Tool 150i625M030A

Corner chipping kills tool life in harder materials before you get to use the geometry properly. The R0.03" corner radius on this 150 Series end mill distributes cutting forces over a broader edge area, which reduces stress concentrations that cause premature failure.

Five flutes drop chip load per tooth at your current feed rate, keeping temperatures manageable in steel, iron, titanium, and nickel alloys.
The TiAlSiN coating adds another thermal barrier while maintaining lubricity at higher cutting speeds.
That combination lets you push feeds in semi-finishing operations without the heat buildup that degrades surface finish.
The 0.625" cutting diameter handles most general machining envelope requirements while the radiused corner extends tool life in interrupted cuts common to steel fabrication work.