Alloy 205，Nickel 205 Sheet，UNS N02205，EFORU

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

### Technical Datasheet: Nickel 205 Sheet (UNS N02205) #### 1. Product Overview **Nickel 205 Sheet** (commercially known as **Alloy 205 Sheet**) is a flat-rolled product manufactured from commercially pure nickel with controlled magnesium addition (0.01-0.10%). This composition provides enhanced oxidation resistance and improved high-temperature performance compared to standard Nickel 200/201 sheets, while maintaining excellent corrosion resistance and formability. Supplied in various thicknesses with precise dimensional control, Nickel 205 Sheet is specifically engineered for applications requiring reliable performance in oxidizing atmospheres at elevated temperatures. The magnesium addition significantly improves the material's resistance to oxidation, making it ideal for high-temperature electrical components, heat treatment fixtures, and chemical processing equipment. #### 2. Chemical Composition (% Weight) | Element | Content (%) (ASTM B162) | Content (%) (Typical) | | :--- | :--- | :--- | | **Nickel (Ni)** | 99.0 min | ≥ 99.0 | | **Magnesium (Mg)** | **0.01 - 0.10** | **0.03 - 0.06** | | **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) | 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 | | **Curie Temperature** | ~ 360 °C | ~ 680 °F | #### 4. Mechanical Properties (Typical for Annealed Condition) | Property | Metric Unit | Imperial Unit | | :--- | :--- | :--- | | **Tensile Strength** | 380 - 500 MPa | 55 - 73 ksi | | **Yield Strength (0.2% Offset)** | 120 - 220 MPa | 17 - 32 ksi | | **Elongation (in 2 inches)** | 40 - 55% | 40 - 55% | | **Hardness (Rockwell B)** | 65 - 80 HRB | 65 - 80 HRB | **High-Temperature Properties (at 500°C/932°F):** * **Tensile Strength:** ~ 270 MPa (39 ksi) * **Yield Strength:** ~ 110 MPa (16 ksi) * **Oxidation Resistance:** Markedly superior to Nickel 200/201 #### 5. International Standards for Sheet | Standard Organization | Standard Number | Title / Scope | | :--- | :--- | :--- | | **ASTM International** | **ASTM B162** | Standard Specification for Nickel Plate, Sheet, and Strip | | **ASME** | **SB-162** | Nickel Plate, Sheet, and Strip | | **ASTM International** | **ASTM B906** | General Requirements for Flat-Rolled Nickel and Nickel Alloys | | **SAE Aerospace** | **AMS 5556** | Sheet, Strip, and Plate | | **UNS** | **N02205** | Unified Numbering System | #### 6. Key Characteristics & Advantages * **Superior Oxidation Resistance:** Enhanced protection against high-temperature oxidation up to 650°C (1200°F) * **Excellent High-Temperature Stability:** Improved mechanical properties retention at elevated temperatures * **Good Corrosion Resistance:** Effective performance in caustic environments and reducing atmospheres * **Excellent Formability:** Can be deep drawn, spun, stamped, and formed into complex shapes * **Good Weldability:** Readily welded using GTAW (TIG), GMAW (MIG), and resistance welding techniques * **Consistent Surface Quality:** Available with uniform surface finishes suitable for various applications #### 7. Temperature Capability * **Maximum Continuous Service:** **650°C (1200°F)** * **Intermittent Service:** Up to 870°C (1600°F) for short durations * **Optimal Performance Range:** 300-600°C (572-1112°F) * **Minimum Service Temperature:** -196°C (-321°F) #### 8. Product Applications **High-Temperature Electrical Components:** * Lead frames for high-temperature semiconductors * Electrical contacts and connectors * Heating element supports * High-temperature battery components **Heat Treatment Equipment:** * Furnace interior linings * Heat treatment fixture components * High-temperature conveyor belts * Sintering trays and containers **Chemical Processing:** * High-temperature reaction vessel linings * Chemical processing equipment panels * High-temperature evaporation dishes * Oxidation-resistant chemical containers **Aerospace Applications:** * High-temperature electrical insulation * Rocket component parts * Aircraft engine compartment linings * High-temperature sensor mounts #### 9. Fabrication Characteristics * **Forming:** Excellent deep drawing and stretching capabilities * **Machining:** Good machinability with proper tool geometry and cooling * **Welding:** All standard welding methods applicable with appropriate procedures * **Heat Treatment:** Solution annealing at 700-900°C (1292-1652°F) recommended * **Surface Treatment:** Accepts various finishes including polishing, coating, and plating --- **Disclaimer:** The technical information provided is for reference purposes. Actual properties may vary based on manufacturing process, thickness, temper, and heat treatment. For critical applications, consult the complete material specifications and qualified engineering resources. Performance validation at specific service conditions is recommended for high-temperature applications.

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 1656 gallon liquid totes Special package is available on request.