Alloy 200，Nickel 200 Rod，UNS N02200，EFORU

British Specs:BS 3072 BS 3073 BS 3074 BS 3075 BS 3076 NA12，American Specs:ASTM B162 ASTM B163 ASTM B725 ASTM B730，German Specs:WS 2.4060 WS 2.4066

### **Technical Datasheet: Nickel 200 Rod (UNS N02200)** #### **1. Product Overview** **Nickel 200 Rod** (also known as **Alloy 200 Rod**) is a wrought product form manufactured from commercially pure (99.6% min) nickel. This rod offers an exceptional combination of high thermal and electrical conductivity, excellent mechanical properties, and superior corrosion resistance in a wide range of environments, particularly caustic alkalis and reducing atmospheres. As a solid-solution strengthened alloy, Nickel 200 rod is known for its good machinability and weldability, making it a preferred choice for manufacturing critical components like shafts, fasteners, valves, and electrodes. It retains its strength and ductility from cryogenic temperatures up to approximately 315°C (600°F). **Important Note:** For high-temperature service above 315°C (600°F), **Nickel 201 Rod (UNS N02201)** is recommended. The lower carbon content of Nickel 201 prevents embrittlement due to grain-boundary carbide formation. #### **2. Chemical Composition (% Weight)** The composition conforms to standard specifications for rod and bar products like ASTM B160. | Element | Content (%) (ASTM B160) | Content (%) (Typical) | | :--- | :--- | :--- | | **Nickel (Ni)** | 99.0 min | ≥ 99.6 | | **Carbon (C)** | 0.15 max | 0.08 | | **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)** Properties can vary based on the rod diameter and temper (hot-finished, cold-drawn, or annealed). **Annealed Condition:** * **Tensile Strength:** 460 - 620 MPa (67 - 90 ksi) * **Yield Strength (0.2% Offset):** 150 - 310 MPa (22 - 45 ksi) * **Elongation (in 2 inches / 50mm):** 40 - 50% **Cold-Drawn Condition (Higher Strength):** * **Tensile Strength:** 620 - 760 MPa (90 - 110 ksi) * **Yield Strength (0.2% Offset):** 480 - 620 MPa (70 - 90 ksi) * **Elongation:** 15 - 30% #### **5. International Standards for Rod & Bar** Nickel 200 Rod is supplied according 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** | **N02200** | Unified Numbering System | | **EN (Europe)** | **EN 10095** | Ni 99.2 (Material Code 2.4066) | #### **6. Key Characteristics & Advantages of Nickel 200 Rod** * **Excellent Corrosion Resistance:** Outstanding performance in caustic alkalis, neutral salts, and reducing chemicals. Resists chloride-induced stress corrosion cracking. * **High Machinability:** Compared to many nickel alloys, Nickel 200 rod has good machinability (approximately 30% relative to free-cutting brass), allowing for the production of precise components. * **Good Weldability:** Can be readily welded using common techniques such as GTAW (TIG), GMAW (MIG), and SMAW (Stick). * **Favorable Magnetic Properties:** Ferromagnetic at room temperature but becomes non-magnetic above its Curie temperature of ~360°C (680°F). * **Cryogenic to Moderate Temperature Performance:** Maintains excellent toughness and ductility at very low temperatures and useful strength up to 315°C (600°F). #### **7. Product Applications** Nickel 200 Rod is typically machined into components for demanding applications across various industries: * **Chemical Processing:** * Valve stems and shafts * Pump spindles and fasteners * Agitators and mixer parts for caustic environments * Components exposed to halogen acids and salts * **Aerospace & Defense:** * Engine components * Fasteners and studs * Waveguide parts * **Electronics & Electrical:** * Electrodes and lead wires * Spark plug components * Electrical resistance wires (drawn from rod) * **Food & Pharmaceutical Processing:** * Machinery parts requiring high purity and corrosion resistance * Components for handling fatty acids and organic solvents * **Other Industrial:** * Screw machine parts * Bushings and bearings for corrosive service * Bars for subsequent forging operations --- **Disclaimer:** This data is provided for informational purposes only. The properties of Nickel 200 Rod can be influenced by the manufacturing process, size, and heat treatment. For critical applications, always consult the relevant material standard and a qualified materials engineer.

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 1625 gallon liquid totes Special package is available on request.