Sandvik Coromant 8019674 Turning Insert Wnmg 08 04 16-MR 4425

Product Description

The SANDVIK COROMANT 8019674 is a WNMG-style indexable turning insert designed for precision metal cutting on CNC lathes and turning centers. Manufactured from solid carbide and coated with a CVD-applied TiCN, Al2O3, and TiN multilayer stack, this insert delivers wear resistance and thermal stability during continuous and interrupted cuts. It carries a neutral hand orientation, a 0.5 inch inscribed circle, and a 0.0625 inch corner radius, making it a standard fit in WNMG toolholders used throughout production machining environments. Machinists and CNC operators working in job shops, contract manufacturing, and OEM production facilities install and index this insert as part of routine tooling maintenance.

This insert is engineered for cutting steel as its primary workpiece material, aligning with ISO P classification under the WNMG-MR series. The MR chipbreaker geometry is suited for medium roughing to finishing passes on low to medium alloy steels. Secondary workpiece material classification is ISO K, extending its usable range. It is appropriate for both light and moderate depth-of-cut applications where consistent chip control and surface finish are required. The grade 4425 designation indicates a CVD-coated carbide substrate balanced for steel turning where both crater and flank wear resistance matter.

Key Features

• CVD multilayer coating: TiCN, Al2O3, and TiN for wear and oxidation resistance
• WNMG insert shape with 80-degree included angle and 0-degree relief angle (clearance code N)
• 0.5 inch inscribed circle with 0.0625 inch corner radius for standard WNMG toolholder compatibility
• MR chipbreaker optimized for medium roughing and finishing on steel
• Neutral hand orientation fits both right-hand and left-hand toolholders
• Clamp and screw holding method for secure seating under cutting load

Compatibility

Designed as an OEM-style indexable insert for use in WNMG-style toolholders accepting a 0.5 inch inscribed circle insert with clamp or screw retention. ISO code WNMG 08 04 16-MR 4425 governs dimensional and geometric interchangeability with compatible tooling systems.

Installation Notes

Indexable turning inserts are installed and replaced by CNC machinists and tool setters following machine lockout procedures before entering the work envelope. Use the correct torque wrench and manufacturer-specified insert screws or clamps to seat the insert fully against the toolholder pocket. Inspect the pocket seat for chips or debris before indexing to a fresh cutting edge, as a contaminated pocket causes premature insert failure. Follow your facility safety program and machine builder guidelines when changing tooling on live equipment.