GH3230 High Temperature Alloy Powder Low Carbon

GH3230 is a high-temperature nickel-based superalloy known for its excellent mechanical properties and resistance to high-temperature environments. When GH3230 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 the key material properties of GH3230 high-temperature alloy powder:

Chemical Composition

Nickel (Ni): 50-55%

Chromium (Cr): 18-22%

Iron (Fe): 10-15%

Molybdenum (Mo): 2.5-3.5%

Tungsten (W): 3.0-4.5%

Cobalt (Co): 0-5%

Aluminum (Al): 0.5-1.2%

Titanium (Ti): 0.5-1.2%

Carbon (C): 0.05-0.15%

Boron (B): 0.001-0.015%

Silicon (Si): 0.35% max

Manganese (Mn): 0.35% max

Sulfur (S): 0.015% max

Physical Properties

Density: Approximately 8.24 g/cm3

Melting Point: 1350-1380°C

Mechanical Properties

Yield Strength (at 20°C): 830-960 MPa

Ultimate Tensile Strength (at 20°C): 1200-1400 MPa

Elongation (at 20°C): 15-25%

Modulus of Elasticity: 200-210 GPa

Creep Strength: High creep strength at temperatures up to 700°C

Thermal Properties

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

Thermal Conductivity (at 20°C): 13-15 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, automotive, 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).

Processing Considerations

Oxidation Resistance: Excellent resistance to oxidation up to 760°C.

Corrosion Resistance: Good resistance to various forms of corrosion, including pitting and crevice corrosion.

Weldability: Can be welded, but requires careful control of heat input and post-weld heat treatment to maintain mechanical properties.

Additional Notes

Heat Treatment: GH3230 powder can be heat-treated to optimize its mechanical properties. Common heat treatments include solution annealing and aging.

Post-Processing: Parts made from GH3230 powder often require post-processing steps such as hot isostatic pressing (HIP) to remove porosity and improve mechanical properties.

Summary

These properties make GH3230 powder a versatile material for high-temperature applications where strength, creep resistance, and environmental stability are critical. It is particularly well-suited for use in the aerospace, automotive, and industrial gas turbine industries.