DZ417G

HuaNickel  DZ417G is a nickel-based precipitation-hardening directional solidified columnar crystal superalloy, which is a low-Density alloy developed on the basis of K417G alloy, and the service temperature is below 980°C. The alloy has high medium temperature strength, good creep resistance, high plasticity, stable structure and low cost. The main products are long-life gas turbine rotor blades, guide vanes and other high-temperature parts.

DZ417G chemical composition：

	Ni	C	Cr	Co	Mo	AI	Ti	V	B	Fe	Mn	Si	P	S	Pb
Min	Bal	0.13	8.5	9	2.5	4.8	4.1	0.6	0.12	≤
Max		0.22	9.5	11	3.5	5.7	4.7	0.9	0.024	0.5	0.2	0.2	0.005	0.008	0.0005

DZ417GPhysical properties：

Density	7.84 g/cm³
Melting point	1286℃~1342℃
Magnetic properties	not

Specific heat capacity

θ/℃	200	250	300	350	400	450	500	550	600	650
c/[J/(kg·℃)]	468	477	485	493	502	514	527	544	560	573
θ/℃	700	750	800	850	900	950	1000	1050	1100
c/[J/(kg·℃)]	594	611	631	652	673	698	732	749	774

Coefficient of linear expansion

θ/℃	20～100	20～200	20～300	20～400	20～500
α/(10-6℃-¹)	12.5	12.9	13.0	13.1	13.3
θ/℃	20～600	20～700	20～800	20～900	20～1000
α/(10-6℃-1)	13.5	13.7	14.0	14.3	14.7

DZ417GMechanical properties：

Standard number	variety	Sampling	heat treatment	Tensile properties				Long-lasting performance
				θ/℃	σb/MPa	δ₅/%	ψ/%	θ/℃	σ/MPa	τ/h
GJB 5512.2 HB 7762	Master alloy	Directional coagulation test rodsLongitudinal	standard  heat treatment	900	≥700	≥6	≥8	760	725	≥48
								980	216	≥24
Q/14B-SYF2004	Blade castings			900	≥700	≥6	≥8	760	725	≥48
								980	216	≥24

DZ417GAlloy properties：

DZ417G is a patented alloy with independent intellectual property rights (Patent No. ZL95110023.8). It has been applied to the production of aero engine gas turbine rotor blades and guide vanes, as well as advanced aero engine low-pressure I and II stage directional solidification turbine blades, which have been mass-produced.

DZ417GUses of alloys：

HuaNickel DZ417G alloy does not precipitate σ phase after long-term aging of 800°C~900°C for 5000h~10000h, and the structure is stable.

DZ417GApplication field process performance：

Parts heat treatment: notBal blades should be carried out under vacuum or protective atmosphere, heat treatment specification is: 1220°C×2h/ argon cooled + 980°C×16h/ argon cooled.

Relevant standards：

GB/T14992  、GJB 5512.2  、HB 7762 、HB/Z140  、Q/14B-SYF2004  DZ417G