Seco 03310376 Turning Insert CCMT432-M3 TP25 Carbide

Product Description

The SECO 03310376 is a solid carbide turning insert designed for precision metal cutting in CNC and manual lathe operations. It carries the CCMT432-M3 industry standard designation and is manufactured to the TP25 grade with a multilayer CVD coating of TiCN and Al2O3 over a carbide substrate. The diamond 80-degree insert shape provides a strong cutting edge geometry, while the M3 chip breaker promotes controlled chip flow across a range of feed rates and depths. With a 0.5079-inch insert length, a 0.5000-inch inscribed circle, and a 0.0315-inch corner radius, this insert suits medium to semi-finish turning passes. It is held in place by a screw-clamp toolholder and is rated for neutral hand orientation.

This insert is engineered primarily for steel machining, covering material grades P20, P25, P30, and P35 per ISO classification. Secondary workpiece materials include stainless steel and cast iron. Its multi-use geometry supports boring, facing, and turning applications in production and job-shop environments. The positive rake angle of 18 degrees reduces cutting forces, making it suitable for both light and moderate material removal on CNC turning centers and manual engine lathes. Machinists and toolroom operators handling steel and stainless components will find this insert fits standard CCMT-style toolholders commonly used in those operations.

Key Features

• TP25 carbide grade with multilayer CVD TiCN and Al2O3 coating for extended tool life on steel
• CCMT432-M3 geometry: 80-degree diamond shape with M3 chip breaker for controlled chip formation
• Positive 18-degree rake angle reduces cutting forces on steel and stainless steel
• Chamfered and honed cutting edge style improves edge stability and reduces chipping risk
• Screw-clamp holding method provides rigid, repeatable insert seating in compatible toolholders
• Neutral hand orientation suits both left- and right-hand toolholder configurations
• Compliant with ANSI and ISO insert standards

Compatibility

Designed for use in screw-clamp CCMT-style toolholders accepting a CCMT432 insert with a 0.2205-inch hole diameter. Primary workpiece material is steel (ISO code P); secondary materials are stainless steel (M) and cast iron (K). ISO insert code: CCMT120408-M3.

Installation Notes

Insert installation and replacement should be performed by a qualified machinist or toolroom technician with the machine spindle fully stopped and all motion locked out per shop lockout/tagout procedures. Seat the insert firmly against the toolholder pocket locating surfaces before tightening the clamp screw to avoid micro-movement during cutting. Inspect the insert pocket and clamp components for wear or debris before seating a new insert. Discard inserts when cutting edge wear or chipping is visible rather than attempting to re-use compromised edges.