Sandvik Coromant 5742686 Milling Insert Grade 4030 Carbide

Product Description

The SANDVIK COROMANT 5742686 is a solid carbide milling insert in the R215.44 series, designed for use in indexable milling cutters on CNC machining centers and milling machines. Manufactured to grade 4030 with a CVD-applied multilayer coating of TiCN, Al2O3, and TiN, this insert delivers wear resistance and thermal stability during medium to heavy milling operations. The parallelogram insert shape features a positive rake geometry and a corner-rounded cutting edge style with a 0.41 mm corner radius. It measures 3.96 mm thick and carries insert size code 15T304. Installation is performed by machinists and tooling technicians working with compatible R215.44 series milling toolholders.

This insert is suited for milling steel and cast iron workpieces in both roughing and semi-finishing applications. The positive rake geometry reduces cutting forces, making it appropriate for operations where minimizing spindle load or machining thin-walled components is a priority. The WL chip breaker geometry supports reliable chip evacuation across a range of feed rates. With a maximum depth of cut of 0.5906 inches and an inscribed circle of 0.3740 inches, this insert is configured for moderate material removal rates in ferrous machining environments. It is a single-sided insert secured by a screw-style clamping method.

Key Features

• Grade 4030 solid carbide substrate with CVD multilayer TiCN, Al2O3, and TiN coating for wear and heat resistance
• Positive rake, corner-rounded cutting edge reduces cutting forces on steel and cast iron
• WL chip breaker geometry promotes consistent chip control across varied feed conditions
• Right-hand insert orientation with screw-style holding for secure seating in the toolholder
• Insert size code 15T304 with 0.41 mm corner radius for controlled edge geometry
• Compliant with ANSI and ISO standards; ANSI and ISO code R215.44-15T304M-WL 4030

Compatibility

Designed for use in SANDVIK COROMANT R215.44 series milling toolholders. Primary workpiece materials are steel (P) and cast iron (K) per ISO material classification. This insert is not stated as compatible with other series or toolholder families in the available product data.

Installation Notes

Installation is performed by a qualified machinist or tooling technician. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate Torx or hex key for the insert clamping screw and ensure the insert seat and clamping surfaces are clean and free of chips before seating the new insert. Do not exceed the toolholder manufacturer's specified speed and feed parameters for this insert geometry.