Alloy N,Hastelloy N Tube,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 Tube (UNS N10003)** **Nickel-Molybdenum-Chromium Alloy Tube for High-Temperature Service** --- ### **1. Product Overview** **Hastelloy® N Tube** (UNS N10003) is a nickel-molybdenum-chromium alloy tubing product specifically engineered for extreme high-temperature applications requiring exceptional resistance to molten fluoride salts and corrosive environments. Available in seamless and welded configurations, this tube maintains outstanding performance in nuclear reactors, chemical processing equipment, and advanced energy systems where conventional materials fail under severe thermal and corrosive conditions. --- ### **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 | | Carbon (C) | 0.04-0.08 | Optimizes high-temperature strength | | Cobalt (Co) | 0.20 max | Controlled impurity | | 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 | | **Room Temperature Mechanical Properties** | | | Tensile Strength | 690-895 MPa | | Yield Strength (0.2% Offset) | 310-620 MPa | | Elongation | 35-55% | | Hardness (Rockwell B) | 85-100 HRB | | **High-Temperature Mechanical Properties** | | | Tensile Strength at 760°C (1400°F) | 380-480 MPa | | Yield Strength at 760°C (1400°F) | 240-340 MPa | | Creep Rupture Strength (1000h, 815°C) | 55 MPa | | Maximum Service Temperature | 980°C (1800°F) | --- ### **4. Product Applications** #### **4.1 Nuclear Energy Systems** - **Molten Salt Reactor Components**: Heat exchanger tubes, primary circuit tubing - **Reactor Core Tubes**: Fuel and coolant channel tubing - **Nuclear Heat Exchangers**: Shell and tube heat exchanger applications - **Radioactive Fluid Handling**: Containment and transfer tubing systems #### **4.2 Heat Exchanger Applications** - **Shell and Tube Heat Exchangers**: For corrosive high-temperature service - **Compact Heat Exchangers**: Plate and fin heat exchanger components - **Waste Heat Recovery**: High-temperature exhaust gas heat exchangers - **Process Heaters**: Fired heater and boiler tubes #### **4.3 Chemical Processing** - **Reactor Coils**: Heating and cooling coils in chemical reactors - **Transfer Lines**: High-temperature corrosive fluid transfer - **Evaporator Tubes**: For concentration and purification processes - **Catalyst Tubes**: Reactor tubes in catalytic processes #### **4.4 Advanced Energy Systems** - **Concentrated Solar Power**: Receiver tubes and heat transfer components - **Advanced Nuclear Systems**: Next-generation reactor components - **High-Temperature Fuel Cells**: System components and interconnects - **Thermal Energy Storage**: Heat exchanger tubes for storage systems --- ### **5. Key Features & Benefits** - **Exceptional Molten Salt Resistance**: Superior performance in fluoride salt environments up to 815°C (1500°F) - **Outstanding High-Temperature Strength**: Maintains mechanical properties up to 980°C (1800°F) - **Excellent Oxidation Resistance**: Superior performance in oxidizing atmospheres - **Good Fabricability**: Can be bent, expanded, and welded using standard techniques - **Optimized Wall Thickness**: Consistent wall distribution for maximum heat transfer efficiency - **Thermal Stability**: Resists thermal aging and embrittlement - **Nuclear Grade Available**: Suitable for nuclear applications with proper certification - **Long Service Life**: Extended performance in demanding high-temperature environments --- ### **6. International Standards & Specifications** | Standard Type | Specification Number | Description | |---------------|----------------------|-------------| | ASTM | B622 | Standard Specification for Seamless Nickel and Nickel Alloy Pipe and Tube | | ASTM | B626 | Standard for Welded Nickel and Nickel Alloy Tube | | UNS | N10003 | Unified Numbering System Designation | | ASME | SB-622 | Code Case for Pressure Vessel Applications | | DIN | 2.4853 | Material Number and Specification | | EN | 2.4853 | European Standard Designation | | ISO | 6207 | Seamless and Welded Tubes for Pressure Purposes | --- ### **7. Product Specifications** #### **7.1 Tube Types & Sizes** - **Seamless Tube**: OD 3mm to 150mm, Wall thickness 0.5mm to 12mm - **Welded Tube**: OD 6mm to 300mm, Wall thickness 0.8mm to 8mm - **Heat Exchanger Tubes**: To ASTM/ASME specifications for tube sheets - **Instrumentation Tubes**: Small diameter tubes for precision applications #### **7.2 Technical Specifications** - **OD Tolerance**: ±0.1mm to ±0.5% depending on diameter - **Wall Thickness Tolerance**: ±10% for seamless, ±7.5% for welded - **Straightness**: ≤1.0mm per meter for precision applications - **Surface Finish**: Pickled, bright annealed, or special finishes available --- ### **8. Fabrication & Installation Guidelines** #### **8.1 Tube Installation** - **Tube Expansion**: Proper rolling techniques to maintain wall integrity - **Bending**: Cold bending for radii >3×OD; hot bending for complex shapes - **Cutting**: Precision cutting with proper deburring for optimal performance - **Cleaning**: Chemical cleaning to remove manufacturing residues #### **8.2 Welding & Joining** - **Welding Methods**: GTAW (TIG) preferred for tube-to-tubesheet welding - **Filler Metals**: Use matching composition filler metals - **Tube-to-Tubesheet Welding**: Strength welding or light expansion with seal welding - **Purge Gas**: Maintain proper internal purge during welding operations #### **8.3 Quality Control** - **Leak Testing**: Pneumatic or hydrostatic testing as required - **Dimensional Verification**: OD, wall thickness, and straightness checks - **Surface Inspection**: Visual and dye penetrant examination - **Documentation**: Certified Mill Test Reports with full traceability --- ### **9. Quality Assurance & Certification** - **Material Certification**: EN 10204 3.1/3.2 with full traceability - **Non-Destructive Testing**: Eddy current, ultrasonic, hydrostatic testing - **Chemical Analysis**: Verified by spectrometer and wet chemical methods - **Mechanical Testing**: Tensile, hardness, and flattening tests - **Nuclear Certification**: NQA-1 compliance available for nuclear applications - **Certifications**: ISO 9001, ASME, NORSOK compliance - **Documentation**: Complete certification package including heat treatment records --- **Disclaimer**: The technical information provided represents typical values and is for reference purposes. Actual properties may vary based on manufacturing process, tube size, and heat treatment condition. Users must verify suitability for specific applications through appropriate testing and consult with technical experts for pressure-containing and nuclear applications. 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 2876 gallon liquid totes Special package is available on request.