Including nickel-based soft magnetic alloys, nickel-based precision resistance alloys and nickel-based electric heating alloys. The most commonly used soft magnetic alloy is Permalloy with about 80% nickel. Its maximum permeability and initial permeability are high, and the coercive force is low. It is an important core material in the electronics industry. The main alloying elements of nickel-based precision resistance alloys are chromium, aluminum, and copper. This alloy has high resistivity, low resistivity temperature coefficient and good corrosion resistance, and is used to make resistors. Nickel-based electric heating alloy is a nickel alloy with 20% chromium. It has good oxidation and corrosion resistance and can be used for a long time at a temperature of 1000 to 1100 ℃.