Sandvik Coromant 5730691 Turning Insert Dcmt 3/8 Ic

Product Description

The SANDVIK COROMANT 5730691 is a DCMT-style solid carbide turning insert designed for precision external turning operations. Part of the CoroTurn 107 series, this insert features a 55-degree diamond shape with a 7-degree relief angle and a neutral hand orientation. The dual-layer TiAlN and AlCr2O3 coating is applied via PVD process, delivering strong heat and wear resistance at the cutting edge. The 0.20 mm corner radius and MF chip breaker geometry make this insert well suited for light to medium finishing cuts on challenging workpiece materials. Licensed HVAC techs and machinists operating CNC lathes will recognize this as a high-precision indexable insert for controlled, repeatable material removal.

This insert is engineered primarily for machining stainless steel (ISO material code M) and is also rated for superalloys and titanium (ISO material code S). The DCMT geometry and MF chip breaker work together to produce controlled chip formation and reduced cutting forces on heat-resistant and work-hardening materials. It is a direct fit for CoroTurn 107 toolholders that accept screw-lock DCMT inserts with a 3/8-inch inscribed circle. Typical applications include external turning, light facing, and contour work on CNC lathes in production machining environments.

Key Features

• 55-degree diamond insert shape (shape code D) for versatile external turning and contouring
• TiAlN and AlCr2O3 dual-layer PVD coating for wear resistance on stainless steel and superalloys
• MF chip breaker geometry optimized for light to medium finishing cuts with controlled chip evacuation
• 7-degree relief angle (clearance code C) reduces friction and supports free-cutting action
• Screw-lock insert holding method (hole diameter 0.1732 inches) for secure, repeatable seating
• 2 cutting edges per insert for cost-effective tool life management

Compatibility

Designed for use with CoroTurn 107 toolholders accepting DCMT screw-lock inserts with a 3/8-inch (0.3750 inch) inscribed circle. ISO designation: DCMT 11 T3 02-MF 1115. Manufacturer grade 1115. Compatible with workpiece materials classified under ISO codes M (stainless steel) and S (superalloy and titanium).

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine fully powered down and the spindle locked before indexing or replacing inserts. Use the appropriate Torx or hex key as specified by the CoroTurn 107 toolholder documentation to seat the clamping screw — do not overtighten. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert. Confirm the insert is fully seated and the clamping screw is secure before resuming any cutting operation.