Alloy N,Hastelloy N ,UNS N10003,E FORU

British Specs:，American Specs: AMS 5771 Bar and Forging AMS 5607 Sheet, Strip and Plate，German Specs:

**Product Data Sheet: Alloy N / Hastelloy® N / UNS N10003** **Nickel-Molybdenum-Chromium Alloy for High-Temperature Corrosive Service** --- ### **1. Product Overview** **Hastelloy® N** (UNS N10003) is a nickel-molybdenum-chromium alloy specifically developed for exceptional resistance to molten fluoride salts and high-temperature corrosive environments. Originally created for nuclear reactor applications, this alloy demonstrates outstanding performance in oxidizing and reducing atmospheres at elevated temperatures, making it ideal for advanced energy systems, chemical processing, and aerospace applications. --- ### **2. Chemical Composition (Typical % by Weight)** | Element | Content (%) | Function | |---------|-------------|----------| | Nickel (Ni) | Balance | Base element providing high-temperature strength and stability | | Molybdenum (Mo) | 15.0-18.0 | Enhances strength and corrosion resistance in reducing environments | | Chromium (Cr) | 6.0-8.0 | Provides oxidation resistance at high temperatures | | Iron (Fe) | 5.0 max | Controlled for optimal thermal stability | | Silicon (Si) | 1.0 max | Enhances oxidation resistance | | Manganese (Mn) | 0.80 max | Deoxidizer and process control | | Aluminum (Al) | 0.50 max | Improves oxidation resistance | | Cobalt (Co) | 0.20 max | Controlled impurity | | Carbon (C) | 0.04-0.08 | Optimizes high-temperature strength | | Boron (B) | 0.010 max | Controlled for nuclear applications | | Sulfur (S) | 0.015 max | Minimized to prevent hot cracking | --- ### **3. Physical & Mechanical Properties** | Property | Value (Typical) | |----------|-----------------| | Density | 8.86 g/cm³ | | Melting Point | 1330-1360°C (2426-2480°F) | | Thermal Conductivity | 14.2 W/m·K at 20°C | | Coefficient of Thermal Expansion | 12.3 μm/m·K (20-100°C) | | Specific Heat Capacity | 448 J/kg·K at 20°C | | Modulus of Elasticity | 217 GPa at 20°C | | Tensile Strength | 690-895 MPa | | Yield Strength (0.2% Offset) | 310-620 MPa | | Elongation | 35-55% | | Hardness (Rockwell B) | 85-100 HRB | | Maximum Service Temperature | 980°C (1800°F) | --- ### **4. Product Applications** #### **4.1 Nuclear Energy Systems** - **Molten Salt Reactors**: Core components and heat exchangers - **Nuclear Fuel Processing**: Equipment for fuel reprocessing - **Reactor Vessel Internals**: Structural components in advanced reactors - **Radioactive Waste Handling**: Containment and processing equipment #### **4.2 Chemical Processing** - **High-Temperature Reactors**: Vessels and piping for corrosive processes - **Catalyst Support Systems**: Components in catalytic reforming - **Acid Production**: Equipment for sulfuric and nitric acid service - **Petrochemical Processing**: High-temperature reactor components #### **4.3 Aerospace & Defense** - **Rocket Components**: Nozzles and thrust chambers - **Gas Turbine Parts**: High-temperature sections - **Exhaust Systems**: Components for high-temperature exhaust - **Specialized Instrumentation**: High-temperature sensors and controls #### **4.4 Industrial Applications** - **Heat Treating Equipment**: Furnace components and fixtures - **Glass Manufacturing**: Processing equipment and molds - **Power Generation**: Advanced power system components - **Research Equipment**: Laboratory and testing apparatus --- ### **5. Key Features & Benefits** - **Exceptional Molten Salt Resistance**: Superior performance in fluoride salt environments - **High-Temperature Strength**: Maintains mechanical properties at elevated temperatures - **Excellent Oxidation Resistance**: Performs well in oxidizing atmospheres up to 980°C - **Good Thermal Stability**: Resists thermal aging and embrittlement - **Fabrication Versatility**: Can be welded, formed, and machined using standard methods - **Radiation Resistance**: Suitable for nuclear applications - **Long Service Life**: Extended component lifetime in demanding environments - **Proven Reliability**: Decades of successful performance in critical applications --- ### **6. International Standards & Specifications** | Standard Type | Specification Number | Description | |---------------|----------------------|-------------| | ASTM | B366 | Standard Specification for Factory-Made Wrought Nickel Alloy Fittings | | ASTM | B564 | Standard Specification for Nickel Alloy Forgings | | UNS | N10003 | Unified Numbering System Designation | | ASME | SB-366 | Code Case for Pressure Component Applications | | DIN | 2.4853 | Material Number and Specification | | EN | 2.4853 | European Standard Designation | | ISO | 6208 | Nickel Alloy Plate, Sheet, and Strip | --- ### **7. Corrosion Resistance Performance** #### **7.1 High-Temperature Environments** - **Molten Fluoride Salts**: Exceptional resistance in FLiBe and other fluoride salts - **Oxidizing Atmospheres**: Good performance in air and oxygen up to 980°C - **Reducing Atmospheres**: Resistant to hydrogen and other reducing gases - **Thermal Cycling**: Maintains integrity under repeated thermal cycles #### **7.2 Chemical Resistance** - **Sulfuric Acid**: Good resistance at moderate concentrations and temperatures - **Nitric Acid**: Excellent performance in concentrated solutions - **Hydrochloric Acid**: Limited resistance, not recommended for service - **Alkaline Solutions**: Good resistance to caustic environments --- ### **8. Fabrication & Processing Guidelines** #### **8.1 Welding & Joining** - **Welding Methods**: GTAW (TIG) preferred, GMAW (MIG) acceptable - **Filler Metals**: Use matching composition or recommended alternatives - **Preheating**: Generally not required for most applications - **Post-Weld Heat Treatment**: Stress relief at 870-900°C recommended for critical applications #### **8.2 Heat Treatment** - **Solution Annealing**: 1150-1200°C (2100-2190°F) followed by rapid cooling - **Stress Relieving**: 870-900°C (1600-1650°F) for dimensional stability - **Aging Treatments**: Not typically required #### **8.3 Machining & Forming** - **Machining**: Use positive rake carbide tools with adequate cooling - **Cold Working**: Good formability in annealed condition - **Hot Working**: Forge at 1150-1200°C (2100-2190°F) - **Surface Treatment**: Passivation recommended for optimal corrosion resistance --- ### **9. Quality Assurance & Certification** - **Material Certification**: EN 10204 3.1/3.2 with full traceability - **Testing Protocols**: Mechanical testing, chemical analysis, corrosion testing - **Non-Destructive Testing**: UT, RT, PT, MT as required by specification - **Nuclear Certification**: Available for nuclear grade applications - **Certifications**: ISO 9001, ASME, NQA-1, NORSOK compliance - **Documentation**: Complete material traceability and test records --- **Disclaimer**: The technical information provided represents typical values and is for reference purposes. Actual properties may vary based on manufacturing process, product form, and heat treatment condition. Users must verify suitability for specific applications through appropriate testing and consult with technical experts for critical applications, particularly in nuclear service. Hastelloy® is a registered trademark of Haynes International. Compliance with all applicable safety standards, codes, and regulations is mandatory.

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 2872 gallon liquid totes Special package is available on request.