Alloy 205，Nickel 205 Rod，UNS N02205，EFORU

British Specs:，American Specs:AMS 5555 Wire and Ribbon MIL-N-46025，German Specs:

### **Technical Datasheet: Nickel 205 Rod (UNS N02205)** #### **1. Product Overview** **Nickel 205 Rod** (commercially known as **Alloy 205 Rod**) is a wrought product form manufactured from commercially pure nickel with controlled magnesium addition. This unique composition provides improved oxidation resistance and elevated temperature strength compared to standard Nickel 200/201 rods, while maintaining excellent corrosion resistance and electrical conductivity. The magnesium content (typically 0.01-0.10%) enhances the material's performance in high-temperature applications, making Nickel 205 Rod particularly suitable for electronic components, electrical contacts, and applications requiring long-term stability in oxidizing atmospheres. The rod form is ideal for machining into precision components that demand both corrosion resistance and elevated temperature capability. #### **2. Chemical Composition (% Weight)** | Element | Content (%) (Typical) | Key Feature | | :--- | :--- | :--- | | **Nickel (Ni)** | ≥ 99.0 | Base element | | **Magnesium (Mg)** | **0.03 - 0.06** | **Improves oxidation resistance** | | **Carbon (C)** | 0.08 max | Standard control | | **Manganese (Mn)** | 0.20 max | - | | **Iron (Fe)** | 0.20 max | - | | **Cu (Cu)** | 0.15 max | - | | **Silicon (Si)** | 0.15 max | - | | **Sulfur (S)** | 0.005 max | - | #### **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) | 69 W/m·K | 478 BTU·in/hr·ft²·°F | | **Electrical Resistivity** | 0.096 µΩ·m | 36.8 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 | #### **4. Mechanical Properties (Typical for Rod)** **Annealed Condition:** * **Tensile Strength:** 400 - 520 MPa (58 - 75 ksi) * **Yield Strength (0.2% Offset):** 120 - 240 MPa (17 - 35 ksi) * **Elongation (in 2 inches):** 40 - 50% * **Hardness (Rockwell B):** 70 - 85 HRB **High-Temperature Performance (at 500°C/932°F):** * **Tensile Strength:** ~ 280 MPa (41 ksi) * **Yield Strength:** ~ 120 MPa (17 ksi) * **Oxidation Resistance:** Superior to Nickel 200/201 #### **5. International Standards for Rod** | Standard Organization | Standard Number | Title / Scope | | :--- | :--- | :--- | | **ASTM International** | **ASTM B160** | Standard Specification for Nickel Rod and Bar | | **ASME** | **SB-160** | Nickel Rod and Bar | | **UNS** | **N02205** | Unified Numbering System | | **Custom Specifications** | **Various** | Manufacturer-specific standards | #### **6. Key Characteristics & Advantages** * **Enhanced Oxidation Resistance:** Magnesium addition provides superior protection against high-temperature oxidation * **Improved High-Temperature Strength:** Better mechanical properties retention at elevated temperatures * **Excellent Machinability:** Good machining characteristics for precision component manufacturing * **Maintained Electrical Conductivity:** Suitable for electrical and electronic applications * **Good Weldability:** Can be welded using standard techniques including GTAW and GMAW * **Corrosion Resistance:** Maintains good resistance to caustics and reducing environments #### **7. Temperature Capability** * **Maximum Continuous Service:** **650°C (1200°F)** * **Intermittent Service:** Up to 870°C (1600°F) * **Optimal Performance Range:** 300-600°C (572-1112°F) #### **8. Product Applications** **Electronics & Electrical Components:** * Lead frames and connector pins * Resistance welding electrodes * Electrical contact components * Semiconductor manufacturing parts **Industrial Applications:** * Furnace component shafts * Heat treatment fixture components * Chemical processing equipment parts * High-temperature fasteners **Automotive Industry:** * Spark plug electrodes * Sensor components * High-temperature electrical connections * Engine management system parts **Specialized Applications:** * Glass-to-metal seal components * Vacuum tube parts * High-temperature instrumentation * Aerospace electrical components #### **9. Manufacturing Considerations** * **Machining:** Good machinability with proper tool selection and cooling * **Heat Treatment:** Solution annealing at 700-900°C (1292-1652°F) * **Surface Finish:** Can be polished to high surface quality * **Quality Control:** Standard non-destructive testing methods applicable --- **Disclaimer:** The information provided is for technical reference. Actual properties may vary based on manufacturing process, diameter, and heat treatment. For critical applications, consult with materials engineers and conduct appropriate testing to verify performance under specific service conditions.

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 1651 gallon liquid totes Special package is available on request.