Alloy N,Hastelloy N Fittings,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 Fittings (UNS N10003)** **Nickel-Molybdenum-Chromium Alloy Fittings for High-Temperature Service** --- ### **1. Product Overview** **Hastelloy® N Fittings** (UNS N10003) are precision-engineered nickel-molybdenum-chromium alloy components designed for high-temperature piping systems handling molten fluoride salts and other aggressive media. These fittings maintain all the superior high-temperature and corrosion-resistant properties of Hastelloy N while providing reliable, leak-proof connections in nuclear reactors, chemical processing, and advanced energy systems where exceptional performance at elevated temperatures is critical. --- ### **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) | | 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 | | Maximum Service Temperature | 980°C (1800°F) | --- ### **4. Product Applications** #### **4.1 Nuclear Energy Systems** - **Molten Salt Reactor Piping**: Fittings for primary and secondary coolant circuits - **Reactor Cooling Systems**: Pipe connections in advanced reactor designs - **Fuel Salt Systems**: Fittings for fuel salt circulation and transfer - **Nuclear Waste Processing**: Connections in radioactive waste handling systems #### **4.2 Chemical Processing Industry** - **High-Temperature Process Systems**: Fittings for corrosive chemical processes - **Acid Production Equipment**: Connections in sulfuric and nitric acid service - **Catalyst Circulation Systems**: Fittings for high-temperature catalyst transfer - **Reactor Feed Lines**: Corrosive chemical feed system connections #### **4.3 Advanced Energy Applications** - **Concentrated Solar Power**: Heat transfer fluid system fittings - **Advanced Power Cycles**: Connections for high-temperature working fluids - **Thermal Energy Storage**: Fittings in high-temperature storage systems - **Hydrogen Production**: High-temperature process system connections #### **4.4 Industrial Applications** - **High-Temperature Furnaces**: Process gas and cooling system fittings - **Heat Treatment Equipment**: Protective atmosphere system components - **Glass Manufacturing**: High-temperature process system connections - **Research Facilities**: Specialized high-temperature system fittings --- ### **5. Key Features & Benefits** - **Exceptional Molten Salt Resistance**: Superior performance in fluoride salt environments up to 815°C (1500°F) - **High-Temperature Capability**: Maintains mechanical integrity up to 980°C (1800°F) - **Excellent Oxidation Resistance**: Outstanding performance in oxidizing atmospheres - **Precision Manufacturing**: Consistent dimensions and smooth internal surfaces for optimal flow - **Easy Installation**: Designed for straightforward assembly and alignment - **Leak-Free Performance**: Precision machining ensures reliable sealing - **Excellent Weldability**: Can be welded using matching filler metals with proper procedures - **Nuclear Grade Available**: Suitable for nuclear applications with proper certification --- ### **6. International Standards & Specifications** | Standard Type | Specification Number | Description | |---------------|----------------------|-------------| | ASTM | B366 | Standard Specification for Factory-Made Wrought Nickel Alloy Fittings | | 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 | | MSS | SP-43 | Wrought Stainless Steel Fittings | | ISO | 9001 | Quality Management System Certification | --- ### **7. Product Specifications** #### **7.1 Fitting Types & Configurations** - **Elbows**: 45°, 90°, and 180° angles; short and long radius patterns - **Tees**: Equal and reducing tees; straight and barred patterns - **Reducers**: Concentric and eccentric reducers - **Caps**: Pipe caps and end closures - **Couplings**: Full couplings and half-couplings - **Special Fittings**: Crosses, laterals, and custom configurations #### **7.2 Size Range & Pressure Ratings** - **Size Range**: 1/8" to 12" NPS (DN6 to DN300) - **Wall Thickness**: Schedule 5S to Schedule 80 - **Pressure Ratings**: Class 150, 300, and 600 available - **End Connections**: Butt-weld, socket weld, and threaded ends --- ### **8. Fabrication & Installation Guidelines** #### **8.1 Welding & Installation** - **Welding Preparation**: Proper fit-up and alignment essential for butt-weld fittings - **Welding Methods**: GTAW (TIG) preferred for critical applications - **Filler Metals**: Use matching composition filler metals - **Preheating**: Generally not required - **Interpass Temperature**: Maintain below 150°C (300°F) - **Post-Weld Heat Treatment**: Stress relief at 870-900°C recommended for critical applications #### **8.2 Quality Control** - **Visual Inspection**: Check for surface defects and proper bevel preparation - **Dimensional Verification**: Verify all critical dimensions before installation - **Material Verification**: Positive Material Identification (PMI) testing - **Documentation Review**: Verify all certifications and test reports --- ### **9. Quality Assurance & Certification** - **Material Certification**: EN 10204 3.1/3.2 with full traceability - **Testing Protocols**: Hydrostatic testing, PMI, and visual inspection - **Non-Destructive Testing**: PT, MT, RT as required by specification - **Nuclear Certification**: NQA-1 compliance available for nuclear applications - **Certifications**: ISO 9001, ASME, NORSOK compliance - **Documentation**: Certified Mill Test Reports with complete material properties - **Traceability**: Complete material history from melt to finished fitting --- **Disclaimer**: The technical information provided represents typical values and is for reference purposes. Actual properties may vary based on manufacturing process, fitting size, and wall thickness. 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 2880 gallon liquid totes Special package is available on request.