Tool 150i750L030A

Corner radius keeps the cutting edge intact longer in interrupted cuts. The R0.06" radius on this 150 Series end mill distributes cutting forces across more carbide rather than concentrating them at a sharp corner.

Five flutes reduce chip load per tooth at the same feed rate, which matters when semi-finishing steel and nickel alloys where heat buildup degrades surface quality.
The TiAlSiN coating handles the oxidation temperatures you see in these materials better than uncoated carbide.
Aluminum and silicon content in the coating forms a protective oxide layer at cutting temperatures above 1800°F.
The 0.75" cutting diameter balances rigidity with access in typical workholding setups.
Corner radius geometry works well for profiling operations where you need controlled stock removal without the chatter that sharp corners can introduce in longer cuts.