GH2907

GH2907 superalloy is a Fe-Ni-Co base precipitation hardening low expansion deformation superalloy, which is comprehensively strengthened by adding niobium, titanium, silicon and trace boron toxin. The alloy has high strength, low expansion coefficient, good cold and hot fatigue resistance and almost constant elastic modulus below 650 ℃. Curie point is between 400 ℃ and 450 ℃. The expansion coefficient of the alloy below the Curie point is basically unchanged. Suitable for making various aviation and aerospace engine rings and casings used below 650 ℃; GH2907 superalloy has been used to make the rear casing, bearing ring, heat insulation ring, combustion chamber sealing ring, honeycomb seat, turbine outer ring and other parts of the high pressure compressor of the aero-engine, and is in good use. Because the alloy does not contain chromium and aluminum. This standard is applicable to deformed superalloys, cast superalloys (equiaxed cast superalloys, directionally solidified columnar superalloys and single crystal superalloys), high-temperature alloy wires for welding, powder metallurgy superalloys, dispersion strengthened superalloys and intermetallic compound high-temperature materials.

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Brand	GH2907
Old brand	GH907
Technicalstandard	GJB 5261 Specification for low expansion superalloy bars HB 7682Low expansion GH907 superalloy ring blank and ring parts HB/Z 140Heat treatment process of aviation superalloyQ/GYB 05067-GH2907Alloy cold rolled sheet and strip Q/GYB 05069 HGH2907 alloy cold drawn wire for welding
Classification	Special alloy steel
Performance	Elastic Low temperature toughness High temperature strength Fatigue resistance
Explain	GH2907 superalloy superalloy is a Fe-Ni-Co base precipitation hardening low expansion deformation superalloy, which is comprehensively strengthened by adding niobium, titanium, silicon and trace boron toxin. The alloy has high strength, low expansion coefficient, good cold and hot fatigue resistance and almost constant elastic modulus below 650 ℃. Curie point is between 400 ℃ and 450 ℃. The expansion coefficient of the alloy below the Curie point is basically unchanged. Suitable for making various aviation and aerospace engine rings and casings used below 650 ℃; GH2907 superalloy has been used to make the rear casing, bearing ring, heat insulation ring, combustion chamber sealing ring, honeycomb seat, turbine outer ring and other parts of the high pressure compressor of the aero-engine, and is in good use. Because the alloy does not contain chromium and aluminum. This standard is applicable to deformed superalloys, cast superalloys (equiaxed cast superalloys, directionally solidified columnar superalloys and single crystal superalloys), high-temperature alloy wires for welding, powder metallurgy superalloys, dispersion strengthened superalloys and intermetallic compound high-temperature materials.
Density	7.93g/cm³

Chemical composition:%

Element	Fe	C	Si	Mn	P	S	Cr	Ni	Cu	Ti	Nb	B	Co	Ai
Min.	Allowance	-	0.07	-	-	-	-	35	-	1.3	4.3		12	-
Max.	Allowance	0.06	0.35	1	0.015	0.015	1	40	0.5	1.8	5.2	0.012	16	0.2

Note: The above information is for reference only. Some elements in different standards and specifications may be different.

The information of the above materials is rough description, and any deviation may be used for reference only

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