New CBN Grades IB55 and IB85

ISCAR is introducing two new CBN (Cubic Boron Nitride) grades:
the IB55, mainly for hardened steel and IB85 for cast iron and hardened steel. Different CBN grades can optimize the performance
in various applications, depending on workpiece composition and properties as well as the applied machining conditions.

IB55: For semi-finishing and finishing of hardened steel, even under interrupted conditions. This new grade will replace the current IB65.

IB85: For machining grey cast iron and cast iron with
hardness >45 HRc and heat-resistant alloys. The new IB85 offers an alternative to the current IB90 for most of the applications.
Note: IB65 and IB80 will be phased out gradually.

Insert Geometries:
All new IB55 and IB85 inserts have a single-tipped working corner. On their cutting edge both grades have a T-land of 0.14 x 20°. The IB55 grade also has a honing of 0.010-0.015 mm.