GH33B 

HuaNickel GH33B is a Ni-Cr-based precipitation hardening deformed superalloy, and GH33B alloy is a modified alloy after adding an appropriate amount of magnesium and zirconium on the basis of GH4133 alloy. The alloy has good comprehensive mechanical properties and high yield strength at a service temperature of less than 750 °C. It has good antioxidant properties, stable structure and uniform and fine grains; Easy to form by hot work. GH33B compounds greatly improve long-lasting strength and plasticity.

GH33B Chemical composition：

	Ni	Cr	AI	Ti	Nb	Mg	Zr	C	Fe	B	Ce	Mn	Si	P
Min	Bal	19	0.75	2.5	1.3	0.001	0.01	≤
Max		22	1.15	3	1.7	0.01	0.1	0.06	1.5	0.01	0.01	0.35	0.65	0.015

GH33B Physical properties：

Density

8.21g/cm³

Thermal conductivity

θ/℃	α/[W/(m·℃)]	θ/℃	α/[W/(m·℃)]
100	12.1	600	23.7
200	14.2	700	26.2
300	16.7	800
400	18.8	900

Resistivity

θ/℃		100	200	300	400	500
p/(10-⁶Ω·m)	GH4133	1.27	1.28	1.29	1.30	1.31
	GH33B	1.23	1.25	1.26	1.27	1.28
θ/℃		600	700	800	900
p/(10~⁶Ω·m)	GH4133	1.32	1.31	1.29	1.27
	GH33B	1.29	1.29

Coefficient of linear expansion

θ/℃		20～100	20～200	20～300	20～400	20～500
α/(10-6℃-I)	GH4133	12.0	12.9	13.5	13.9	14.6
	GH33B	11.6	12.3	12.4	13.3	13.8
θ/℃		20～600	20～700	20～800	20～900	—
α/(10-6℃-I)	GH4133	15.0	15.8	16.6	17.6
	GH33B	14.4	15.1	15.7	16.5

Resilient performance

θ/℃		20	100	200	300	400	500	600	700	800	900
Ed/GPa	GH4133	223	219	214	207	203	197	190	183	176	164
	GH33B	224	219	215	211	207	203	198	189	182	175
E/GPa	GH33B	215			182	173	163	163	159	141	—
G/GPa	GH4133	82	80	78	77	75	73	70	68	63	58
	GH33BD	84			77		—	69	—
μ°	GH4133	0.36	0.37	0.34	0.35	0.35	0.37	0.35	0.35	0.39	0.42

 

GH33B Mechanical properties：

Standard number	Variety	Heat treatment	Tensile properties					Room temperature performance		Long-lasting performance
			θ/℃	σb/MPa	σp0.2/MPa	δ₅/%	ψ/%	Aku/J	HBS	θ/℃	σ/MPa	τ/h
				≥								≥
GB/T 14997 GJB 5280	GH4133  Disc forgings	Standard heat treatment	20	1060	735	16	18	31	352～262	650	635	100
			650	870		16	20	—		750	343	50
											294	100
GJB 52802	GH33B Disc forgings		20	1060	735	16	18	31	352～262	750	392	50
											343	70
GJB 3782A	GH4133  Forged round cakes		20	1060	735	16	18	31	363～285	750	295	100
											345	50

GH33B Alloy properties：

As a new type of alloy, GH33B alloy inherits the advantages of HuaNickel GH4133 alloy and successfully eliminates the notch sensitivity of the material below 750°C by adding an appropriate amount of magnesium and zirconium microalloying, doubling the life of the material, especially improving the lasting strength and plasticity.

GH33B Uses of alloys：

GH33B alloys have been used to make many types of aero engine turbine disks and load-bearing rings and other important components.

GH33B Process performance：

Heat treatment: solution treatment is usually carried out at 1150-1180 °C, and the aging treatment is carried out after solution treatment, so that the alloy can obtain better mechanical properties and oxidation resistance by controlling the aging temperature and time.

Relevant standards：

GB/T14992 、GB/T 14997 、GJB 1953A   、GJB3165A  、GJB 3782A  、GJB 5280、GJB 5301、HB/Z 140 、YB4093 GH33B