Sandvik Coromant 8003591 Turning Insert VNMG331-SF S205

Product Description

The SANDVIK COROMANT 8003591 is a VNMG-style turning insert in the T-Max P series, designed for precision external turning operations on CNC lathes and turning centers. The insert is manufactured from solid carbide and carries a CVD-applied multilayer coating of Al2O3, TiCN, and TiN, which provides heat resistance and extended tool life when cutting difficult materials. With a 35-degree diamond shape (Insert Shape Code V), a 3/8-inch inscribed circle, and a 0.0156-inch (0.40 mm) corner radius, this insert is sized and geometried for finishing and semi-finishing cuts. It is cataloged under ISO code VNMG 16 04 04-SF S205 and carries the SF chip breaker geometry. Installation and use require a compatible VNMG toolholder with clamp or screw holding. This insert is typically handled by machinists and CNC tooling specialists working in aerospace, defense, and industrial manufacturing environments.

This insert is engineered for primary use on superalloy and titanium workpiece materials, corresponding to ISO material code S. These material groups include nickel-based superalloys, cobalt alloys, titanium alloys, and similar high-temperature, high-strength materials that demand sharp, wear-resistant cutting edges and stable chip control. The SF chip breaker geometry is suited for finishing passes where surface finish and dimensional accuracy are critical. It is used in job shops and production facilities where T-Max P series tooling is the standard platform.

Key Features

• CVD-coated solid carbide with Al2O3, TiCN, and TiN multilayer stack for wear and thermal resistance
• SF chip breaker geometry optimized for finishing and semi-finishing on superalloys and titanium
• 35-degree diamond shape (V code) with 4 usable cutting edges per insert
• 3/8-inch inscribed circle with 0.40 mm corner radius for precise, controlled cuts
• Neutral hand orientation — compatible with standard VNMG right-hand and left-hand toolholders depending on setup
• Clamp and screw holding method for rigid, repeatable seating in the toolholder pocket

Compatibility

Designed for use in VNMG-style toolholders compatible with the T-Max P series platform. This insert uses a clamp or screw holding method and fits holders with a 0.150-inch hole diameter specification. Confirm toolholder pocket geometry matches VNMG 16 04 04 insert seating requirements before installation.

Installation Notes

Insert seating and clamping should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before changing inserts. Inspect the toolholder pocket for chips, damage, or debris before seating the new insert, as contamination in the pocket will affect clamping force and insert position. Do not exceed the manufacturer-specified clamping torque for the screw or clamp style used in the holder.