Iscar 3398497 Corner Radius End Mill 0.5 in 5 Flute Carbide

Product Description

The ISCAR 3398497 is a solid carbide corner radius end mill from the ECI-5-VF series, designed for demanding metal removal in both roughing and finishing operations. It features a 0.5 inch mill diameter, a 0.125 inch corner radius, and five flutes with a variable index geometry that helps reduce chatter and improve surface finish. The AlTiCrSiN PVD coating provides enhanced wear resistance and heat tolerance at elevated cutting temperatures. This tool installs in a standard straight-bore toolholder with an h6-tolerance shank and is suited for machinists running aggressive programs on hard and difficult-to-machine alloys.

This end mill is built for use on steel, stainless steel, cast iron, superalloys, titanium, and hard materials, covering ISO material codes P, M, K, S, and H. The short flute length and extended reach configuration make it well suited for semi-finishing and finishing passes in pockets and cavities where rigidity and tool life are critical. It is a single-end, right-hand cut, right-hand flute tool with a spiral flute form and normal pitch. Machinists in aerospace, die and mold, and general precision machining shops will find this tool appropriate for production environments.

Key Features

• AlTiCrSiN PVD coating for high wear resistance in hard and abrasive workpiece materials
• Variable index flute spacing reduces harmonic vibration and chatter during cutting
• 0.125 inch corner radius extends tool life and reduces corner stress on the workpiece
• Submicron carbide grade substrate for improved toughness and edge retention
• h6 shank tolerance ensures consistent, accurate seating in toolholders
• Compatible with both roughing and finishing material removal strategies in a single tool

Compatibility

Designed for use with a standard straight-cylindrical bore toolholder. Rated for primary workpiece materials including steel, stainless steel, cast iron, superalloys, titanium, and hard materials per ISO codes P, M, K, S, and H.

Installation Notes

This tool is installed by a machinist or CNC setup technician in a compatible straight-bore toolholder to the correct drawbar torque per the toolholder manufacturer specification. Ensure the machine spindle is fully stopped and the tool is properly seated and secured before beginning any operation. Confirm runout is within acceptable limits after installation, as excessive runout accelerates edge wear on variable-index geometries. Follow applicable shop safety and machine guarding procedures when setting or changing tooling.