Inconel 718 Bolts

Inconel718 is a precipitation strengthened nickel-based high-temperature high-strength alloy

It has good comprehensive properties in the temperature range of -253 ~ 700 ° C, and the yield strength below 650 ° C ranks first in the deformed superalloy, and has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, and good processing performance. , welding performance and long-term organizational stability, and can manufacture various parts with complex shapes. In the aerospace, nuclear energy, and petroleum industries, it has been widely used in the above temperature range.

 

Another feature of the alloy is that the structure of the alloy is particularly sensitive to the thermal processing process. By mastering the phase precipitation and dissolution laws in the alloy and the relationship between the structure, process and performance, we can formulate reasonable and feasible process regulations for different use requirements. A variety of parts can be obtained to meet different strength levels and usage requirements.

 

Similar Grades

China: GH4169

Germany: W.Nr.2.4668

France: Nc19FeNb

 

Typical values(Weight %)

Grade	Cr	Ni	C	Nb	P	S	Fe
					≤
A	17.0-21.0	50.0-55.0	0.08	4.75-5.50	0.015		Remain
B	17.0-21.0	50.0-55.0	0.02-0.06	5.00-5.50	0.015		Remain
C	17.0-21.0	50.0-55.0	0.02-0.06	5.00-5.50	0.015		Remain

 

Mechanical properties (high quality bar)

Specification	θ/℃	σЬ/ MPa	σ0.2/MPa	δ5 /%	HBS
≤125	20	1030	1280	12	≥346
	650	860	1000	12	-
126-200	20	1030	1240	6	-
	650	860	965	6	-
>200	20	1020	1230	6	-
	650	800	900	6	-

 

Inconel718 Corrosion Resistance

No matter in high temperature or low temperature environment, it has excellent resistance to stress corrosion cracking and pitting corrosion, especially in high temperature oxidation resistance.

 

Application Field

• Aeroengine components

• Various elastic elements and grids in the nuclear energy industry

• Parts for petroleum applications

• Chemical industry

• Nuclear engineering

 

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