GH33A

HuaNickel GH33Ais a Ni-Cr-based precipitation-hardening deformed superalloy, which has good comprehensive mechanical properties and high yield strength. It has good antioxidant properties, stable structure and uniform and fine grains; Easy to form by hot work.

GH33AChemical composition：

	Ni	Cr	AI	Ti	Nb	C	Fe	B	Ce	Mn	Si	P	S	Cu
Min	Bal	19	0.7	2.5	1.15	≤
Max		22	1.2	3	1.65	0.07	1.5	0.01	0.01	0.35	0.65	0.015	0.007	0.07

GH33APhysical properties：

Density

8.21g/cm³

Resistivity

θ/℃		100	200	300	400	500
p/(10-⁶Ω·m)	GH4133	1.27	1.28	1.29	1.30	1.31
	GH4133B	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
	GH4133B	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
	GH4133B	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
	GH4133B	14.4	15.1	15.7	16.5

GH33AMechanical 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
				≥								≥
GIB 1953A4	GH4133B Hot rolled rods	Standard heat treatment	750	750	Measured	12	15.0	31	352～262	750	345	50
			20	1060	735	16	18.0			750	392	50
GJB 3165A	GH4133B Hot rolled (forged) rods	Standard heat treatment	20	1060	735	16	18.0	31	352～262	750	392	50
GJB 5301	GH33ARings	Standard heat treatment	20	1060	735	16	18	31	363～285	750	345	50
											295	100
	GH4133B Rings		20	1060	735	16	18	31	352～262	750	392	50

GH33AAlloy properties：

After the long-term aging of the alloy above 700°C, the η phase is precipitated on the grain boundary, and the number of  phases in the grain boundary and intragranular increases significantly after 3000h, and a large cellular population of η phase appears. The durability of the alloy above 700°C is low and notch-sensitive.

GH33AUses of alloys：

HuaNickel GH33Aalloy has been used in the manufacture of many types of aero engine turbine disks and bearing rings and other important components, and is also used in the manufacture of high-temperature bolts and tie rods for aircraft engines and industrial steam turbines.

GH33AProcess performance：

Cutting and grinding performance: when turning, using YA6 or YW2 tool rough turning, turning GH33Aand GH4133B turbine disc and turning GH4033 turbine disc comparison, the turning speed is reduced by about double, and the tool wear is faster;

Drilling, reaming, milling using W18Cr4V cutter, processing GH33Aand GH4133B turbine disc and processing GH4033 turbine disc compared with the processing of GH4033 turbine disk, the turning speed is reduced by about double, the number of grinding processing is reduced by 1~2 times;

The broaching speed of the broaching GH4033 turbine disc is (3~4)m/min, while the broaching speed of the broaching GH33Aand GH4133B turbine disc can only be less than 1.5m/min, and the durability of the broach is reduced by 2~3 times.

Relevant standards：

GB/T14997、GJB 1953A、GJB3165A 、GJB 3782A 、GJB 5280、GJB 5301 、HB/Z 140、YB4093 、GH4133B