Alloy 201，Nickel 201 Wire，UNS N02201，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA11，American Specs:ASTM B162 ASTM B163 ASTM B725 ASTM B730 AMS 5553 Sheet and Strip，German Specs:WS 2.4061 WS 2.4068

### **Technical Datasheet: Nickel 201 Wire (UNS N02201)** #### **1. Product Overview** **Nickel 201 Wire** is a low-carbon version of commercially pure nickel wire, specifically designed for high-temperature applications where resistance to grain-boundary carbide embrittlement is crucial. With a maximum carbon content of 0.02%, this wire maintains exceptional structural integrity in continuous service temperatures exceeding **315°C (600°F)**, making it superior to Nickel 200 wire for elevated temperature applications. Available in diameters ranging from fine gauges for electrical applications to heavier diameters for mechanical components, Nickel 201 Wire combines excellent corrosion resistance with high-temperature stability. The material exhibits excellent ductility and can be supplied in various tempers from annealed (soft) to hard drawn for specific high-temperature application requirements. #### **2. Chemical Composition (% Weight)** Composition conforms to ASTM B160 for low-carbon nickel wire products. | Element | Content (%) (ASTM B160) | Content (%) (Typical) | | :--- | :--- | :--- | | **Nickel (Ni)** | 99.0 min | ≥ 99.6 | | **Carbon (C)** | **0.02 max** | **0.01** | | **Manganese (Mn)** | 0.35 max | 0.20 | | **Iron (Fe)** | 0.40 max | 0.20 | | **Copper (Cu)** | 0.25 max | 0.15 | | **Silicon (Si)** | 0.35 max | 0.15 | | **Sulfur (S)** | 0.01 max | 0.005 | #### **3. Physical Properties** | Property | Metric Unit | Imperial Unit | | :--- | :--- | :--- | | **Density** | 8.89 g/cm³ | 0.321 lb/in³ | | **Melting Point** | 1435-1445 °C | 2615-2633 °F | | **Thermal Conductivity** | 70 W/m·K | 485 BTU·in/hr·ft²·°F | | **Electrical Resistivity** | 0.095 μΩ·m | 36.5 μΩ·in | | **Modulus of Elasticity** | 186 GPa | 27 x 10⁶ psi | | **Coefficient of Thermal Expansion** | 13.3 μm/m·°C | 7.4 x 10⁻⁶ in/in·°F | #### **4. Mechanical Properties** Properties vary with temper condition and diameter: **Annealed Temper:** * **Tensile Strength:** 380-480 MPa (55-70 ksi) * **Yield Strength (0.2% Offset):** 140-275 MPa (20-40 ksi) * **Elongation:** 35-50% **Hard Drawn Temper:** * **Tensile Strength:** 620-830 MPa (90-120 ksi) * **Yield Strength (0.2% Offset):** 550-760 MPa (80-110 ksi) * **Elongation:** 10-25% **High-Temperature Properties (at 500°C/932°F):** * **Tensile Strength:** ~ 250 MPa (36 ksi) * **Yield Strength:** ~ 100 MPa (15 ksi) * **Creep Resistance:** Excellent long-term performance #### **5. Standard Specifications** | Standard Organization | Standard Number | Title / Scope | | :--- | :--- | :--- | | **ASTM International** | **ASTM B160** | Standard Specification for Nickel Rod and Bar | | **ASTM International** | **ASTM B166** | Nickel-Chromium-Iron Alloy Rod, Bar, and Wire | | **ASME** | **SB-160** | Nickel Rod and Bar | | **SAE Aerospace** | **AMS 5557** | Wire, Nickel Alloy | | **AWS** | **A5.14** | Nickel Alloy Electrodes | | **UNS** | **N02201** | Unified Numbering System | #### **6. Available Forms & Sizes** **Diameter Range:** * **Fine Wire:** 0.025 mm to 0.5 mm (0.001" to 0.020") * **Standard Wire:** 0.5 mm to 6.0 mm (0.020" to 0.250") * **Heavy Wire:** 6.0 mm to 12.0 mm (0.250" to 0.500") **Temper Conditions:** * Annealed (Soft) * Quarter Hard * Half Hard * Three-Quarter Hard * Hard * Spring Temper **Surface Finish:** * Bright finish * Matte finish * Oxidized finish #### **7. Key Characteristics** * **Superior High-Temperature Performance:** Excellent resistance to embrittlement at temperatures above 315°C (600°F) * **Excellent Corrosion Resistance:** Maintains resistance to caustic alkalis, reducing acids, and neutral salts at elevated temperatures * **High Electrical Conductivity:** Suitable for high-temperature electrical and electronic applications * **Good Weldability:** Can be welded using GTAW, GMAW, and resistance welding methods * **Excellent Formability:** Can be bent, coiled, and formed without cracking * **Consistent Quality:** Uniform diameter and mechanical properties throughout length #### **8. Temperature Capability** * **Maximum Continuous Service:** **600°C (1112°F)** * **Intermittent Service:** Up to 815°C (1500°F) for short durations * **Minimum Service Temperature:** -196°C (-321°F) #### **9. Product Applications** **High-Temperature Electrical & Electronic:** * Lead wires and connections for elevated temperature service * Resistance wire for high-temperature applications * Heating elements for moderate temperature applications * High-temperature electronic component leads **Industrial & Manufacturing:** * High-temperature furnace components * Fasteners and pins for elevated temperature service * Springs for high-temperature corrosive service * Welding wire for Nickel 201 fabrication **Aerospace & Defense:** * Rocket engine component wiring * High-temperature sensor leads * Aircraft engine compartment wiring * High-temperature instrumentation wires **Specialized Applications:** * High-temperature laboratory equipment components * Nuclear instrumentation wiring * Medical device wire for sterilization applications * High-temperature thermocouple compensation leads --- **Disclaimer:** The information provided is for reference purposes. Actual properties may vary based on manufacturing process, diameter, temper, and heat treatment. Users should verify suitability for specific high-temperature applications through appropriate testing and consult with materials engineers for critical applications involving elevated temperature service.

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 1649 gallon liquid totes Special package is available on request.