Advantages of Boron Carbide (B₄C) Powder for  Grinding

1. Extremely high hardness With a Mohs hardness of 9.3, boron carbide is harder than most conventional abrasives like silicon carbide and alumina. It delivers strong cutting ability for fast material removal during rough grinding on hard workpieces such as tungsten carbide, advanced ceramics and sapphire.
2. High wear resistance and long service life B₄C grains resist bluntness and abrasion under heavy grinding loads. Less frequent replacement of abrasive powder lowers operating cost in bulk rough grinding processes.
3. Excellent chemical stability It is inert to most acids, alkalis and corrosive media. No chemical reaction occurs with most workpiece materials during grinding, avoiding surface contamination and corrosion.
4. Good high-temperature resistance Boron carbide maintains its hardness and structural stability at elevated temperatures generated in heavy rough grinding. It does not easily soften or lose cutting performance under grinding heat.
5. Low thermal expansion Its low thermal expansion coefficient helps reduce thermal stress and thermal deformation of workpieces, which is beneficial for controlling basic dimensional stability even in aggressive stock-removal operations.
6. Low density B₄C is lighter than many superhard abrasives. For the same grinding weight, it covers a larger working area and brings better mixing uniformity in grinding slurries.
7. Cost-effective superhard abrasive Compared with diamond and cubic boron nitride (CBN), boron carbide offers a much lower price while retaining superhard performance, making it an economical option for heavy rough grinding.

Boron Carbide Size Distribution