capabilities to meet project requirements **Contact our technical team** for detailed specifications, fabrication guidance, and application support. We provide expert solutions for your most demanding corrosion-resistant plate 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 2734 gallon liquid totes Special package is available on request.