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# Udimet 720 Nickel Alloy Powder Properties and Applications
## Introduction to Udimet 720 Nickel Alloy Powder
Udimet 720 is a high-performance nickel-based superalloy powder widely used in demanding aerospace and industrial applications. This precipitation-hardened alloy offers exceptional strength, corrosion resistance, and thermal stability at elevated temperatures, making it ideal for critical components in gas turbine engines and other high-stress environments.
## Chemical Composition of Udimet 720
The chemical composition of Udimet 720 nickel alloy powder is carefully balanced to achieve its superior properties:
Element | Composition (%)
Nickel (Ni) | Balance
Keyword: Udimet720 Nickel Alloy Powder
Chromium (Cr) | 15.0-17.0
Cobalt (Co) | 14.0-15.5
Molybdenum (Mo) | 2.75-3.25
Titanium (Ti) | 4.75-5.25
Aluminum (Al) | 2.25-2.75
Iron (Fe) | ≤0.5
Carbon (C) | ≤0.03
Boron (B) | 0.01-0.02
Zirconium (Zr) | 0.03-0.06
This precise combination of elements creates a material with excellent high-temperature strength and oxidation resistance.
## Physical Properties of Udimet 720 Powder
Udimet 720 powder exhibits several notable physical characteristics:
– Density: Approximately 8.22 g/cm³
– Melting Range: 1290-1345°C (2354-2453°F)
– Thermal Conductivity: 11.2 W/m·K at 20°C
– Coefficient of Thermal Expansion: 13.5 μm/m·K (20-100°C)
– Electrical Resistivity: 1.25 μΩ·m at 20°C
The powder form typically has a spherical morphology with particle sizes ranging from 15 to 53 microns for most additive manufacturing applications.
## Mechanical Properties of Udimet 720
When properly processed, Udimet 720 demonstrates outstanding mechanical performance:
### Room Temperature Properties
– Tensile Strength: 1200-1400 MPa
– Yield Strength (0.2% offset): 850-1000 MPa
– Elongation: 12-20%
– Hardness: 35-45 HRC
### Elevated Temperature Properties (650°C/1200°F)
– Tensile Strength: 950-1100 MPa
– Yield Strength: 750-900 MPa
– Creep Resistance: Excellent up to 750°C
– Fatigue Strength: Superior to most nickel alloys
These properties make Udimet 720 particularly suitable for components subjected to high stress at elevated temperatures.
## Applications of Udimet 720 Nickel Alloy Powder
Udimet 720 powder finds extensive use in critical aerospace and industrial applications:
### Aerospace Industry
– Gas turbine engine components (disks, blades, shafts)
– Compressor and turbine sections
– Afterburner components
– Rocket engine parts
### Power Generation
– Turbine blades for power plants
– High-temperature fasteners
– Combustion chamber components
### Industrial Applications
– High-performance valves and fittings
– Chemical processing equipment
– Nuclear reactor components
– Oil and gas downhole tools
## Processing and Manufacturing with Udimet 720 Powder
### Powder Production
Udimet 720 powder is typically produced using:
– Gas atomization (most common)
– Plasma rotating electrode process (PREP)
– Vacuum induction melting gas atomization (VIGA)
### Additive Manufacturing Techniques
– Selective Laser Melting (SLM)