High-performance alloys are typically the basis of Incoloy washers. The high-performance alloys are composed primarily of nickel, iron, and chromium in order to provide outstanding protection against oxidation, carburization, and corrosion. Nickel is included in the microstructure of Incoloy washers in order to confer strength and resistance to corrosion. Chromium also protects against oxidation. As an addition, iron serves as a balancing agent. Most Incoloy alloys also add titanium and aluminum in some combination, or molybdenum in others, depending upon the grade of the particular alloy. Incoloy washers display a combination of higher tensile strength, greater ductility, and greater thermal stability than steel, and resistance to environmental stress-corrosion, thermal fatigue, and ongoing deformation; making them suitable for high-temperature and other extreme industrial applications.
