A. Nickel-based superalloy. The main alloying elements are chromium, tungsten, molybdenum, cobalt, aluminum, titanium, boron, zirconium and so on. Chromium plays the role of harmony, and other elements play the role of reinforcement. It has high strength and gas corrosion resistance at 650 ~ 1000℃. It is a kind of alloy widely used in high temperature alloy and high temperature strength. This respect talent is relatively scarce. Used in the manufacture of aero-engine blades and rocket engines, nuclear reactors, high-temperature components in energy conversion equipment.
B. Nickel-based corrosion resistant alloy. The main alloying elements are copper, chromium and molybdenum. With good comprehensive performance, can resist all kinds of acid corrosion and stress corrosion. Early application is nickel copper alloy, also known as Monel alloy; In addition, there are nickel-chromium alloy, nickel-molybdenum alloy, nickel-chromium molybdenum alloy and so on. Used to manufacture all kinds of corrosion resistant parts.
C. Nickel based wear resistant alloy. The main alloying elements are chromium, molybdenum and tungsten, with small amounts of niobium, tantalum and indium. In addition to wear resistance, its, corrosion resistance, welding performance. It can be used to manufacture wear-resistant parts, and can also be used as coating material, which can be coated on the surface of other matrix materials through surfacing welding and spraying process.
D. Nickel-based precision alloy. Including nickel - based soft magnetic alloy, nickel - based precision resistance alloy and nickel - based electric - thermal alloy. The commonly used soft magnetic alloy is about 80% nickel glassy alloy, its permeability and initial permeability is high, coercivity is low, is an important iron core material in the electronics industry. The main alloy elements of nickel based precision resistance alloy are chromium, aluminum and copper. This alloy has high resistivity, low temperature coefficient of resistivity and good corrosion resistance, and is used for making resistors. Nickel-based electrothermal alloy is a nickel alloy containing 20% chromium. It has good properties and can be used for a long time at the temperature of 1000 ~ 1100℃.
