100 Series

Tool 100i625M030A

Tool life in hardened steels comes down to how well the coating stays put. The TiAlSiN coating on this 0.625" end mill creates a barrier between the carbide substrate and the workpiece, reducing the chemical wear that typically shortens runs in steel and nickel alloys.

Four flutes keep the heat and load spread out across more cutting edges.
In roughing operations on 4140 or Inconel, that distribution prevents any single edge from taking the brunt of the work.
The R0.03" corner radius reinforces the cutting edge where it meets the workpiece, reducing the stress concentration that leads to chipping on interrupted cuts.
The coating handles the chemical side of wear while the geometry handles the mechanical side.
Together they extend run times in materials where carbide typically struggles with consistency.