100R Series

Tool 100Ri750A

Steel and titanium generate heat. Heat kills tools, especially when you're hogging material at roughing feeds and speeds. The 100Ri750A addresses this with TiAlSiN coating over solid carbide substrate. The aluminum content in this coating handles higher temperatures than standard TiN while the silicon adds lubricity to reduce friction at the cutting edge.

Four flutes with chipbreaker geometry fragment chips before they pack the gullets or drag heat back into the workpiece.
That 0.008" chamfer strengthens the cutting edge against the shock loads that come with interrupted cuts and varying depths of cut in roughing operations.
The surface finish won't be pretty.
That's expected behavior in roughing operations on steel, iron, titanium, and nickel alloys.
You're clearing material efficiently so the finishing tool can do its job on consistent stock.