Inconel 718: This is a nickel-based high-temperature alloy, mainly composed of nickel (Ni), chromium (Cr), iron (Fe) and other elements, of which the nickel content is usually between 50% and 55%, and the chromium content is between 17% and 21%.
316 stainless steel: 316 stainless steel is a molybdenum-containing austenitic stainless steel, whose main components include chromium (Cr), nickel (Ni) and molybdenum (Mo). Compared with 304 stainless steel, 316 stainless steel has stronger corrosion resistance, especially in chlorine-containing environments such as seawater or chemical media.
Inconel 718 Chemical composition
316 stainless steel Chemical composition
High temperature performance:
Inconel 718: It can maintain mechanical stability at temperatures up to 650°C, and has excellent creep resistance and fatigue strength.
316 stainless steel: Although it also has certain high temperature resistance, its upper temperature limit is usually much lower than that of Inconel 718, and its mechanical properties will decrease at high temperatures.
Corrosion resistance:
Inconel 718: It has excellent corrosion resistance and can resist corrosion from a variety of corrosive media including salt spray, wet chlorine and various organic acids.
316 stainless steel: It exhibits good corrosion resistance in chlorine-containing environments, acidic environments and alkaline environments, but its corrosion resistance may be slightly inferior to that of Inconel 718 in some extreme corrosive environments.
Processing performance:
Inconel 718: It has good processing performance, including hot processing and cold processing, and its hardness can be adjusted by heat treatment.
316 stainless steel: It also has good processing performance, is easy to cut, weld and form, and is an ideal material for manufacturing various complex shaped parts.
Application areas Inconel 718: It is widely used in aerospace, petrochemical, nuclear energy and shipbuilding, especially in applications requiring high temperature strength and corrosion resistance, such as jet engine turbine discs, blades and high-pressure compressor components.
316 stainless steel: Mainly used in food processing, medical equipment, chemical equipment, marine engineering and other fields, especially in environments that require strong corrosion resistance, such as seawater treatment equipment, chemical reactors, etc.
