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Udimet 720 Nickel Alloy Powder for High-Performance Applications

Introduction

Udimet 720 is a high-strength, nickel-based superalloy powder widely used in demanding applications such as aerospace, power generation, and industrial gas turbines. Known for its exceptional mechanical properties, corrosion resistance, and high-temperature stability, Udimet 720 is a preferred material for components subjected to extreme stress and thermal conditions.

Composition and Technical Parameters

Udimet 720 is a precipitation-hardened nickel alloy with a carefully balanced composition to optimize performance. The primary elements include:

  • Nickel (Ni): 55-60% (base element)

  • Chromium (Cr): 15-17% (enhances oxidation resistance)

  • Cobalt (Co): 14-16% (improves high-temperature strength)

  • Molybdenum (Mo): 2.5-3.5% (increases creep resistance)

  • Titanium (Ti): 4.5-5.5% (forms gamma-prime precipitates)

  • Aluminum (Al): 2.0-3.0% (contributes to precipitation hardening)

Key Mechanical Properties

The alloy exhibits outstanding mechanical properties, especially at elevated temperatures:

  • Tensile Strength: 1200-1400 MPa (at room temperature)

  • Yield Strength: 900-1100 MPa (at room temperature)

  • Elongation: 10-15% (at room temperature)

  • Creep Resistance: Excellent up to 750°C (1382°F)

  • Fatigue Resistance: High cyclic loading capability

Manufacturing Process

Udimet 720 powder is typically produced using gas atomization, ensuring a fine, spherical particle size distribution ideal for additive manufacturing (AM) and powder metallurgy (PM) processes. The powder characteristics include:

  • Particle Size: 15-45 µm (for selective laser melting, SLM)

  • Flowability: Excellent (Hall flow rate < 25 s/50g)

  • Density: > 99.5% (after consolidation)

Applications of Udimet 720 Nickel Alloy Powder

Due to its superior properties, Udimet 720 is employed in critical high-performance applications:

Aerospace Industry

Udimet 720 is extensively used in turbine engine components, including:

  • High-pressure turbine (HPT) disks

  • Blades and vanes

  • Combustor casings

Power Generation

In gas and steam turbines, the alloy is utilized for:

  • Rotor shafts

  • Compressor blades

  • High-temperature fast
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