What is Cubic Boron Nitride or CBN

Boron nitride is a chemically and thermally resistant refractory compound of boron and nitrogen, whichis existing in a variety of crystalline forms. It is known as the second hardest materials after diamond. Compared with Diamond, there is a important advantage of CBN, that it does not chemically erode or wear away in the presence of certain other mterials, including  graphite and other carbide forming elements such as iron, cobalt. During abrasive processing, given its durability, cbn is the first option for the alloy steels. 

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