Nickelvac K-500 UNS N05500 Nickel Superalloy,AMS 467. ASTM F 467, F 468.,E FORU

### **Product Introduction: Nickelvac® K-500 (UNS N05500) Nickel-Copper Superalloy** **Nickelvac K-500** is a precipitation-hardenable nickel-copper alloy that combines the excellent corrosion resistance of Nickelvac 400 with significantly higher strength and hardness achieved through age hardening. This versatile superalloy maintains outstanding mechanical properties from sub-zero temperatures up to approximately 480°C (900°F) while offering excellent resistance to corrosion, erosion, and cavitation in marine and chemical environments. The alloy derives its enhanced strength from the addition of aluminum and titanium, which form the gamma prime [γ'] precipitation phase (Ni₃(Al, Ti)) during thermal aging. This unique combination of corrosion resistance and high strength makes it particularly valuable for demanding applications in marine engineering, aerospace, and oil and gas industries. --- #### **1. Chemical Composition (Weight %)** The typical chemical composition of Nickelvac K-500 per AMS 4676 and ASTM standards is as follows: | Element | Content (%) | Element | Content (%) | |---------|-------------|---------|-------------| | **Nickel (Ni)** | 63.0 - 70.0 | **Aluminum (Al)** | 2.3 - 3.15 | | **Copper (Cu)** | 27.0 - 33.0 | **Titanium (Ti)** | 0.35 - 0.85 | | **Iron (Fe)** | 2.0 max | **Carbon (C)** | 0.25 max | | **Manganese (Mn)** | 1.5 max | **Silicon (Si)** | 0.5 max | | **Sulfur (S)** | 0.01 max | **Other Elements** | 0.5 max | --- #### **2. Physical & Mechanical Properties** **Physical Properties:** | Property | Metric Units | Imperial Units | |----------|-----------------|------| | **Density** | 8.47 g/cm³ | 0.306 lb/in³ | | **Melting Range** | 1315 - 1350 °C | 2400 - 2460 °F | | **Thermal Conductivity** | 17.0 W/m·K | 118 Btu·in/hr·ft²·°F | | **Coefficient of Thermal Expansion** | 13.9 μm/m·°C | 7.7 μin/in·°F | | **Modulus of Elasticity** | 179 GPa | 26.0 x 10⁶ psi | | **Electrical Resistivity** | 0.65 μΩ·m | - | **Mechanical Properties (Typical Aged Condition):** | Property | Value (Typical) | |----------|-----------------| | **Tensile Strength** | 1000 - 1200 MPa (145 - 174 ksi) | | **Yield Strength (0.2% Offset)** | 690 - 860 MPa (100 - 125 ksi) | | **Elongation** | 20 - 30% | | **Hardness (Rockwell C)** | 25 - 35 HRC | --- #### **3. Key Characteristics & Product Applications** **Key Characteristics:** - **High Strength-to-Weight Ratio**: Superior mechanical properties compared to non-age-hardenable nickel-copper alloys - **Excellent Corrosion Resistance**: Maintains the corrosion resistance of Nickelvac 400 in seawater, acids, and alkaline environments - **Outstanding Fatigue Resistance**: Excellent performance under cyclic loading conditions - **Good Non-Magnetic Properties**: Essentially non-magnetic in aged condition - **Superior Wear Resistance**: Excellent resistance to galling and erosion - **Cryogenic to Elevated Temperature Capability**: Maintains properties from -240°C to 480°C (-400°F to 900°F) **Product Applications:** Nickelvac K-500 is specified for critical components requiring both strength and corrosion resistance: - **Marine Engineering**: - Pump shafts and impellers in seawater service - Marine propeller shafts - Bolting and fasteners for offshore structures - Subsea components and connectors - **Oil & Gas Industry**: - Downhole tool components - Wellhead parts and Christmas tree components - Valve stems and trim in sour service - Drill string accessories - **Aerospace & Defense**: - Aircraft engine components - Turbine blades and seals - Fasteners per AMS 4676 - Structural components requiring non-magnetic properties - **Chemical Processing**: - Agitator shafts in corrosive environments - Pump components handling abrasive slurries - Reactor internals - Heat exchanger components --- #### **4. International Standards & Specifications** Nickelvac K-500 is covered by major international standards: **Aerospace Material Specifications (AMS):** - **AMS 4676**: Bars, Forgings, and Rings (Age Hardened) **ASTM Standards:** - **ASTM F 467**: Nonferrous Nuts for General Use - **ASTM F 468**: Nonferrous Bolts, Hex Cap Screws, and Studs for General Use **Other International Standards:** - **UNS**: N05500 - **ASME**: SB-865 - **EN**: NW 5500 (NiCu30Al) - **ISO**: 6208 (NW 5500) - **DIN**: 2.4375 - **JIS**: NW 5500 --- #### **Summary of Key Advantages** - **Enhanced Mechanical Properties**: Significantly higher strength and hardness than Nickelvac 400 while maintaining corrosion resistance - **Versatile Performance**: Suitable for both corrosive and high-strength applications - **Excellent Fabricability**: Can be welded and machined using appropriate techniques - **Broad Temperature Range**: Reliable performance from cryogenic to elevated temperatures - **Proven Reliability**: Extensive service history in demanding marine and oilfield applications - **Non-Magnetic Characteristics**: Essential for applications requiring non-magnetic properties **Technical Note**: Nickelvac K-500 requires solution annealing followed by age hardening to achieve optimal mechanical properties. Typical heat treatment involves solution treating at 980°C (1800°F) followed by aging at 595°C (1100°F) for 16 hours. The alloy can be welded in the solution-treated condition using matching filler metals, with subsequent age hardening to restore mechanical properties. Machining should be performed in the solution-treated condition for best results.

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 3151 gallon liquid totes Special package is available on request.