Profile: Ajax Electric Co. manufactures industrial heating equipment. We offer heat-treating high-speed steel drill bits, austempering chisels, heat-treating hand tools and austempering springs. Our furnace typical applications include annealing, nitriding, melting, tempering, hardening, brazing and galvanizing. Our HX furnaces are equipped with either resistance or silicon carbide heating elements, mounted externally to either a square or round metal pot holding molten media.