GH135

HuaNickel GH135 is a Fe-Ni-Cr-based precipitation-hardening deformed superalloy with a service temperature of less than 700°C. Elements such as aluminum and titanium are added to the alloy to form an aging precipitation strengthening phase, and chromium, tungsten and molybdenum are added to strengthen the solution. The alloy has the characteristics of good fatigue resistance at low cycle, yield strength increases with temperature increase at 700°C, and good plasticity in hot working.

GH135 Chemical composition：

	Fe	Cr	Ni	W	Mo	AI	Ti	C	B	Ce	Mn	Si	P	S
Min	Bal	14	33	1.7	1.7	2	2.1
Max		16	36	2.2	2.2	2.8	2.5	0.08	0.015	0.03	0.4	0.5	0.02	0.02

GH135 Physical properties：

Density

7.92g/cm³

Coefficient of expansion

θ/℃	20～100	20～200	20～300	20～400
α/(10~5℃-I)	15.0	15.2	15.5	15.7
θ/℃	20～500	20～600	20～700	20～800
α/(10-6℃-1)	15.9	16.2	16.5	17.6

Thermal conductivity

θ/℃	100	200	300	400	500
α/[W/(m·℃)	10.9	13.0	14.6	16.3	18.0
θ/℃	600	700	800	900
α/[W/(m·℃)]	19.7	21.8	23.0	24.3

Resilient performance

θ/℃	20	100	200	300	400	500
Ed/GPa	200	196	189	183	176	169
G/GPa	79.4	76.4	72.5	70.6	66.6	62.7
θ/℃	600	700	750	800	900	—
Ed/GPa	165	150	155	147	134
G/GPa	60.8	58.8	57.8	56.8

GH135 Mechanical properties：

Standard number	Variety	State	Room temperature performance						Long-lasting performance
			σb/MPa	σpo.2/MPa	δ₅/%	ψ/%	aku/kJ/m²	HBS	θ/℃	σ/MPa	τ/h
			≥								≥
GB/T14997 GJB3020	Round cake ring blank	Standard heat treatment	880	590	13	16	290	321～255	750	345	50
			805	590	10	13	290	321～255		295	100
GJB5301	Rings	Standard heat treatment	805	590	10	13	290	321～255	750	345	50
										295	100
Standard number	variety	State	Tensile properties at 700°C				HBS		Long-lasting performance
			σb/MPa	σpo.2/MPa	δ₅/%	ψ/%			θ/℃	σ/MPa	τ/h
			≥								≥
YB/T5245	Rods	Standard heat treatment	784		15	20	352～277		700	431	60
										412	80

GH135 Alloy properties：

GH135 alloy can save w(Ni)41% and w(Cr) 5.5% compared with nickel-based alloys for similar purposes. After long-term aging above 800°C, the alloy has needle-like σ phase precipitation in the crystal, and Laves phase precipitation in the grain boundary.

GH135 Uses of alloys：

GH135 alloy has been used to make two types of aero engine I and II turbine discs, and two types of fighters are equipped for use in the field. China’s first 3,000-horsepower gas turbine flame cylinder made of alloy plates was installed on the “Long March 1” locomotive and passed the test of more than 300 hours of operation. The alloy can also be made of hot stamping dies working at 750°C~850°C, such as forging hammer anvils and hydraulic press anvils or insert anvils, hot stamping dies, etc.

GH135 Process performance：

Welding process:HuaNickel  GH135 alloy can be connected by automatic argon arc welding, contact welding, manual argon arc welding and other methods.

Relevant standards：

GB/T 14992 、GB/T14997、GJB 3020A  、GJB 5301 、YB/T5245 、YB/T 5247