Nickelvac 80 A UNS N07080 Nickel Superalloy, ASTM B 637,E FORU

### **Product Introduction: Nickelvac® 80A (UNS N07080) Nickel-Based Superalloy** **Nickelvac 80A (UNS N07080)** is a precipitation-hardenable nickel-chromium superalloy renowned for its exceptional high-temperature strength and outstanding resistance to oxidation and corrosion. This alloy is strengthened by the addition of titanium and aluminum, which form the gamma prime (γ') phase [Ni₃(Al, Ti)] during age hardening. It maintains excellent mechanical properties at temperatures up to 815°C (1500°F), making it particularly suitable for high-stress applications in aerospace and industrial gas turbines. The alloy demonstrates good creep resistance and thermal fatigue properties, combined with excellent stability under prolonged exposure to elevated temperatures. Its balanced composition provides optimal performance in both oxidizing and reducing atmospheres, establishing it as a reliable material for critical high-temperature components. --- #### **1. Chemical Composition (Weight %)** The typical chemical composition of Nickelvac 80A per ASTM B637 is as follows: | Element | Content (%) | Element | Content (%) | |---------|-------------|---------|-------------| | **Nickel (Ni)** | Balance | **Titanium (Ti)** | 1.8 - 2.7 | | **Chromium (Cr)** | 18.0 - 21.0 | **Aluminum (Al)** | 1.0 - 1.8 | | **Iron (Fe)** | 3.0 max | **Copper (Cu)** | 0.2 max | | **Carbon (C)** | 0.04 - 0.10 | **Silicon (Si)** | 1.0 max | | **Manganese (Mn)** | 1.0 max | **Sulfur (S)** | 0.015 max | | **Cobalt (Co)** | 2.0 max | **Boron (B)** | 0.008 max | --- #### **2. Physical & Mechanical Properties** **Physical Properties:** | Property | Metric Units | Imperial Units | |----------|-----------------|------| | **Density** | 8.19 g/cm³ | 0.296 lb/in³ | | **Melting Range** | 1360 - 1385 °C | 2480 - 2525 °F | | **Thermal Conductivity** | 11.7 W/m·K | 81.1 Btu·in/hr·ft²·°F | | **Coefficient of Thermal Expansion** | 13.9 μm/m·°C | 7.7 μin/in·°F | | **Modulus of Elasticity** | 224 GPa | 32.5 x 10⁶ psi | | **Specific Heat** | 440 J/kg·K | 0.105 Btu/lb·°F | **Mechanical Properties (Solution Treated and Aged Condition):** | Property | Value | |----------|-----------------| | **Tensile Strength** | 1000-1200 MPa | 145-174 ksi | | **Yield Strength (0.2% Offset)** | 700-850 MPa | 102-123 ksi | | **Elongation** | 15-25% | | **Hardness (Rockwell C)** | 30-40 HRC | **Elevated Temperature Properties (at 750°C/1382°F):** | **Tensile Strength** | 580 MPa | 84 ksi | | **Yield Strength** | 450 MPa | 65 ksi | | **Creep Rupture Strength (1000h)** | 180 MPa | 26 ksi | --- #### **3. Key Characteristics & Product Applications** **Key Characteristics:** - **Excellent High-Temperature Strength**: Maintains mechanical properties up to 815°C (1500°F) - **Superior Creep Resistance**: Outstanding long-term load-bearing capability at elevated temperatures - **Oxidation Resistance**: Excellent resistance to scaling and oxidation in high-temperature environments - **Thermal Fatigue Resistance**: Good performance under cyclic thermal stress conditions - **Age Hardenable**: Can be heat treated to optimize mechanical properties - **Good Fabricability**: Can be forged, machined, and welded using appropriate techniques **Product Applications:** Nickelvac 80A is extensively used in high-temperature applications: - **Aerospace Industry**: - Gas turbine blades and vanes - Turbine discs and rotors - Combustion chamber components - Afterburner parts - Jet engine fasteners - **Industrial Gas Turbines**: - Turbine blades and nozzles - Rotor discs and shafts - Combustion liners - Heat exchanger components - **Power Generation**: - Gas turbine components for power plants - High-temperature bolting - Valve components - Thermal processing equipment - **Industrial Processing**: - Heat treatment fixtures - Furnace components - High-temperature fasteners - Petrochemical processing equipment --- #### **4. International Standards & Specifications** Nickelvac 80A is covered by major international standards: **Primary Specifications:** - **ASTM B637**: Standard Specification for Precipitation-Hardening Nickel Alloy Bars, Forgings, and Forging Stock for High-Temperature Service **Other International Standards:** - **UNS**: N07080 - **AMS**: 5871 (Bars, Forgings, and Rings) - **EN**: 2.4631 (NiCr20TiAl) - **DIN**: 2.4631 - **ISO**: 6207 (NW 7080) - **JIS**: NW 7080 --- #### **Summary of Key Advantages** - **Optimized High-Temperature Performance**: Excellent strength and creep resistance up to 815°C - **Superior Oxidation Resistance**: Outstanding protection against high-temperature corrosion - **Proven Reliability**: Extensive service history in critical aerospace applications - **Controlled Heat Treatment**: Can be optimized for specific application requirements - **Good Fabricability**: Suitable for manufacturing complex components - **Comprehensive Standardization**: Well-established in international specifications **Technical Note**: Nickelvac 80A requires careful heat treatment to achieve optimal properties. Typical treatment involves solution annealing at 1080°C (1975°F) followed by air cooling, then aging at 700-750°C (1290-1380°F) for 16 hours. The alloy can be welded using matching filler metals, with post-weld heat treatment recommended to restore properties. Machining should be performed in the solution-treated condition for best results. The material's performance is particularly notable in applications requiring sustained strength under thermal cycling 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 3156 gallon liquid totes Special package is available on request.