THE TWO MATERIALS WITH THE HIGHEST HARDNESS
DIAMOND
Tetrahedral carbon atoms form Diamond, the hardest material with an hardness of HV 9000. Production techniques allow to realize synthetic diamond grains optimized for the specific application with regular and resistent shapes or more irregular (splinters).
Diamond, during manufacturing, makes heat and oxidizes in presence of oxygen at 800°C: this phenomenon happens in many mechanical processing and, if it is in contact with iron (steel), it causes a quick diamond decomposition. It is the best choice for hard metal, technical ceramics, sapphire, glass, marble/granite, silicon, ferrite and fiberglass.
CBN
CBN (Cubic Boron Nitride) is a synthesis product of Boron and Nitrogen with an high thermical and chemical stability, at the second place in the ranking of hardness materials (after Diamond) with about HV 4500. CBN allows to the processing of ferrous-based materials, with the result to obtain very high cutting performances in all grinding processes.
There are large stock of types and shapes of CBN grain, but also about the quality: wheels are suitable for grinding processing on hard and hardened steels.
