Sandvik Coromant 5745640 Milling Insert Grade 2040 R390

Product Description

The SANDVIK COROMANT 5745640 is a solid carbide milling insert in the R390 series, designed for use in square-shoulder and general milling applications across a range of demanding workpiece materials. This insert carries a CVD-applied TiCrN, Al2O3, and TiN multilayer coating under manufacturer grade 2040, providing thermal resistance and wear protection during continuous and interrupted cuts. It features a parallelogram shape with a positive rake angle of 20 degrees and a corner-rounded cutting edge style, contributing to smooth chip formation and reduced cutting forces. The insert measures 3.59 mm thick with an inscribed circle of 6.80 mm and accommodates a maximum depth of cut of 10.00 mm. It is sized to the 11T308 insert size code and is installed by licensed machinists and tooling professionals in CNC milling environments.

This insert is suited for machining steel, stainless steel, superalloys, and titanium, corresponding to ISO material application codes P, M, and S. The grade 2040 targets mid-to-high cutting speeds in these material groups, making it appropriate for production milling in aerospace, energy, and general manufacturing environments. The ML chip breaker geometry supports light-to-medium cutting conditions. The insert is right-hand oriented and single-sided, with a screw-type holding method. It is catalogued under ANSI and ISO code R390-11 T3 08E-ML 2040 and is compatible with cutter series M-32 and R390.

Key Features

• CVD multilayer coating: TiCrN, Al2O3, and TiN for extended tool life in difficult-to-machine materials
• Positive 20-degree rake angle reduces cutting forces and heat generation at the tool-workpiece interface
• ML chip breaker optimized for light-to-medium cutting conditions on steel and stainless steel
• Two cutting edges per insert, single-sided, right-hand orientation
• Corner radius of 0.80 mm (0.0315 inch) with corner-rounded edge style for improved edge stability
• Maximum depth of cut 10.00 mm; insert size code 11T308 for direct toolholder selection

Compatibility

Compatible with cutter series M-32 and R390 toolholders. ANSI and ISO designation R390-11 T3 08E-ML 2040 applies. Rated for material application codes P (steel), M (stainless steel), and S (superalloys and titanium) per ISO material classification.

Installation Notes

This insert is installed by qualified machinists or tooling technicians following the toolholder manufacturer torque specifications for the screw-clamp holding method. Verify insert orientation and seating before running the spindle. Inspect the insert pocket and clamping screw condition before each insert change. Follow applicable machine guarding and lockout-tagout procedures before accessing the toolholder.