Alloy 201，Nickel 201 Rod，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 Rod (UNS N02201)** #### **1. Product Overview** **Nickel 201 Rod** (commercially known as **Alloy 201 Rod**) is a wrought product form manufactured from low-carbon commercially pure nickel. This grade is specifically engineered with a maximum carbon content of 0.02% to prevent embrittlement in high-temperature applications, making it the superior choice over Nickel 200 for service temperatures exceeding **315°C (600°F)**. Nickel 201 Rod retains all the beneficial properties of pure nickel – including excellent corrosion resistance, high thermal and electrical conductivity, and good mechanical properties – while providing enhanced performance and structural stability in elevated temperature environments. The rod form is particularly suited for machining into high-temperature components and fasteners. #### **2. Chemical Composition (% Weight)** The controlled low carbon content distinguishes Nickel 201 from Nickel 200. | 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** (at 25°C) | 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 | | **Thermal Expansion Coefficient** (20-100°C) | 13.3 µm/m·°C | 7.4 x 10⁻⁶ in/in·°F | | **Curie Temperature** | ~ 360 °C | ~ 680 °F | #### **4. Mechanical Properties (Typical for Rod)** **Annealed Condition:** * **Tensile Strength:** 380 - 480 MPa (55 - 70 ksi) * **Yield Strength (0.2% Offset):** 105 - 195 MPa (15 - 28 ksi) * **Elongation (in 2 inches / 50mm):** 45 - 55% **Elevated Temperature Performance (at 500°C/932°F):** * **Tensile Strength:** ~ 250 MPa (36 ksi) * **Yield Strength:** ~ 100 MPa (15 ksi) * **Creep Strength:** Excellent resistance to creep deformation #### **5. International Standards for Rod & Bar** Nickel 201 Rod conforms to the following international standards: | Standard Organization | Standard Number | Title | | :--- | :--- | :--- | | **ASTM International** | **ASTM B160** | Standard Specification for Nickel Rod and Bar | | **ASME** | **SB-160** | Nickel Rod and Bar (for pressure vessel components) | | **SAE** | **AMS 5556** | Bar, Nickel Alloy, Corrosion and Heat-Resistant | | **UNS** | **N02201** | Unified Numbering System | | **EN (Europe)** | **EN 10095** | Ni 99.2 (Low Carbon) | #### **6. Key Characteristics & Advantages of Nickel 201 Rod** * **Superior High-Temperature Stability:** Resists grain-boundary carbide precipitation and embrittlement at temperatures above 315°C (600°F) * **Excellent Corrosion Resistance:** Outstanding performance in caustic alkalis, reducing acids, and high-temperature chemical environments * **Good Machinability:** Can be readily machined to precise tolerances (approximately 30% relative to free-cutting brass) * **High Thermal Conductivity:** Efficient heat transfer capability maintained at elevated temperatures * **Excellent Weldability:** Can be welded using common techniques including GTAW (TIG) and GMAW (MIG) * **Consistent Mechanical Properties:** Uniform properties throughout the rod cross-section #### **7. Temperature Capability** * **Recommended Maximum Continuous Service:** **600°C (1112°F)** * **Intermittent Service:** Up to 815°C (1500°F) * **Cryogenic Service:** Maintains properties down to -196°C (-321°F) #### **8. Product Applications** Nickel 201 Rod is typically machined into components for high-temperature corrosive environments: * **High-Temperature Chemical Processing:** * Valve stems and shafts for high-temperature service * Agitator shafts in high-temperature reactors * Fasteners and studs for elevated temperature equipment * Support rods for catalyst structures * **Heat Treatment Industry:** * Furnace components and fixtures * Heat treating baskets and trays * Radiant tube supports * Thermocouple protection tubes * **Aerospace & Defense:** * Rocket engine components * High-temperature fasteners * Turbine engine parts * Exhaust system components * **Electronic Manufacturing:** * Lead frames for high-temperature applications * Electronic tube components * High-temperature electrical contacts * **Other High-Temperature Applications:** * Glass manufacturing equipment * Nuclear reactor components * High-temperature sensor components * Catalytic converter parts --- **Disclaimer:** The information provided is for technical reference. Actual properties may vary based on manufacturing process, diameter, and heat treatment. For critical high-temperature applications, consult the complete material specifications and qualified engineering resources. Long-term exposure tests are recommended for service above 500°C (932°F).

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 1638 gallon liquid totes Special package is available on request.