Multi-carbide material manufacture and use

Is formed by grinding medium by the following carbide material, comprising a medium to spherical or bar, the diameter size is between about 0.5 Micron-100mm, wherein the polybasic the substantially is formed by the element and carbon two or more carbides, comprising a carbide wherein the element is or are selected in the catalyst is element. Wherein the medium has high mass; and with hardness and other high toughness.