Kennametal 6676423 Corner Radius End Mill 1/2 in 4 Flute Altin

Product Description

The KENNAMETAL 6676423 is a solid carbide corner radius end mill built for demanding metal removal in steel, stainless steel, cast iron, superalloys, titanium, and hard materials. It carries a 0.5 inch mill diameter, a 0.015 inch corner radius, and four right-hand spiral flutes with a 36-degree helix angle. The AlTiN PVD coating provides thermal resistance and extended tool life in high-temperature cutting environments. At 3.25 inches overall length with a 1.25 inch length of cut, this single-end, centercutting tool handles both roughing and finishing passes without a tool change. It belongs to KENNAMETAL's H1TE series, which targets submicron carbide grade performance in difficult-to-machine workpiece materials.

This end mill fits standard end mill toolholders with a straight cylindrical 0.5 inch shank. It is suited for CNC machining centers and manual mills used in job shops, aerospace, die and mold, and general metalworking applications. The centercutting design allows plunge entry, and the normal pitch, non-variable helix geometry makes it compatible with a wide range of conventional and climb milling strategies on steel and hard material workpieces.

Key Features

• AlTiN PVD coating for high-temperature wear resistance in ferrous and hard materials
• 0.015 inch corner radius reduces stress concentration and chipping at the cutting edge
• Centercutting geometry enables direct plunge entry without a pre-drilled pilot hole
• Four right-hand spiral flutes support both roughing and finishing in a single tool
• Submicron carbide grade substrate provides toughness and edge retention
• Straight cylindrical shank fits standard end mill toolholders without adapters

Compatibility

Designed for use with standard end mill toolholders. Primary workpiece materials include steel, stainless steel, cast iron, superalloys, titanium, and hard materials (ISO material codes P, M, K, S, H). Part of the KENNAMETAL H1TE series.

Installation Notes

Installation and tool changes should be performed by a qualified machinist with the machine in a locked-out, zero-energy state. Confirm toolholder runout and clamp torque per the toolholder manufacturer's specifications before cutting. Do not exceed the tool's rated length of cut when programming axial depth of cut. Inspect the corner radius and cutting edges for chipping or wear before each use.