GH170 is a Ni-Cr-Co-based solid solution strengthened deformed superalloy, and its composition is characterized by containing Co20%+Cr20% and W20%. And add a small amount of lanthanum to strengthen the grain boundaries. GH170 superalloy has high strength and creep resistance at 1000ºC, and still has good second strength at 1100ºC-1200ºC. GH170 alloy has excellent oxidation resistance and good cold forming and welding process performance. The main product is sheet metal.
GH170 superalloy has been used to make parts of aero-engine afterburner regulating plate. The performance level of this alloy is close to that of the US solid solution strengthened cobalt-based alloys HA188 and MAR-M918. Recommended for use in combustion chambers and other high-temperature components of aero-engines, and as nozzle materials for rocket engines.
GH170 superalloy precipitates μ phase after long-term aging at 900 °C and 1000 °C, which reduces the room temperature plasticity of the alloy, but it can still meet the requirements of use.
GH3170 is a Ni-Cr-Co-based solid solution strengthened deformed superalloy, and its composition is characterized by containing Co20%+Cr20% and W20%. And add a small amount of lanthanum to strengthen the grain boundaries. The alloy has high strength and creep resistance at 1000ºC, and still has good second strength at 1100ºC-1200ºC. The alloy has excellent oxidation resistance and good cold forming and process properties. The main product is sheet metal.
The alloy has been used to make afterburner trim parts of aero-engines. The performance level of this alloy is close to that of the US solid solution strengthened cobalt-based alloys HA188 and MAR-18. Combustion chambers and other high-temperature components for aero-engines, as well as nozzle materials for rocket engines.
After the alloy is aged at 900ºC and 1000ºC for a long time, the μ phase is precipitated, which reduces the room temperature plasticity of the alloy, but it can still be used as required.
GH3170=GH170 chemical composition
Cr(%): 18.0~22.0
Mo(%): -
Ni(%): Margin
Co(%): 15.0~22.0
W(%): 18.0~21.0
Al(%): ≤0.5
Nb(%): -
Ti(%): -
B(%): ≤0.005
Fe(%): -
Mn(%): -
Others (%): Zr0.1~0.2, La0.1~0.3
GH3170 (GH170) physical and mechanical properties:
GH3170 Heat Treatment Guidelines:
Cold rolled sheet, hot rolled sheet: 1190ºC-1240ºC, air cooling or furnace cooling.
GH3170 Melting Temperature Scale:
1395ºC-1425ºC
GH3170 Density:
9.34g/cm3
GH3170 primary criteria:
GH3170 cold rolled sheet.
4. Application and characteristics of GH3170 (GH170):
The alloy has been used to make afterburner trim parts of aero-engines. The performance level of this alloy is close to that of the US solid solution strengthened cobalt-based alloys HA188 and MAR-M918. It is recommended for combustion chambers and other high-temperature components of aero-engines, as well as nozzle materials for rocket engines.
After long-term failure of the alloy at 900 °C and 1000 °C, the μ phase is separated, which reduces the room temperature plasticity of the alloy, but it can still meet the application requirements.
Five, GH3170 (GH170) processing and welding performance:
GH3170 can be welded by spot welding, seam welding and argon arc welding. The strength coefficient of welded joints is greater than 85%.
6. GH3170 (GH170) raw material standard:
1. Hot rolled bar 10~100mm, forged bar: 100mm~350mm, cold rolled sheet 0.05mm-4.0mm, hot rolled plate: 4mm~14mm, with 2mm-10mm, standard forging rings of each scale.
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