Alloy N,Hastelloy N Wire,UNS N10003,E FORU

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

### **Technical Datasheet: Alloy N (UNS N10003) Wire** **Overview** Alloy N (commercially known as Hastelloy® N and standardized as UNS N10003) is a nickel-chromium-molybdenum alloy renowned for its exceptional resistance to molten fluoride salts. Developed specifically for the Molten Salt Reactor Experiment (MSRE), this alloy maintains high strength and outstanding oxidation resistance at elevated temperatures. **Alloy N Wire** is a critical product form used for welding, high-temperature springs, fasteners, and other specialized components in the most demanding environments. **Key Characteristics of Alloy N Wire** * **Excellent Weldability:** The primary use of wire is as a filler metal for welding Alloy N components. It produces sound, corrosion-resistant welds. * **High-Temperature Strength:** Retains significant tensile and creep-rupture strength at temperatures up to 1200°C (2200°F). * **Superior Corrosion Resistance:** Exceptional resistance to corrosion by molten fluorides, oxidizing atmospheres, and many aggressive industrial chemicals. * **Good Fabricability:** Can be readily drawn to fine diameters and formed into springs and other wire forms. --- ### **Chemical Composition (Weight % Typical)** The composition is tightly controlled to ensure consistent performance, especially in welding applications. | Element | Percentage (%) | Primary Function | | :--- | :--- | :--- | | **Nickel (Ni)** | Balance (~71%) | Base element; provides the austenitic matrix and general corrosion resistance. | | **Molybdenum (Mo)** | 16.0 - 18.0% | Enhances strength and resistance to reducing acids and pitting. | | **Chromium (Cr)** | 6.0 - 8.0% | Provides resistance to oxidation and sulfidizing environments. | | **Iron (Fe)** | 5.0% max | Residual element. | | **Silicon (Si)** | 1.0% max | Aids in deoxidation; content is controlled for weld wire. | | **Manganese (Mn)** | 0.8% max | Improves hot workability. | | **Titanium (Ti)** | 1.0% max | Added for stabilization, controlling carbide formation, and improving weldability. | | **Carbon (C)** | 0.06% - 0.12% | Enhances high-temperature strength via carbide formation. | | **Aluminum (Al)** | 0.5% max | Residual element. | | **Copper (Cu)** | 0.35% max | Residual element. | | **Boron (B)** | 0.01% max | Trace addition to improve creep ductility. | *Note: "Hastelloy" is a registered trademark of Haynes International Inc.* --- ### **Physical & Mechanical Properties (Typical)** **Physical Properties (Wire, Annealed Condition):** | Property | Value | | :--- | :--- | | **Density** | 8.86 g/cm³ (0.320 lb/in³) | | **Melting Point** | 1334 - 1360°C (2435 - 2480°F) | | **Thermal Conductivity** | 12.2 W/m·K (at 20°C) | | **Coefficient of Thermal Expansion** | 12.4 μm/m·°C (20-100°C) | | **Electrical Resistivity** | 1.25 μΩ·m | **Mechanical Properties (Wire, Annealed Condition - Typical):** * **Tensile Strength:** 760 - 895 MPa (110 - 130 ksi) * **Yield Strength (0.2% Offset):** 345 - 415 MPa (50 - 60 ksi) * **Elongation:** 35% min (in 2 inches / 50 mm) *Note: Mechanical properties can be adjusted through cold working (for higher strength) or annealing (for maximum ductility).* --- ### **Product Applications: Alloy N Wire** The wire form of Alloy N is utilized in several critical areas: **1. Welding Consumable (Primary Application)** * **Gas Tungsten Arc Welding (GTAW/TIG):** Used as a filler wire for joining Alloy N plates, sheets, and tubes. * **Gas Metal Arc Welding (GMAW/MIG):** Used as an electrode wire for automated welding of Alloy N structures. * **Submerged Arc Welding (SAW):** Used as a continuous electrode wire. * **Application Sectors:** Nuclear reactor components, chemical process vessels, high-temperature furnace parts. **2. High-Temperature Springs & Fasteners** * The alloy's ability to retain strength and resist creep at high temperatures makes it ideal for wire-formed **springs**, **clips**, and **fasteners** used in aerospace engines, thermal processing equipment, and testing apparatus. **3. Heating Elements & Resistance Wire** * Used in specialized high-temperature furnaces, particularly where resistance to carburization or specific corrosive atmospheres is required. **4. Wire Mesh & Filter Cloth** * Woven into mesh for filtering hot, corrosive gases or liquids in the chemical processing industry. **5. Laboratory & Research Applications** * Used for fixtures, hooks, and sample supports in high-temperature materials testing and research, especially in molten salt environments. --- ### **International Standards** Alloy N Wire is covered by several international standards that specify chemical, mechanical, and dimensional requirements. | Standard Organization | Standard Number | Title / Description | | :--- | :--- | :--- | | **ASTM International** | **ASTM B335** | Standard Specification for *Nickel-Molybdenum Alloy Rod and Bar* (often referenced for wire). | | **ASTM International** | **ASTM B518** | Standard Specification for *Welded Nickel-Chromium-Iron-Alloy (UNS N06600) Heat-Exchanger Tubes* (Wire may be used as a consumable). | | **AWS (American Welding Society)** | **AWS A5.14 / ISO 18274** | Specification for *Nickel and Nickel-Alloy Bare Welding Electrodes and Rods*. UNS N10003 is typically classified under an ERNiMo-XX designation. | | **ASME (American Society of Mechanical Engineers)** | **ASME SFA-5.14** | Equivalent to AWS A5.14, approved for use in ASME code construction (e.g., nuclear components). | | **SAE International** | **AMS 5800** | Aerospace Material Specification for *Wire, Welding, 72Ni - 16Mo - 7Cr - (UNS N10003)*. This is a key specification for aerospace-grade wire. | | **UNS (Unified Numbering System)** | **UNS N10003** | The universal designation for this alloy composition. | | **ISO (International Organization for Standardization)** | **ISO 9724** | Nickel and nickel alloys — Wire (General specification). | **Disclaimer:** This information is for reference purposes only. The properties and performance of Alloy N Wire can be influenced by its final heat treatment, surface finish, and specific manufacturing process. For critical applications, always consult the relevant material standard and the manufacturer's certified test reports. "Hastelloy" is a registered trademark of Haynes International.

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 2884 gallon liquid totes Special package is available on request.