GH4220

GH4220 is an aging hardening alloy based on nickel-chromium-cobalt. A large amount of aluminum and titanium elements are added to the alloy to precipitate a large number of intermetallic compounds（ γ’ The phase content is more than 40%) for precipitation strengthening, adding a large amount of tungsten and molybdenum elements for solid solution strengthening, and adding a small amount of carbon, boron and magnesium elements to strengthen the grain boundary, so as to obtain a comprehensive strengthening effect. This alloy is a high alloyed and high performance hard deformation alloy. Its main product is bar, which is suitable for manufacturing rotating parts such as turbine blades of aero-engine working under 950 ℃. It can be used in aerospace, aviation, military industry, energy and chemical industry; The quality grade shall be rechecked according to the national standard, national military standard, navigation mark, etc;

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Superalloy Series

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Brand	GH4220
Similar brands	GH4220 GH220
Technicalstandard	GJB 1953 —1994《Specification for hot-rolled superalloy bars for aircraft engine rotating parts》 HB 5284—1984 《Specification for hot-rolled GH220 alloy bars for aviation》
Classification	Special alloy steel
Performance	Corrosion resistance
Label	Age-hardening alloy、Nickel base alloy、Special alloy
Explain	GH4220 is an aging hardening alloy based on nickel-chromium-cobalt. A large amount of aluminum and titanium elements are added to the alloy to precipitate a large number of intermetallic compounds（ γ’ The phase content is more than 40%) for precipitation strengthening, adding a large amount of tungsten and molybdenum elements for solid solution strengthening, and adding a small amount of carbon, boron and magnesium elements to strengthen the grain boundary, so as to obtain a comprehensive strengthening effect. This alloy is a high alloyed and high performance hard deformation alloy. Its main product is bar, which is suitable for manufacturing rotating parts such as turbine blades of aero-engine working under 950 ℃. It can be used in aerospace, aviation, military industry, energy and chemical industry; The quality grade shall be rechecked according to the national standard, national military standard, navigation mark, etc;
Density	8.36g/cm³

Chemical composition:%

Element	Ni	Fe	C	Si	Mn	P	S	Cr	Cu	Mo	Ti	W	V	B	Co	Al	Mg
Min.	Allowance	-	-	-	-	-	-	9	-	5	2.2	5	0.25	-	14	3.9	-
Max.	Allowance	3	0.08	0.35	0.5	0.015	0.01	12	0.07	7	2.9	6.5	0.8	0.02	15.5	4.8	0.01

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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