Alloy 205，Nickel 205 Forgings，UNS N02205，EFORU

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

### Technical Datasheet: Nickel 205 Forgings (UNS N02205) #### 1. Product Overview **Nickel 205 Forgings** (commercially known as **Alloy 205 Forgings**) are high-integrity components manufactured through controlled deformation processes from commercially pure nickel with magnesium addition (0.01-0.10%). This unique composition provides enhanced oxidation resistance and improved high-temperature performance compared to standard nickel forgings, making them suitable for continuous service temperatures up to **650°C (1200°F)**. The forging process refines the grain structure and improves material density, resulting in superior strength, toughness, and reliability for critical high-temperature applications. These components maintain excellent corrosion resistance while providing enhanced structural stability in demanding elevated temperature environments and oxidizing atmospheres. #### 2. Chemical Composition (% Weight) | Element | Content (%) (ASTM B564) | 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 (Solution Annealed Condition) | Property | Metric Unit | Imperial Unit | | :--- | :--- | :--- | | **Tensile Strength** | 420 - 550 MPa | 61 - 80 ksi | | **Yield Strength (0.2% Offset)** | 140 - 260 MPa | 20 - 38 ksi | | **Elongation (in 4D)** | 35 - 45% | 35 - 45% | | **Reduction of Area** | 60 - 70% | 60 - 70% | | **Hardness (Rockwell B)** | 75 - 90 HRB | 75 - 90 HRB | **High-Temperature Properties (at 500°C/932°F):** * **Tensile Strength:** ~ 290 MPa (42 ksi) * **Yield Strength:** ~ 130 MPa (19 ksi) * **Creep Rupture Strength:** Excellent long-term performance * **Oxidation Resistance:** Superior to standard nickel forgings #### 5. International Standards for Forgings | Standard Organization | Standard Number | Title / Scope | | :--- | :--- | :--- | | **ASTM International** | **ASTM B564** | Standard Specification for Nickel Alloy Forgings | | **ASME** | **SB-564** | Nickel Alloy Forgings (for BPVC) | | **ASTM International** | **ASTM B366** | Factory-Made Wrought Nickel Alloy Fittings | | **SAE Aerospace** | **AMS 5674** | Nickel Alloy Forgings | | **UNS** | **N02205** | Unified Numbering System | #### 6. Key Characteristics & Advantages * **Enhanced High-Temperature Capability:** Superior resistance to oxidation and embrittlement at temperatures up to 650°C (1200°F) * **Improved Mechanical Properties:** Forging process refines grain structure, resulting in enhanced strength and toughness * **Superior Structural Integrity:** Continuous grain flow patterns follow component contours for optimal stress distribution * **Excellent Corrosion Resistance:** Maintains outstanding performance in caustic environments and oxidizing atmospheres * **Directional Strength Properties:** Grain structure alignment with primary stress directions enhances reliability * **Good Machinability:** Can be precision machined while maintaining corrosion resistance #### 7. Common Forging Types & Processes * **Open Die Forgings:** - Large shafts and rotors for high-temperature service - Pressure vessel components for elevated temperature applications - Large valve bodies for high-temperature systems - Custom-shaped high-temperature components * **Closed Die Forgings:** - Pump impellers and casings for hot chemical service - High-temperature valve trim components - Complex shaped parts for furnace applications - High-temperature fitting blanks * **Ring Rolled Forgings:** - High-temperature flanges and collars - Bearing races for elevated temperature service - Specialized containment rings #### 8. Product Applications **High-Temperature Chemical Processing:** * Pump shafts and impellers for hot chemical service * High-temperature valve bodies and stems * Agitator shafts for elevated temperature reactors * Reactor internals for high-temperature processes **Heat Treatment Industry:** * High-temperature furnace components and fixtures * Heat treating baskets and trays for elevated temperature service * Radiant tube supports and hangers * Sintering furnace components **Aerospace & Defense:** * Rocket engine components * High-temperature turbine parts * Missile system components * Aircraft engine high-temperature parts **Power Generation:** * High-temperature turbine components * Boiler parts for elevated temperature service * Heat exchanger components * Nuclear reactor high-temperature components #### 9. Quality Assurance & Testing * **Non-Destructive Testing:** Ultrasonic, radiographic, liquid penetrant examination * **Mechanical Testing:** Tensile, impact, and hardness testing at room and elevated temperatures * **Metallurgical Examination:** Grain size analysis and microstructure evaluation * **Certification:** Full material traceability with comprehensive test reports --- **Disclaimer:** The technical information provided is for reference purposes. Actual properties may vary based on forging process, heat treatment, and component size. For critical applications, consult the complete material specifications and qualified engineering resources. Non-destructive testing is recommended for all critical forged components operating at elevated temperatures.

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 1659 gallon liquid totes Special package is available on request.