Alloy W,Hastelloy W Sheet,UNS N10004,E FORU

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

### **Product Datasheet: Alloy W / Hastelloy® W Sheet (UNS N10004)** **Overview** **Alloy W**, commercially known as **Hastelloy® W**, is a nickel-molybdenum-chromium superalloy specifically engineered for exceptional corrosion resistance in severe chemical environments. Designated as **UNS N10004**, this solid-solution strengthened nickel-based alloy offers outstanding performance in both oxidizing and reducing media. The **sheet** product form is precision-rolled to provide excellent surface finish and dimensional accuracy, making it ideal for fabrication of chemical processing equipment, linings, and components operating in aggressive environments up to **980°C (1800°F)**. --- ### **1. Chemical Composition** The chemical composition of Hastelloy W (UNS N10004) sheet conforms to the following specifications (balance is Nickel): | Element | Content (%) | |---------|-------------| | **Nickel (Ni)** | Balance | | **Molybdenum (Mo)** | 23.0 - 26.0 | | **Chromium (Cr)** | 4.5 - 7.0 | | **Iron (Fe)** | 4.0 - 7.0 | | **Cobalt (Co)** | ≤ 2.5 | | **Tungsten (W)** | 0.5 - 1.5 | | **Manganese (Mn)** | ≤ 1.0 | | **Silicon (Si)** | ≤ 1.0 | | **Vanadium (V)** | ≤ 0.2 | | **Carbon (C)** | ≤ 0.12 | | **Phosphorus (P)** | ≤ 0.04 | | **Sulfur (S)** | ≤ 0.03 | * **Functional Role of Key Elements:** * **Ni (Nickel)**: Forms the austenitic matrix, providing fundamental corrosion resistance and microstructural stability. * **Mo (Molybdenum)**: Enhances resistance to reducing acids and prevents localized corrosion. * **Cr (Chromium)**: Improves resistance to oxidizing environments and high-temperature oxidation. * **W (Tungsten)**: Provides solid-solution strengthening and enhances overall corrosion resistance. --- ### **2. Physical Properties** Characteristic physical properties for Hastelloy W sheet at room temperature: | Property | Metric Value | Imperial Value | |----------|--------------|----------------| | **Density** | 8.94 g/cm³ | 0.323 lb/in³ | | **Melting Point** | 1330 - 1380 °C | 2425 - 2515 °F | | **Specific Heat (20°C)** | 442 J/kg·K | 0.106 Btu/lb·°F | | **Thermal Conductivity (20°C)** | 10.9 W/m·K | 75.6 Btu·in/hr·ft²·°F | | **Mean Coefficient of Thermal Expansion (20-100°C)** | 11.5 μm/m·°C | 6.4 x10⁻⁶ in/in·°F | | **Modulus of Elasticity** | 205 GPa | 29.7 x 10⁶ psi | --- ### **3. Mechanical Properties** Typical mechanical properties for annealed Hastelloy W sheet: | Property | Typical Value | |----------|---------------| | **Tensile Strength** | 690 - 860 MPa (100 - 125 ksi) | | **Yield Strength (0.2% Offset)** | 310 - 485 MPa (45 - 70 ksi) | | **Elongation (in 50mm)** | 45 - 60% | | **Hardness (Rockwell B)** | 85 - 100 HRB | * **Corrosion Performance**: Excellent resistance to sulfuric acid at all concentrations, good performance in hydrochloric and phosphoric acids, and superior resistance to stress corrosion cracking. --- ### **4. International Standards** Hastelloy W (UNS N10004) sheet conforms to the following international standards: | Standard Body | Standard Designation | Product Form | |---------------|----------------------|--------------| | **ASTM International** | **ASTM B435** | Plate, Sheet, and Strip | | **ASME** | **ASME SB-435** | Pressure Vessel Components | | **ASTM International** | **ASTM B906** | General Requirements for Flat-Rolled Nickel Alloys | | **European Standard** | **EN 10095** | Heat-Resisting Steels and Nickel Alloys | | **UNS** | **N10004** | Unified Numbering System | --- ### **5. Product Applications** Hastelloy W sheet is extensively utilized in applications requiring superior corrosion resistance and fabricability: **Chemical Processing Equipment:** - Chemical reactor linings - Acid storage tank fabrication - Process vessel components - Column and tower sections - Pressure vessel construction **Pollution Control Systems:** - Scrubber system components - FGD system ductwork - Waste treatment equipment - Chemical recovery vessels - Environmental protection equipment **Pharmaceutical Industry:** - Reaction vessel fabrication - Process tank construction - Mixing vessel components - Chemical storage systems **Industrial Applications:** - Pickling tank construction - Acid handling equipment - Process plant structural components - Corrosion-resistant flooring and platforms --- ### **6. Fabrication Characteristics** * **Formability**: Excellent in annealed condition for deep drawing and press forming * **Weldability**: Excellent using GTAW, GMAW, SMAW processes * **Machinability**: Similar to other nickel-based alloys * **Heat Treatment**: Solution anneal at 1150-1200°C (2100-2190°F) * **Surface Preparation**: Pickling and passivation recommended --- ### **7. Available Specifications** * **Thickness Range**: 0.5mm to 6.0mm (0.020" to 0.250") * **Width Range**: Up to 1500mm (60") * **Length**: Up to 3000mm (120") * **Condition**: Annealed and pickled * **Surface Quality**: No. 1 finish, 2B finish, or polished --- ### **8. Quality Assurance** * **Testing**: Visual inspection, dimensional verification * **Certification**: EN 10204 3.1/3.2 material certificates * **Traceability**: Full material traceability maintained * **Compliance**: ASME, PED, and customer-specific requirements --- **Disclaimer:** *Hastelloy® is a registered trademark of Haynes International. This information is for reference purposes only. Always consult relevant material standards and manufacturer's technical data sheets for certified properties. Performance in specific applications should be verified through appropriate testing and corrosion evaluation.*

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 1877 gallon liquid totes Special package is available on request.