Polycrystalline Synthetic Cutting Materials

PCBN Full Round Discs and Cutting Tips


DIAMONDS – PCBN, carbide backed and solid is available in high and low CBN grades, optimised for roughing or finishing cast iron and hardened steels as well as special alloys. Our Polycrystalline Cubic Boron Nitride (PCBN) products from “SF-Diamond Co., Ltd.” have a metal-ceramic binder matrix in the cutting layer. Due to the good conductivity of the matrix material, both the carbide-backed raw plates and the solid PCBN can be machined by wire-edm without any problems (exception BN 960).

Polycrystalline Synthetic Cutting Materials

Available PCBN qualities


VarietyCBN contentGrain sizeBinder
CB500/BN 500~50 vol.-%2 µmTiCN
CB720/BN 720~70 vol.-%4 µmTiN
CB900/BN 900~90 vol.-%3 µmAl-Co-W
CB960~96 vol.-%10 µmAl-Co
BN960~96 vol.-%2 µmAIN

On request, we can also supply customised pre-cut tips according to drawings.



Data & facts


PCBN HM-backed (CB)Solid PCBN (BN)
Full round disc diameter58 mm (+ 1)46 mm (+ 1)
Total thickness 1,6 / 3,2 / 4,8 mm (+/- 0,05)1,6 / 3,2 / 4,8 mm
PCBN layer thickness 0,8 mm (+/- 0,15)
Parallelism+/- 0,05 mm+/- 0,05 mm
Flatness of the PCBN surface< 0,1 mm
PCBN surface lappedground

Any questions? We have the answers for you.

At our comprehensive warehouse, we keep a large number of different cutting material qualities and grit sizes ready for you on stock and are able to supply the common products on short notice.
Needless to say that we have an open ear for individual inquiries and are happy to help you with competent advice.

+49 (0) 6181 - 82088 info@diamonds-hanau.de