CBN powder abrasive 1.Dark brown CBN, irregular monocrystalline with sharp edge, tough, 2.Used in vitrified bond, metal bond CBN ... powder abrasive 1. CBN Feature: Dark brown, irregular monocrystalline with sharp edge, tough, high thermal stability. Used in vitrified bond, metal ... Angular shapes in each grain well suited for applications with ferrous materials, high temp. Grinding of iron based metals ...