The process of rubbing, grinding, or wearing away by friction. Abrasive A substance capable of grinding away another material. Accordion Reed Steel Hardened, tempered, polished and blued or yellow flat steel with dressed edges. Carbon content about 1.00.
Material has to possess good flatness, uniform hardness and high elasticity.
Acid Steel Steel melted in a furnace with an acid bottom and lining and under a slag containing an excess of an acid substance such as silica. The changing of the passive surface of a metal to a chemically active state. Contrast with passivation. Age Hardening Hardening by aging, usually after rapid cooling or cold working. The term as applied to soft, or low carbon steels, relates to a wide variety of commercially important, slow, gradual changes that take place in properties of steels after the final treatment.