Properties, types and uses of nickel-based alloys

Characteristics, types and uses of nickel-based alloys
Nickel-based alloys refer to a type of alloy with high strength and certain anti-oxidation and corrosion resistance at high temperatures of 650-1000℃. According to the main properties, they are further divided into nickel-based heat-resistant alloys, nickel-based corrosion-resistant alloys, nickel-based wear-resistant alloys, nickel-based precision alloys and nickel-based shape memory alloys. According to the different matrixes, high-temperature alloys are divided into: iron-based high-temperature alloys, nickel-based high-temperature alloys and cobalt-based high-temperature alloys. Among them, nickel-based high-temperature alloys are referred to as nickel-based alloys.
Representative materials of nickel-based alloys are:

1. Incoloy alloy, such as Incoloy800, the main components are; 32Ni-21Cr-Ti,Al; belongs to heat-resistant alloy;
2. Inconel alloy, such as Inconel600, the main components are; 73Ni-15Cr-Ti,Al; belongs to heat-resistant alloy;
3. Hastelloy alloy, that is, Hastelloy alloy, such as Hastelloy C-276, the main components are; 56Ni-16Cr-16Mo-4W; belongs to corrosion-resistant alloy;
4. Monel alloy, that is, Monel alloy, such as Monel 400, the main components are; 65Ni-34Cu; belongs to corrosion-resistant alloy;
   Nickel-based alloys are used in many fields, such as:

1. Ocean: marine structures in marine environment, seawater desalination, seawater aquaculture, seawater heat exchange, etc.
2. Environmental protection field: flue gas desulfurization equipment for thermal power generation, wastewater treatment, etc.
3. Energy field: atomic power generation, comprehensive utilization of coal, tidal power generation, etc.
4. Petrochemical field: oil refining, chemical and chemical equipment, etc.
5. Food field: salt making, soy sauce brewing, etc. In the above many fields, ordinary stainless steel 304 is not competent. In these special fields, special stainless steel is indispensable and irreplaceable. In recent years, with the rapid development of the economy and the continuous improvement of the level of the industrial field, more and more projects require higher-grade stainless steel. With the growth of demand for nickel-based alloys in various industries. In 2011, the market size of nickel-based alloys in my country reached 23.07 billion yuan, a year-on-year growth rate of 19.47%. Therefore, the level of industry development is in a steady upward trend.