Alloy W,Hastelloy W Forgings,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 Forgings (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 **forged** product form provides superior mechanical properties, enhanced grain structure, and improved directional strength compared to cast products, making it ideal for critical components in aggressive chemical services up to **980°C (1800°F)**. --- ### **1. Chemical Composition** The chemical composition of Hastelloy W (UNS N10004) forgings 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 forgings: | 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 solution annealed Hastelloy W forgings: | Property | Typical Value | |----------|---------------| | **Tensile Strength** | 690 - 860 MPa (100 - 125 ksi) | | **Yield Strength (0.2% Offset)** | 310 - 485 MPa (45 - 70 ksi) | | **Elongation** | 45 - 60% | | **Reduction of Area** | 50 - 70% | | **Hardness (Rockwell B)** | 85 - 100 HRB | * **Forging Advantages**: - Superior grain flow characteristics - Enhanced fatigue resistance - Improved impact strength - Better overall mechanical properties compared to cast products - Elimination of porosity and internal defects --- ### **4. International Standards** Hastelloy W (UNS N10004) forgings comply with the following international standards: | Standard Body | Standard Designation | Specification | |---------------|----------------------|--------------| | **ASTM International** | **ASTM B564** | Nickel Alloy Forgings | | **ASME** | **ASME SB-564** | Pressure Vessel Components | | **Aerospace Material Specification** | **AMS 5759** | Bars, Forgings, and Rings | | **ASTM International** | **ASTM B472** | Forged or Rolled Alloy Pipe Flanges | | **European Standard** | **EN 10204** | Metallic Products - Types of Inspection Documents | --- ### **5. Product Applications & Forging Types** **Common Forging Types:** * **Open-Die Forgings**: Large components, custom shapes, and pre-forms * **Closed-Die Forgings**: Complex net-shape or near-net-shape components * **Rolled Rings**: Circular components for chemical processing equipment * **Press Forgings**: High-volume production components **Industry Applications:** * **Chemical & Petrochemical:** * Pump casings and impellers * Valve bodies and components * Reactor agitators and internals * Mixer shafts and components * **Pharmaceutical Industry:** * Reaction vessel components * Mixing equipment parts * Process vessel internals * High-pressure components * **Pollution Control:** * Scrubber system components * FGD system parts * Waste treatment equipment * Chemical recovery system components * **Industrial Processing:** * Acid handling equipment * Chemical processing machinery * High-temperature components * Corrosion-resistant structural parts --- ### **6. Manufacturing Process** * **Forging Temperature**: 1000-1200°C (1830-2190°F) * **Solution Annealing**: 1150-1200°C (2100-2190°F) followed by rapid cooling * **Quality Control**: Ultrasonic testing, dye penetrant inspection * **Heat Treatment**: Full solution annealing for optimal properties * **Surface Finish**: Machined, ground, or as-forged surfaces available --- ### **7. Quality Assurance** * **Material Traceability**: Heat number tracking throughout manufacturing * **Non-Destructive Testing**: UT, PT, MT as required by specification * **Certification**: EN 10204 3.1/3.2 material certificates * **Compliance**: ASME, ASTM, and customer-specific requirements --- **Disclaimer:** *Hastelloy® is a registered trademark of Haynes International. This information is for reference purposes only. Mechanical properties may vary with forging size, shape, and heat treatment parameters. For critical applications, always consult the appropriate material specification and obtain certified test reports from the manufacturer. Proper forging techniques and heat treatment are essential to achieve the desired mechanical properties and microstructural characteristics.*

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 1880 gallon liquid totes Special package is available on request.