Alloy W,Hastelloy W Plate,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 Plate (UNS N10004)** **Overview** **Alloy W**, commercially known as **Hastelloy® W**, is a nickel-molybdenum-chromium superalloy specifically designed 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 **plate** product form is engineered for structural applications, tank construction, and pressure vessel fabrication where superior corrosion resistance and mechanical integrity are required at temperatures up to **980°C (1800°F)**. --- ### **1. Chemical Composition** The chemical composition of Hastelloy W (UNS N10004) plate 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)**: Provides the austenitic matrix for superior corrosion resistance and thermal stability. * **Mo (Molybdenum)**: Enhances resistance to reducing acids and prevents pitting 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 plate 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 plate: | 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) plate conforms to these 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 | | **Aerospace Material Specification** | **AMS 5759** | Bars, Forgings, and Rings | | **European Standard** | **EN 10095** | Heat-Resisting Steels and Nickel Alloys | --- ### **5. Product Applications** Hastelloy W plate is specified for critical corrosive service applications: **Chemical Processing Equipment:** - Chemical reactor vessels - Acid storage tanks and containers - Process vessel linings - Column and tower sections - Pressure vessel components **Pollution Control Systems:** - Scrubber system housings - FGD system components - Waste treatment tanks - 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**: Good in annealed condition for press forming and rolling * **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**: 5mm to 100mm (0.187" to 4") * **Width Range**: Up to 2000mm (78") * **Length**: Up to 6000mm (236") * **Condition**: Hot rolled, annealed, and pickled * **Surface Quality**: No. 1 finish, pickled, or mill finish --- ### **8. Quality Assurance** * **Testing**: Ultrasonic testing per ASTM A578 * **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. 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 1876 gallon liquid totes Special package is available on request.