GH36

HuaNickel GH36 is a Fe-Cr-Ni-based precipitation-hardening deformed superalloy, which is mainly precipitated strengthened by forming a VC strengthening phase, and the service temperature is less than 650°C. The alloy has good microstructure stability. It has good physical and mechanical properties at 600°C~650°C, and has good cutting performance.

GH36 Chemical composition：

	Fe	C	Cr	Ni	Mo	Nb	V	Si	Mn	S	P	Ti
Min	Bal	0.34	11.5	7	1.1	0.25	1.25	0.3	7.5	≤
Max		0.4	13.5	9	1.4	0.5	1.55	0.8	9.5	0.03	0.035	0.12

GH36 Physical properties：

Density	7.85g/cm³
Melting point	1365℃

Coefficient of linear expansion

θ/℃	20～100	20～200	20～300	20～400
α/(10-6℃-I)	12.23	17.98	19.16	20.66
0/℃	20～500	20～600	20～650	20～700
α/(10~6℃-¹)	21.44	22.49	22.85	23.13

Resilient performance

θ/℃	20	300	400	500
Ed/GPa	203	180	171	162
θ/℃	600	650	700	800
Ed/GPa	153	149	145	141

GH36 Mechanical properties：

Standard number	Variety	heat treatment	Room temperature performance						650℃Long-lasting performance
			Stretch				impact	hardness	σ/MPa	τ/h
			σb/MPa	σp0.2/MPa	δ₅/%	ψ/%	Ak/J	HBS		≥
			≥
GJB 3165A	Hot rolled and forged rods	Standard heat treatment	830	590	15.0	20.0	27.5	311～277	345(375)	100(35)
YB/T 5245		Standard heat treatment	833	588	15.0	20.0	34	311～277	343	100
GB/T 14994	Cold drawer	Standard heat treatment	833	588	15.0	20.0	34	311～2772	343(373)	100(35)
GJB 2611A			835	590	15	20	27	311～276	370(345)	35(100)
GJB 3167A YB/T 5249	Heading with silk	Solution treatment	—	——	—		—	≤269	—	—
		Standard heat treatment	835～833	580～588	15.0	20.0		311～277	343	100
GB/T 14997	Round billet	Standard heat treatment	833	588	15.0	20.0	29	311～277	373(343)	35(100)
GJB 3782A			835	590	15.0	20.0	23.5	311～277	373(345)	35(100)
GJB 5280	Disc forgings	Standard heat treatment	835	590	15.0	20.0	19	310～277	372(313)	35(100)
GB 14998	Ring blanks	Standard heat treatment	833	588	15.0	20.0	29	311～277	373(343)	35(100)
GJB 3020A GJB 5301			835	590	15.0	20.0	23.5	311～277	370(345)	35(100)

GH36 Alloy properties：

GH36 alloy is in the superalloy series, which has a large output and is widely used. The alloy has a high coefficient of linear expansion, poor oxidation resistance and corrosion resistance, especially in the salt spray atmosphere and normal temperature and high temperature cycles, which can lead to the reduction of low-cycle fatigue performance. The alloy has a notched long-lasting sensitivity at 600°C~650°C.

GH36 Uses of alloys：

HuaNickel GH36 alloy has been used in the manufacture of aero engine turbine discs, bearing rings and fasteners and other parts; Alloys can also be used to make turbo turbine blades and other high-temperature components for diesel engines, steam turbines.

GH36 Process performance：

Welding process:

Smelting process	sampling/mm	Heat treatment	Statute of limitations		0/℃	Kc/(MN/m³/²)
			0/℃	t/h
Electric arc furnaces	d960×125Disc rim chord	1140℃×165min/WQ +670℃×14h+780℃×18h/AC	——		20	77.5
Electric arc furnace + electroslag	90Billet	1140℃×80min/WQ +670℃×14h+780℃×16h/AC		——		95.2
			650	800		89.3
				1600		87.4

Heat treatment process of parts: The heat treatment system of medium-sized turbine disc and bearing ring is 1140°C±10°C×80min/WQ+660°C±10°C×16h, and then the temperature is raised to (770~800)°C×16h/AC. When the w(C) in the alloy is ≤ 0.36%, the second stage aging is carried out at 770°C~780°C; When w(C) >0.36%, the second stage aging is carried out at 790°C~800°C.

Relevant standards：

GB/T14992、GB/T  14994、GB/T  14997 、GB/T  14998  、GJB 2611A  、GJB 2612A 、GJB 3020A 、GJB 3165A、GJB 3167A  、GJB 3782A 、GJB 5280 、GJB 5301  、YB/T 5245、YB/T 5249、HB/Z140