EMT 812, a medium-coarse grade, has the highest shock resistance/toughness and the lowest wear resistance of the Extramet EMT product line. EMT 812 is a homogenous mixture of tungsten carbide grains in a tough cobalt binder matrix. The carbide grains are fused into a solid matrix of cobalt metals. The metal carbide’s grains are “cemented” in the binder metal’s matrix. Information provided by Extramet |