IN738LC High Temperature Alloy Powder Low Carbon

IN738LC is a high-temperature nickel-based superalloy that is often used in gas turbine engines and other high-temperature applications. When this alloy is in the form of a powder, it retains the material properties of the bulk alloy but may exhibit some unique characteristics due to its particulate nature. Here are some of the key material properties of IN738LC high-temperature alloy powder:

Chemical Composition

• Nickel (Ni): 50-55%

• Chromium (Cr): 17-21%

• Cobalt (Co): 12-15%

• Aluminum (Al): 4.7-5.3%

• Tungsten (W): 3.0-5.0%

• Molybdenum (Mo): 1.0-1.5%

• Titanium (Ti): 1.8-2.2%

• Carbon (C): 0.05-0.15%

• Boron (B): 0.005-0.015%

• Zirconium (Zr): 0.03-0.08%

• Iron (Fe): ≤0.5%

• Silicon (Si): ≤0.4%

• Manganese (Mn): ≤0.35%

• Sulfur (S): ≤0.015%

Physical Properties

• Density: Approximately 8.2 g/cm3

• Melting Point: Approximately 1310-1370°C

Mechanical Properties

• Yield Strength (at 20°C): 830-960 MPa

• Ultimate Tensile Strength (at 20°C): 1030-1170 MPa

• Elongation (at 20°C): 15-20%

• Modulus of Elasticity: 200-210 GPa

• Creep Strength: High creep strength at temperatures up to 760°C

Thermal Properties

• Coefficient of Thermal Expansion (20-1000°C): 11.5-12.5 x 10^-6 /°C

• Thermal Conductivity (at 20°C): 15-17 W/(m·K)

• Specific Heat Capacity (at 20°C): 440-460 J/(kg·K)

Powder Characteristics

• Particle Size Distribution: Typically ranges from 15 to 150 microns, with a median particle size of around 50-70 microns.

• Particle Shape: Spherical or near-spherical to ensure good flowability and packing density.

• Surface Area: Higher surface area compared to bulk material, which can affect reactivity and sintering behavior.

• Apparent Density: Typically 2.8-3.2 g/cm3

Applications

• Additive Manufacturing: Used in processes like Selective Laser Melting (SLM) and Electron Beam Melting (EBM) to create complex, high-performance parts for aerospace and industrial gas turbines.

• Thermal Spraying: Used in thermal spray coatings to enhance the wear and corrosion resistance of components.

• Powder Metallurgy: Used in the production of high-temperature components through techniques like hot isostatic pressing (HIP).