Nickelvac N-90 Nickel Superalloy,UNS N07090; AMS 5829. SAE J 775,E FORU

**Product Overview: Nickelvac® N-90 Nickel Superalloy (UNS N07090)** **Nickelvac® N-90** (UNS N07090) is a premium precipitation-hardenable nickel-chromium-cobalt superalloy designed for exceptional high-temperature performance in demanding aerospace and industrial applications. Conforming to AMS 5829 and SAE J775 standards, this advanced alloy combines excellent high-temperature strength, superior oxidation resistance, and outstanding creep resistance, making it particularly suitable for critical rotating components in gas turbine engines. --- ### **Key Characteristics & Advantages** - **Exceptional High-Temperature Strength**: Maintains mechanical properties up to 980°C (1800°F) - **Superior Creep Resistance**: Excellent long-term performance under stress at elevated temperatures - **Outstanding Oxidation Resistance**: Reliable performance in high-temperature oxidizing atmospheres - **Excellent Thermal Fatigue Resistance**: Withstands cyclic thermal stresses - **Optimized Microstructural Stability**: Resists degradation under prolonged thermal exposure - **Good Fabricability**: Can be processed using conventional manufacturing methods --- ### **Chemical Composition (Typical Weight %)** | Element | Content Range (%) | Function Description | |------------------|-------------------|-----------------------| | **Nickel (Ni)** | Balance | Base element providing austenitic matrix | | **Chromium (Cr)**| 18.0-21.0 | Primary element for oxidation and corrosion resistance | | **Cobalt (Co)** | 15.0-21.0 | Enhances high-temperature strength and stability | | **Molybdenum (Mo)**| 3.50-5.00 | Solid solution strengthener | | **Aluminum (Al)**| 1.30-1.80 | Forms γ' precipitation hardening phase | | **Titanium (Ti)**| 2.80-3.20 | Enhances γ' formation and stability | | **Iron (Fe)** | ≤2.0 | Controlled impurity | | **Carbon (C)** | 0.05-0.10 | Controlled for carbide formation | | **Boron (B)** | 0.003-0.010 | Enhances grain boundary strength | | **Zirconium (Zr)**| 0.03-0.10 | Improves creep resistance | --- ### **Physical Properties** | Property | Typical Value | Test Conditions | |---------------------------------|------------------------|--------------------------| | **Density** | 8.20 g/cm³ | At room temperature | | **Melting Range** | 1335-1360°C | Solidus-Liquidus | | **Thermal Expansion Coefficient**| 13.8 × 10⁻⁶/°C | 20-1000°C range | | **Thermal Conductivity** | 14.5 W/m·K | At 800°C | | **Specific Heat Capacity** | 440 J/kg·K | At 800°C | | **Electrical Resistivity** | 1.26 μΩ·m | At 20°C | | **Young's Modulus** | 212 GPa | At room temperature | --- ### **Mechanical Properties** #### **Solution Treated and Aged Condition** | Property | Temperature | Typical Value | |------------------------|-------------|----------------------| | **Tensile Strength** | 20°C | 1275-1400 MPa | | **Tensile Strength** | 815°C | 895-965 MPa | | **Yield Strength (0.2%)** | 20°C | 860-980 MPa | | **Yield Strength (0.2%)** | 815°C | 655-725 MPa | | **Elongation** | 20°C | 15-22% | | **Elongation** | 815°C | 12-18% | | **Reduction of Area** | 20°C | 18-25% | | **Creep Rupture Life** | 815°C/310 MPa | 120-200 hours | --- ### **Heat Treatment** Standard heat treatment sequence includes: - **Solution Treatment**: 1080°C ± 10°C for 4 hours, rapid air cool - **Primary Aging**: 845°C ± 10°C for 4 hours, air cool - **Secondary Aging**: 760°C ± 10°C for 16 hours, air cool --- ### **International Standards & Specifications** Nickelvac® N-90 complies with the following international standards: - **AMS 5829**: Nickel Alloy, Corrosion and Heat Resistant, Investment Castings 60Ni - 19Cr - 16Co - 4.2Mo - 3.1Ti - 1.5Al - **SAE J775**: General Specification for Nickel-Base Superalloy Castings - **ASTM B637**: Precipitation Hardening Nickel Alloy Bars, Forgings, and Forging Stock - **GE Specification**: S67 - **Pratt & Whitney**: PWA 1015 - **Rolls-Royce**: RPS 709 --- ### **Applications** 1. **Aerospace Gas Turbine Engines**: - Turbine blades and vanes - Turbine disks and rotors - Compressor components - Shafts and spools - Combustion chamber parts 2. **Industrial Gas Turbines**: - Power generation turbine components - Mechanical drive turbine parts - Hot gas path components - Turbine wheels and disks 3. **High-Temperature Structural Components**: - Rocket engine components - Nuclear reactor parts - High-temperature fasteners - Specialized industrial equipment 4. **Investment Casting Applications**: - Complex shaped turbine components - Integral rotor castings - Directionally solidified parts - Single crystal applications --- ### **Manufacturing Considerations** - **Investment Casting**: Primary manufacturing method for complex components - **Hot Isostatic Pressing**: Used to improve density and properties - **Machining**: Requires specialized tools and techniques for nickel-based superalloys - **Heat Treatment**: Requires precise control of time-temperature parameters - **Quality Control**: Stringent NDT requirements including X-ray and FPI --- ### **Available Forms** - **Investment Castings**: Complex near-net-shape components - **Bar and Rod**: Various diameters and lengths - **Forgings**: Custom shapes and sizes - **Billet**: For subsequent manufacturing operations - **Powder**: For powder metallurgy applications --- **Disclaimer**: *The information provided is for technical reference purposes only. Nickelvac® N-90 is a specialized superalloy requiring proper processing and heat treatment to achieve specified properties. Actual performance may vary depending on manufacturing processes, heat treatment parameters, and specific application conditions. Users should consult with qualified materials engineers and adhere to OEM specifications for critical applications. All manufacturing and processing should follow approved procedures and quality standards.*

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 3121 gallon liquid totes Special package is available on request.