GH500

HuaNickel GH500 is a nickel-based superalloy with excellent high-temperature strength, good thermal stability and oxidation resistance. This alloy has good resistance to hot corrosion at high temperatures, making it an ideal material choice for aerospace, industrial gas turbines, and other demanding applications.

GH500 Chemical composition：

	Ni	Cr	Co	Mo	AI	Ti	B	C	Fe	P	Zr	Mn	Si	Cu
Min	Bal	18	15	3	2.75	2.75	0.003	≤
Max		20	20	5	3.25	3.25	0.008	0.12	4	0.015	0.06	0.75	0.75	0.1

GH500 Physical properties：

Density	8.05 g/cm³
Melting point	1288~1343℃
Magnetic properties	not

Coefficient of linear expansion

θ/℃	20～100	20～200	20～300	20～400
α/(10~6℃-I)	12.9	13.1	13.3	13.7
θ/℃	20～500	20～600	20～700	20～800
α/(10-5℃-1)	14.2	14.5	15.0	15.6

GH500 Mechanical properties：

Standard number	Variety	Heat treatment	Room temperature performance					Smooth and notchedLong-lasting performance
			σb/MPa	σp0.2/MPa	δ₅/%	ψ/%	HV	θ/℃	σ/MPa	τ/h	δ₅/%
辽新7-0022	Hot rolled and forged bars for load-bearing rotating parts	Standard heat treatment	≥1100	≥750	≥10.0	Measured	≥350	870	215	τ≥50	≥9.0
								750	490	τh≥30	——

GH500 Alloy properties：

GH500 alloy is welded by argon arc welding method, using this alloy welding wire, and the weld strength is lower than that of the base material after heat treatment. In order to improve the corrosion resistance of the turbine blades, the surface of the part can be protected by infiltration Al. After the alloy is aged at high temperature for a long time or under high temperature stress, a small amount of σ phase is precipitated.

Corrosion resistance: HuaNickel GH500 alloy has excellent corrosion resistance and is able to resist oxidation, sulfidation and corrosive gases.

Thermal stability: GH500 alloy shows excellent thermal stability in long-term use, and can maintain performance even in high-temperature environments.

GH500 Uses of alloys：

The alloy has been used in the manufacture of aero engine I and II turbine discs, free turbine discs, labyrinth shafts and caster sealing rings and other parts, and is in good batch production and use. Similar grades are widely used in foreign countries, mainly used to manufacture turbine blades with an operating temperature of less than 750 °C for aero engines, as well as gas turbine blades.

GH500 Process performance：

Welding process: The alloy can be welded by argon arc welding method, using the same material welding wire, and the weld strength is lower than that of the matrix material after heat treatment.

Cutting: The alloy is generally machined after standard heat treatment, and the low-speed and small feed amount are used; For drilling and turning, it should be carried out in a solid solution state, and polishing should be carried out after aging.

Relevant standards：

GB/T14992 、HB/Z  140  、辽新7-0022  GH500