nickel chromium alloy is a superalloy that's known for its corrosion resistance and high-temperature performance. It can be used in applications that need a material to withstand extremes of temperature and corroding environments, including oil, chemical and mining industries.
Nickel is a relatively soft metal that will easily alloy with other metals such as copper, iron and chromium. This means that it can be combined with other elements to produce a wide range of alloys with unique properties such as enhanced corrosion or oxidation resistance, improved high-temperature performance and lower coefficients of thermal expansion.
NiCr alloys are popular for their high corrosion resistance, high-temperature strength and electrical resistivity. They are widely used in heating elements such as toasters and other electrical resistance heaters, nichrome wire and other products that need a high-temperature or low electrical resistivity.
A wide range of nickel chromium alloys are available, with different alloy grades for specific applications. Some are suitable for wrought and cast parts that are exposed to hot oxidation or a range of hot corrosion attacks, including fuel ashes, sulphates and alkali metal salts.
Alloy C-276 (N10276) is a well-known nickel chromium alloy that provides exceptional resistance to reducing acids such as hydrochloric and sulphuric. It also has good resistance to aqueous solutions of chlorides and alkali metals such as acetic acid.
Another alloy that is used for applications where a combination of high corrosion resistance and good ductility is required is Alloy X. It offers excellent oxidation resistance and good ductility after long term exposure to temperatures from 1200 to 1800 deg F.