Alloy 22，Hastelloy C-22 Other/Similar Specs，UNS N06022,E FORU

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

### **Product Introduction: Alloy 22 (Hastelloy® C-22) - Other Forms & Related Specifications / UNS N06022** **Comprehensive Material Solutions for Extreme Corrosion Environments** **Hastelloy® C-22** (UNS N06022) represents the gold standard in nickel-chromium-molybdenum-tungsten alloys, offering unparalleled corrosion resistance across diverse industrial applications. Beyond standard product forms, this superalloy is available in specialized configurations and shares compatibility with several related specifications, providing engineers and designers with versatile solutions for the most challenging corrosive conditions. This overview covers specialized product forms, comparable specifications, and unique applications that leverage the exceptional properties of this remarkable alloy. --- #### **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 | * **Universal Corrosion Resistance:** The strategic balance of **Chromium** (oxidizing media resistance), **Molybdenum** and **Tungsten** (reducing media resistance), combined with ultra-low **Carbon** content, provides exceptional performance across the broadest spectrum of corrosive conditions. --- #### **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) | | **Electrical Resistivity** | 46.0 μΩ·in (117 μΩ·cm) | --- #### **3. Mechanical Properties (Annealed Condition)** | Property | Minimum Values | Typical Values | | :--- | :--- | :--- | | **Tensile Strength** | 110 ksi (758 MPa) | 115-125 ksi (793-862 MPa) | | **Yield Strength (0.2% Offset)** | 52 ksi (358 MPa) | 55-60 ksi (379-414 MPa) | | **Elongation** | 65% | 68-72% | | **Hardness** | Rb 90 max | Rb 85-90 | --- #### **4. Specialized Product Forms & Applications** **A. Welding Products** - **C-22 Welding Electrodes:** AWS A5.11 Class ENiCrMo-10 - **C-22 Filler Metals:** AWS A5.14 Class ERNiCrMo-10 - **Applications:** Joining C-22 components, cladding less resistant materials, repair of corroded equipment **B. Fasteners & Hardware** - **Products:** Bolts, nuts, screws, washers, studs - **Standards:** ASTM A453 Grade 660, ASME SA453 - **Applications:** Critical connections in corrosive environments, pressure vessel closures **C. Clad Products** - **Explosion-Bonded Clad Plate:** C-22 bonded to carbon steel or other backing materials - **Weld Overlay Cladding:** C-22 applied as corrosion-resistant surface layer - **Applications:** Pressure vessels, reactors, large tanks requiring corrosion resistance **D. Custom Fabrications** - **Manufactured Components:** Custom-designed equipment, specialized vessels - **Heat Exchanger Tubing:** U-bends, coiled tubing, special configurations - **Applications:** Proprietary process equipment, retrofit components --- #### **5. Comparable & Related Specifications** **International Designations:** - **UNS:** N06022 - **ASTM/ASME:** B574, B575, B622, B619, B626, B366, B462, B564 - **EURONORM:** 2.4602 - **DIN:** DIN 17744 - NiCr21Mo14W - **ISO:** 15156-3 / NACE MR0175 - **AFNOR:** NC21CDu - **GOST:** ХН60МВФ **Similar Alloys & Selection Considerations:** * **Hastelloy C-276 (UNS N10276):** - Slightly lower chromium content - Good resistance but less versatile in oxidizing environments - Often considered for specific reducing acid applications * **Hastelloy C-2000 (UNS N06200):** - Higher copper content for sulfuric acid resistance - Different balance of alloying elements - Consider for specific chemical combinations * **Inconel 625 (UNS N06625):** - Lower molybdenum content - Excellent oxidation resistance but less effective in reducing acids - Better high-temperature strength --- #### **6. Special Applications & Industries** **Emerging Applications:** - **Renewable Energy:** Flue gas desulfurization systems, scrubber components - **Waste Treatment:** Hazardous waste processing equipment, incineration systems - **Pharmaceutical:** High-purity reaction vessels, cleaning system components - **Marine Engineering:** Offshore platform components, seawater handling systems - **Nuclear Industry:** Waste containment, processing equipment **Industry-Specific Standards Compliance:** - **ASME Boiler and Pressure Vessel Code:** Section VIII Division 1 - **NACE MR0175/ISO 15156:** Sulfide stress cracking resistant - **FDA Compliance:** For pharmaceutical and food processing applications - **PED 2014/68/EU:** European pressure equipment directive --- #### **Why Choose Our Comprehensive C-22 Solutions?** * **Technical Expertise:** Deep understanding of corrosion mechanisms and material selection * **Quality Assurance:** Full traceability with comprehensive certification packages * **Manufacturing Versatility:** Capability to supply standard and custom product forms * **Global Standards Compliance:** Products meeting international specifications * **Technical Support:** Engineering assistance for material selection and application optimization * **Proven Performance:** Extensive track record in critical applications worldwide **Contact our technical team** to discuss your specific requirements and explore how our comprehensive range of Hastelloy C-22 products and related specifications can provide optimal solutions for your most demanding corrosion challenges. *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 2739 gallon liquid totes Special package is available on request.