Inconel718 contains niobium, molybdenum precipitation hardening nickel chromium iron alloy, at 700 DEG C with high strength, good toughness and in high and low temperature environment has corrosion resistance. The supply state can be a solid solution treatment or a precipitation hardening state.
Corresponding grades:GH4169、GH169(China), NC19FeNB(France), W.Nr.2.4668、NiCr19Fe19Nb5、Mo3(Germany), NA 51(England)
Characteristic of Inconel718
2)Tensile strength, fatigue strength, creep strength and fracture strength at 700 C
3)High oxidation resistance at 1000
4)Stable chemical properties at low temperature
5)Good welding performance
Application area of Inconel718
Because of the high temperature strength and excellent corrosion resistance, easy processing of the 700 degree, it can be widely used in a variety of high requirements of the occasion.
2)Liquid fuel rocket
Inconel718 alloy is easy to be processed in all kinds of industrial processes.
The workpiece must be cleaned on the surface before heating and the heating process, and keep the surface clean. If the heating environment contains sulfur, phosphorus, lead or other low melting point metal, Inconel718 alloy will become brittle. Heating of the furnace is better to have more accurate temperature control ability, the gas stove must for neutral or weak alkaline, should avoid furnace gas components in oxidation and reduction in volatility.
The appropriate heat treatment temperature of Inconel718 alloy is 1120-900, which can be quenched by water or other fast cooling methods, and it should be annealed in time to ensure the best performance. In hot working, the material should be heated to the upper limit of the processing temperature, in order to ensure the plastic deformation, the final processing temperature of 20% is not less than 960.
Cold processing should be carried out after solid solution treatment, the rate of Inconel718 is greater than that of austenitic stainless steel, so the processing equipment should be adjusted accordingly, and in the process of cold processing should be intermediate annealing process.
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