This very corrosion resistant set of alloys contains at least 11 percent Chromium by weight. Popular due to its high strength to density ratio, aluminum is also corrosion resistant, and easily formed. Typical applications include costume jewelry, cartridge casings, radiators, musical instruments, coins, springs, diaphragms, saltwater piping, battery clamps, and bearings. Zinc also has good corrosion resistance and sound damping properties. Magnesium has the lowest density of all of the structural metals, so it often appears in aircraft components.
Nickel alloys are corrosion resistant in many environments, especially alkaline rich situations.
It is often used for coating metals less resistant to corrosion, and as an alloying component. Pumps, valves, other components in contact with corrosives, ducts in nuclear power systems, fans, ovens, doctor blades, dentistry, medical implants, and cryogenic applications. Thermoplastics can repeatedly be changed from a solid state to a maleable state with the application of heat. They soften when heated, eventually liquify, and solidfy once more upoon cooling. They are relatively ductile.