TECHALLOY A (80-20) is a nickel-chromium electrical resistance alloy for operating temperatures up to 2150 F. It is non-magnetic, highly corrosion resistance, and has a lower temperature coefficient of resistance than other alloys for heater elements. This datasheet provides information on composition, physical properties, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Ni-220. Producer or source: Techalloy Company Inc..