Alloy 205，Nickel 205 Plate，UNS N02205，EFORU

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

### Technical Datasheet: Nickel 205 Plate (UNS N02205) #### 1. Product Overview **Nickel 205 Plate** (commercially known as **Alloy 205 Plate**) is a low-carbon nickel plate with controlled magnesium addition (0.01-0.10%), specifically designed for applications requiring enhanced oxidation resistance and improved high-temperature performance. This unique composition provides superior protection against high-temperature oxidation while maintaining the excellent corrosion resistance and mechanical properties of pure nickel. Manufactured to precise thickness tolerances and superior surface quality, Nickel 205 Plate offers reliable performance in continuous service temperatures up to **650°C (1200°F)**, making it particularly suitable for high-temperature chemical processing, heat treatment equipment, and electrical applications where oxidation resistance is critical. #### 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** | 400 - 520 MPa | 58 - 75 ksi | | **Yield Strength (0.2% Offset)** | 120 - 240 MPa | 17 - 35 ksi | | **Elongation (in 2 inches)** | 40 - 50% | 40 - 50% | | **Hardness (Rockwell B)** | 70 - 85 HRB | 70 - 85 HRB | **Elevated Temperature Properties (at 500°C/932°F):** * **Tensile Strength:** ~ 280 MPa (41 ksi) * **Yield Strength:** ~ 120 MPa (17 ksi) * **Oxidation Resistance:** Significantly improved over Nickel 200/201 #### 5. International Standards for Plate | 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 * **Enhanced Oxidation Resistance:** Superior protection against high-temperature oxidation up to 650°C (1200°F) * **Improved High-Temperature Stability:** Better mechanical properties retention at elevated temperatures * **Excellent Corrosion Resistance:** Good performance in caustic environments and reducing atmospheres * **Superior Fabricability:** Can be readily formed, sheared, punched, and welded using standard techniques * **Good Weldability:** Excellent weldability using GTAW (TIG), GMAW (MIG), and SMAW processes * **Maintained Electrical Conductivity:** Suitable for electrical applications requiring plate material #### 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 Chemical Processing:** * High-temperature reaction vessel components * Oxidation-resistant process equipment * High-temperature evaporator and distillation column parts * Chemical processing equipment for oxidizing atmospheres **Heat Treatment Industry:** * Furnace retorts and muffles * Heat treating fixtures and baskets * High-temperature furnace structural components * Sintering trays and plates **Electrical Applications:** * High-temperature electrical bus bars * Electrical contact components * Semiconductor processing equipment * High-temperature electrical insulation supports **Aerospace & Defense:** * Rocket engine heat shield components * High-temperature structural panels * Aerospace electrical system components * High-temperature instrumentation platforms #### 9. Manufacturing & Processing * **Forming:** Good formability using standard bending and forming equipment * **Machining:** Good machinability with proper tool selection and cooling * **Welding:** Compatible with common welding methods using matching filler metals * **Heat Treatment:** Solution annealing recommended at 700-900°C (1292-1652°F) * **Surface Finish:** Available in various finishes including mill finish, polished, and special coatings --- **Disclaimer:** The technical information provided is for reference purposes. Actual properties may vary based on manufacturing process, thickness, and heat treatment. For critical applications, consult the complete material specifications and qualified engineering resources. Performance verification at specific service temperatures 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 1655 gallon liquid totes Special package is available on request.