GH5188 is a Co-Ni-Cr based solution-strengthened deformed superalloy suitable for temperatures up to 1100 degrees Celsius. The alloy has good high-temperature performance, comprehensive properties and processing properties, and is suitable for the manufacture of high-temperature parts such as combustion chamber barrels and guide vanes of aero engines.
Material characteristics: GH5188 alloy is solution strengthened by adding W, and contains a high content of chromium and trace lanthanum, which has good high-temperature performance and comprehensive properties. In addition, it has good plasticity and welding properties for hot and cold processing.
Performance data. Chemical Composition:
Carbon (c): 005-0.15%
Silicon (Si): 02-0.5%
Manganese (mn): 125%
Phosphorus (p): 002%
Sulfur (s): 0015%
Chromium (CR): 20-24%.
Nickel (Ni): 20-24%.
Lanthanum (la): 003-0.12%
Copper (cu): 007%
Iron (Fe): 300%
Boron(b): 0015%
Tungsten (W): 13-16%.
Cobalt (CO): Margin.
Physical Properties: Density: 909 g/cm³
Magnetic: None. Thermal conductivity: 1223-29.06 w/(m·k) (200~900℃)
Resistivity: 1051-1.213 ω·mm²/m (20~900℃)
Specific heat capacity: 208-588 J (kg·k) (100 900 )
Linear expansion coefficient: 157 × 10^-6 k^-1 (20~900℃)
Mechanical Properties: Hot Roll Bar (Standard Heat Treatment):
Tensile strength B: 860 MPa
Elongation a: 45%.
Cold Rolled Plate (Standard Heat Treatment):
Tensile strength b: 860-620 MPa
Elongation a: 45%.
Fields of application. GH5188 alloy is mainly used in the manufacture of high-temperature parts such as combustion chamber barrels and guide vanes of aero engines.
Comparison with GH5605.
Compared to GH5605, GH5188 has a wider range of high-temperature applications and can be used in temperatures below 1100 degrees Celsius. In addition, GH5188 has a higher chromium content and trace lanthanum levels, as well as better plasticity and welding properties for hot and cold processing.
Epilogue. GH5188 superalloy is widely used in the manufacture of high-temperature parts such as aero engines due to its excellent high-temperature performance and comprehensive properties, providing reliable material support for the aerospace field.