Alloy X,Hastelloy X Pipe,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 Pipe (UNS N06002)** **Alloy X**, commercially known as **Hastelloy® X**, is a nickel-chromium-iron-molybdenum superalloy specifically formulated for extreme high-temperature service. Registered under the unified numbering system as **UNS N06002**, this solid-solution strengthened nickel-based alloy offers outstanding high-temperature strength, exceptional oxidation resistance, and excellent fabricability. The **pipe** product form is engineered for conveying aggressive media, high-temperature gases, and for structural applications in severe thermal environments up to 1200°C (2200°F). --- ### **1. Chemical Composition** The chemical composition of Hastelloy X (UNS N06002) pipe 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 pipe 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 pipe: | 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 pipe 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) pipe conforms to these international standards: | Standard Body | Standard Designation | Specification | | :--- | :--- | :--- | | **ASTM International** | **ASTM B619** | Welded Pipe | | **ASTM International** | **ASTM B622** | Seamless Pipe and Tube | | **ASTM International** | **ASTM B626** | Welded Tube | | **ASME** | **ASME SB-619/SB-622/SB-626** | Pressure vessel applications | | **ASTM International** | **ASTM B729** | Seamless UNS N08020 Pipe | | **European Standard** | **EN 10216-5** | Seamless steel tubes for pressure purposes | --- ### **5. Product Applications** Hastelloy X pipe is specified for critical high-temperature and corrosive service applications: **Chemical & Petrochemical Processing:** * Ethylene cracking furnace transfer lines * Reformer unit process piping * High-temperature reactor connections * Corrosive chemical processing lines * Pyrolysis furnace components **Industrial Furnace & Heat Treatment:** * Radiant tube assemblies * Combustion system piping * Heat treatment atmosphere lines * Process gas handling systems * Annealing furnace components **Power Generation:** * Gas turbine exhaust ducting * High-temperature steam lines * Heat recovery steam generator systems * Boiler and superheater connections * High-temperature pressure piping **Aerospace & Defense:** * Engine test stand piping * High-temperature hydraulic systems * Exhaust ducting components * Rocket propulsion systems **Industrial Gas Processing:** * High-temperature gas transmission * Process heater tubes * Thermal oxidizer systems * High-temperature compressor stations --- ### **6. Available Specifications** * **Size Range**: 1/8" to 24" NPS * **Schedule**: SCH 10S to SCH XXS * **Type**: Seamless and welded * **Length**: Single random, double random, cut to length * **Ends**: Plain end, beveled end, threaded --- ### **7. Fabrication Characteristics** * **Weldability**: Excellent using GTAW, GMAW, SMAW processes * **Forming**: Good cold and hot forming characteristics * **Heat Treatment**: Solution anneal at 1177°C (2150°F) * **Machining**: Requires appropriate tools and techniques --- **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 1861 gallon liquid totes Special package is available on request.