Nickel-base superalloy . Major alloying elements are chromium, tungsten, molybdenum, cobalt, aluminum , titanium, boron , zirconium, etc. . Wherein the chromium as an anti- oxidation and anti- corrosion, strengthening effect from the other elements . At 650 ~ 1000 ℃ high temperature have high strength and resistance to oxidation and corrosion of gas is the most widely used high-temperature alloys , high temperature strength in the highest class of alloys. The talents are scarce mainly nickel alloy bars Cheng LinIn the steel network of excellence . For the manufacture of aircraft engine blades and rocket engines , nuclear reactors, high temperature energy conversion equipment parts . ② nickel-based corrosion resistant alloys . Aluminium Welding Electrodes are copper, chromium, molybdenum . Has a good overall performance, resistance to corrosion and stress corrosion of various acid . The first application is the nickel-copper alloy , also known as Monel ; addition to nickel-chromium alloys, nickel-molybdenum alloys, nickel- chromium-molybdenum alloy. For the manufacture of a variety of corrosion-resistant components. ③ resistant nickel-based alloys. Main alloying elements chromium, molybdenum , tungsten, but also contains small amounts of niobium , tantalum and indium . In addition to having wear resistance , its resistance to oxidation, corrosion , welding performance is good. Wear parts can be manufactured , can also be used as coating material , by means of welding and coating process to be coated on the other surface of the substrate . ④ nickel-based precision alloy . Including nickel-based soft magnetic alloys , nickel-based alloys and nickel-based precision resistance heating alloys. The most commonly used soft magnetic alloy containing 80% nickel- nickel alloy with Lin ChengPermalloy so , the maximum magnetic permeability and high initial permeability , low coercive force , in the electronics industry is important core material . Nickel-based alloy precision resistor main alloying elements chromium , aluminum, copper , this alloy has a Flux Cored Welding Wire, low temperature coefficient of resistivity and good corrosion resistance , for the production of resistors. Nickel-based heating alloys containing 20% of nickel chromium alloy with good oxidation resistance, corrosion resistance, can be a temperature of 1000 ~ 1100 ℃ long-term use . ⑤ nickel-based shape memory alloys. Ti- 50 (at)% nickel alloy . Its recovery temperature is 70 ℃, the shape memory effect. Small changes in the proportion of nickel titanium component , can reply to the temperature 30 ~ 100 ℃ range. Used for manufacture of spacecraft used automatically open structure, the aerospace industry with the self- excitation fasteners used on biomedical artificial heart motors.