Alloy X,Hastelloy X Tube,UNS N06002,E FORU

British Specs:，American Specs:AMS 5755 Bar and Forgings AMS 5786 Welding Wire，German Specs:

### **Product Datasheet: Alloy X / Hastelloy® X Tube (UNS N06002)** **Alloy X**, commercially known as **Hastelloy® X**, is a nickel-chromium-iron-molybdenum superalloy specifically designed for extreme high-temperature service. Registered under the unified numbering system as **UNS N06002**, this solid-solution strengthened nickel-based alloy offers an outstanding combination of high-temperature strength, oxidation resistance, and fabricability. The **tube** product form is engineered for heat exchange, instrumentation, and process applications in severe thermal environments up to 1200°C (2200°F). --- ### **1. Chemical Composition** The chemical composition of Hastelloy X (UNS N06002) tube conforms to the following specifications (balance is Nickel): | Element | Content (%) | | :--- | :--- | | **Nickel (Ni)** | Balance | | **Chromium (Cr)** | 20.5 - 23.0 | | **Iron (Fe)** | 17.0 - 20.0 | | **Molybdenum (Mo)** | 8.0 - 10.0 | | **Cobalt (Co)** | 0.5 - 2.5 | | **Tungsten (W)** | 0.2 - 1.0 | | **Carbon (C)** | 0.05 - 0.15 | | **Manganese (Mn)** | ≤ 1.00 | | **Silicon (Si)** | ≤ 1.00 | | **Phosphorus (P)** | ≤ 0.040 | | **Sulfur (S)** | ≤ 0.030 | | **Boron (B)** | ≤ 0.010 | * **Functional Role of Key Elements:** * **Ni (Nickel)**: Forms the austenitic matrix, providing fundamental corrosion resistance and microstructural stability at high temperatures. * **Cr (Chromium)**: Enables formation of a protective chromium oxide layer (Cr₂O₃), delivering exceptional oxidation resistance. * **Mo & W (Molybdenum & Tungsten)**: Provide solid-solution strengthening, significantly enhancing high-temperature creep resistance and strength. * **C (Carbon)**: Contributes to elevated temperature strength through solid solution strengthening. --- ### **2. Physical Properties** Characteristic physical properties for Hastelloy X tube at room temperature: | Property | Metric Value | Imperial Value | | :--- | :--- | :--- | | **Density** | 8.22 g/cm³ | 0.297 lb/in³ | | **Melting Point** | 1260 - 1355 °C | 2300 - 2475 °F | | **Specific Heat (20°C)** | 455 J/kg·K | 0.109 Btu/lb·°F | | **Thermal Conductivity (20°C)** | 11.9 W/m·K | 82.7 Btu·in/hr·ft²·°F | | **Mean Coefficient of Thermal Expansion (20-1000°C)** | 14.0 μm/m·°C | 7.8 x10⁻⁶ in/in·°F | | **Modulus of Elasticity** | 205 GPa | 29.7 x 10⁶ psi | --- ### **3. Mechanical Properties** Typical mechanical properties for annealed tube: | Property | Typical Value | | :--- | :--- | | **Tensile Strength** | 655 - 860 MPa (95 - 125 ksi) | | **Yield Strength (0.2% Offset)** | 310 - 585 MPa (45 - 85 ksi) | | **Elongation (in 50mm)** | 35 - 55% | | **Hardness (Rockwell B)** | 85 - 100 HRB | * **High-Temperature Performance**: Hastelloy X tube maintains excellent mechanical integrity and shows outstanding resistance to oxidation, carburization, and sulfidation at temperatures up to 1200°C (2200°F). It demonstrates remarkable creep rupture strength and thermal fatigue resistance under sustained loading at elevated temperatures. --- ### **4. International Standards** Hastelloy X (UNS N06002) tube conforms to these international standards: | Standard Body | Standard Designation | Specification | | :--- | :--- | :--- | | **ASTM International** | **ASTM B622** | Seamless Pipe and Tube | | **ASTM International** | **ASTM B626** | Welded Tube | | **ASTM International** | **ASTM B619** | Welded Pipe | | **ASME** | **ASME SB-622/SB-626** | Pressure vessel applications | | **ASTM International** | **ASTM B163** | Seamless Condenser and Heat-Exchanger Tubes | | **European Standard** | **EN 10216-5** | Seamless steel tubes for pressure purposes | --- ### **5. Product Applications** Hastelloy X tube is specified for critical high-temperature and corrosive service applications: **Heat Exchanger Applications:** * Ethylene cracking furnace tubes * Reformer exchanger tubes * Waste heat recovery units * High-temperature recuperators * Process gas coolers **Industrial Furnace Applications:** * Radiant tubes * Heat treatment retorts * Thermocouple protection tubes * Process atmosphere tubes * Muffle furnace tubes **Aerospace & Defense:** * Jet engine heat exchanger tubes * Afterburner fuel injector tubes * Rocket motor cooling jackets * High-temperature hydraulic lines **Chemical Processing:** * High-temperature reactor tubes * Catalyst carrier tubes * Corrosive fluid transfer lines * High-pressure process tubing **Power Generation:** * Gas turbine recuperators * High-temperature boiler tubes * Superheater and reheater tubes * Nuclear reactor instrumentation --- ### **6. Available Specifications** * **Size Range**: 1/8" to 8" OD * **Wall Thickness**: 0.028" to 0.500" * **Type**: Seamless and welded * **Temper**: Annealed or stress-relieved * **Surface Finish**: Pickled, bright annealed, or descaled --- ### **7. Special Characteristics** * **Temperature Resistance**: Continuous service to 1200°C (2200°F) * **Oxidation Resistance**: Excellent resistance to scaling and oxidation * **Pressure Capability**: Suitable for high-pressure applications * **Corrosion Resistance**: Excellent resistance to carburization and sulfidation * **Fabricability**: Good weldability and formability characteristics --- **Disclaimer:** *Hastelloy® is a registered trademark of Haynes International. This information is for reference purposes. Always consult relevant material standards and manufacturer's technical data sheets for certified properties. Performance in specific applications should be verified through appropriate testing.*

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 1862 gallon liquid totes Special package is available on request.