Alloy 22，Hastelloy C-22 Bar(Round bar, Flat bar)，UNS N06022,E FORU

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

### **Product Introduction: Alloy 22 (Hastelloy® C-22) Bar / UNS N06022** **Round Bar & Flat Bar for Demanding Industrial Applications** **Hastelloy® C-22 Bar** (UNS N06022) is a nickel-chromium-molybdenum-tungsten alloy supplied in both round and flat bar forms, offering exceptional versatility for industrial applications. This alloy is specifically engineered to deliver outstanding corrosion resistance in a wide range of severe environments, including oxidizing and reducing media, while providing excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Our C-22 bar products combine superior material properties with precise dimensional tolerances, making them ideal for machining, fabrication, and structural components in the most demanding chemical processing, pollution control, and industrial sectors. --- #### **1. Chemical Composition (Weight %)** The carefully balanced composition ensures optimal performance across diverse corrosive conditions: | 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 | *Key Features:* - **Chromium** provides resistance to oxidizing media - **Molybdenum & Tungsten** deliver resistance to reducing conditions - **Low Carbon** content minimizes susceptibility to intergranular corrosion --- #### **2. Physical Properties** | Property | Value | | :--- | :--- | | **Density** | 0.315 lb/in³ (8.69 g/cm³) | | **Melting Point** | 1350 - 1380°C (2460 - 2520°F) | | **Specific Heat** | 0.095 Btu/lb-°F (398 J/kg-°K) at 70°F (21°C) | | **Thermal Conductivity** | 6.5 Btu-ft/hr-ft²-°F (11.2 W/m·K) at 70°F (21°C) | | **Mean Coefficient of Thermal Expansion** | 7.8 x 10⁻⁶ per °F (14.0 x 10⁻⁶ per °K) from 70-200°F | | **Modulus of Elasticity (Tension)** | 29.5 x 10⁶ psi (203 GPa) | --- #### **3. Mechanical Properties (Typical for Annealed Condition)** Hastelloy C-22 bars are typically supplied in the solution-annealed condition to ensure optimal corrosion resistance and machinability. | 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 | *Note:* The material can be cold worked to achieve higher strength levels when required for specific applications. --- #### **4. Corrosion Resistance & Product Applications** **Corrosion Resistance Characteristics:** - Excellent resistance to both oxidizing and reducing media - Superior performance in mixed acid environments including HNO₃/HF mixtures - Outstanding resistance to pitting, crevice corrosion, and stress corrosion cracking - Good performance in chloride-containing environments **Typical Applications by Product Form:** **Round Bar Applications:** - Pump shafts, valve stems, and fasteners in chemical processing - Agitator shafts and mixer components - Mechanical seals and bearing sleeves - Nozzles and thermowells for corrosive service **Flat Bar Applications:** - Structural supports and brackets in corrosive environments - Wear strips and guide rails in processing equipment - Fabricated flanges and custom fittings - Repair and maintenance components for existing equipment **Industry Applications:** - **Chemical Processing:** Reactor internals, heat exchanger parts - **Pollution Control:** FGD system components, scrubber parts - **Pharmaceutical:** Process equipment requiring high purity - **Marine Engineering:** Components exposed to seawater and salt spray - **Pulp & Paper:** Bleach plant equipment and processing machinery --- #### **5. International Standards** Our Hastelloy C-22 bars conform to the following international standards: **Material Standards:** - **ASTM:** ASTM B574 (Standard Specification for Low-Carbon Nickel-Chromium-Molybdenum Alloy Rod and Bar) - **UNS:** UNS N06022 - **ASME:** SA SB-574 - **EURONORM:** 2.4602 - **DIN:** DIN 17744 - NiCr21Mo14W - **ISO:** ISO 15156-3 / NACE MR0175 (Sour Service Applications) **Product Specifications:** - **Round Bar Sizes:** 1/4" to 12" diameter (6mm to 300mm) - **Flat Bar Sizes:** 1/8" to 4" thickness, 1/2" to 12" width - **Length:** Standard random lengths or cut-to-size - **Condition:** Solution annealed and pickled --- #### **Why Choose Our Hastelloy C-22 Bars?** **Quality Assurance:** - Full traceability with certified Mill Test Reports - Compliance with ASTM, ASME, and other international standards - Consistent microstructure and mechanical properties - Proper solution annealing for optimal corrosion resistance **Technical Advantages:** - Excellent machinability in annealed condition - Good weldability using matching filler metals - Versatile product forms for various applications - Technical support for material selection and fabrication **Supply Capabilities:** - Comprehensive inventory of round and flat bar sizes - Custom cutting and machining services available - Competitive pricing and reliable delivery - Technical expertise in corrosion-resistant alloys --- **Contact Us Today** For pricing, technical specifications, or application assistance, please contact our technical sales team. We provide comprehensive support for your corrosion-resistant material 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 2731 gallon liquid totes Special package is available on request.