GH2150

HuaNickel GH2150 is a Fe-Ni-Cr-based precipitation-hardened deformed superalloy. The alloy is strengthened by adding chromium, tungsten and molybdenum, adding titanium, aluminum and niobium to form an aging strengthening phase, and adding trace amounts of boron, zirconium and cerium to purify and strengthen the grain boundaries. The alloy has high strength, good plasticity, low expansion coefficient, and stable structure for long-term use; The alloy has good hot-working plasticity and satisfactory welding, cold forming and cutting performance.

GH2150 Chemical composition：

	Fe	Cr	Ni	W	Mo	AI	Ti	Nb	C	B	Zr	Ce	Mn	Si	P
Min	Bal	14	45	2.5	4.5	0.8	1.8	0.9	≤
Max		16	50	3.5	6	1.3	2.4	1.4	0.08	0.01	0.06	0.02	0.4	0.4	0.015

GH2150 Physical properties：

Density	8.26 g/cm3
Melting point	1320℃~1365℃

Coefficient of linear expansion

θ/℃	20～100	20～200	20～300	20～400	20～500
α/(10-6℃-1)	12.5	12.8	13.3	13.9	14.3
θ/℃	20～600	20～700	20～800	20～900	20～1000
α/(10-6℃-I)	14.8	15.3	15.8	16.9	17.8

Resistivity

θ/℃	20	100	200	300	400
c/[J/(kg·℃)]	523	539	561	581	605
θ/℃	500	600	700	800	一
c/[J/(kg·℃)]	627	649	671	693

Resilient performance

θ/℃	20～100	20～200	20～300	20～400	20～500
α/(10-6℃-1)	12.5	12.8	13.3	13.9	14.3
θ/℃	20～600	20～700	20～800	20～900	20～1000
α/(10-6℃-I)	14.8	15.3	15.8	16.9	17.8

GH2150 Mechanical properties：

Standard number	Variety	heat treatment	θ/℃	Tensile properties				Long-lasting performance①			Aku/J	HBW
				σb/MPa	σpo.2/MPa	δ₅/%	ψ/%	σ/MPa	τ/h	δ₅/%
				≥					≥
GJB 1952A	Cold-rolled sheet	Delivery status	20	≤1100		30
		Standard heat treatment	700	800		8		490	30	4
GIB 3165A	Hot rolled and Forged rods	Standard heat treatmentb	20	1030		15	20					375～277
			700	800		8	12	490	30	4		—
GJB 3020A GJB 5301	The ring is broken Rings	Standard heat treatment	20	1030	650	15	20	—	—		30	375～277
			700	800		8	12	490	30	4		一

GH2150 Alloy properties：

When GH2150 alloy is used at more than 800°C, the precipitation of μ phase and γ’ phase aggregate and grow, which will lead to the degradation of the mechanical properties of the alloy.

GH2150 Uses of alloys：

GH2150 alloy is used to manufacture high-temperature parts such as aero engine combustion jackets and mounting edges, and is well produced and used. Similar alloys are used in foreign countries for parts such as jet engine combustion jackets and turbine blades used below 600 °C, and have been tested for long-term use.

GH2150 Process performance：

Welding process: HuaNickel GH2150 alloy has satisfactory welding process performance, and can be welded by argon arc welding, seam welding and spot welding. Attention should be paid to strengthening the protection during argon arc welding, seam welding and spot welding should use larger welding pressure and softer (i.e., longer rest time) welding specifications, and the surface of the plate should be cleaned by chemical methods. The alloy is welded in a solution state, and the aging treatment is carried out after welding

Surface treatment process: The oxide scale after heat treatment of the parts can be removed by sand blowing or pickling. When removing the oxide scale with pickling, the compound alkali pickling process can be used, and the single pickling solution of sulfuric acid-nitric acid-hydrofluoric acid-water can also be used. The surface to be welded before TIG welding of the parts can be cleaned by mechanical polishing or chemical methods, and the surface to be welded before contact welding should be cleaned by chemical methods.

Relevant standards：

GJB1952A、 GJB 3020A 、GJB3165A、 GJB 5301 、HB5499、HGH150、HGH533 、HB/Z 140HuaNickel