Sumitomo 19DYAFI Turning Insert CNMG432EMU AC700G Carbide

Product Description

The SUMITOMO 19DYAFI is a CNMG432EMU-style solid carbide turning insert with an AC700G manufacturer grade and a CVD-applied Al2O3 coating. Designed for negative-rake, neutral-hand turning operations, this insert features an 80-degree diamond shape with a 0.0313-inch corner radius and a 0.5000-inch inscribed circle. The insert thickness is 0.1875 inches and overall insert length is 0.5079 inches. It is engineered for productive metal removal on cast iron and steel workpieces in CNC and manual lathe applications. The EMU chip breaker geometry promotes controlled chip formation across a range of cutting conditions.

This insert is suited for external turning, facing, and profiling operations in production and job-shop environments. Primary workpiece materials include cast iron (ISO material group K) and steel (ISO material group P). It is commonly used in medium-duty roughing to semi-finishing passes where consistent tool life and chip control are required. The AC700G grade is formulated to maintain hardness and thermal resistance under the elevated temperatures typical of continuous and interrupted cut turning on ferrous materials.

Key Features

• AC700G grade solid carbide with CVD-applied Al2O3 coating for wear resistance on ferrous materials
• 80-degree diamond insert shape (CNMG style) provides two usable cutting edges per insert
• EMU chip breaker geometry for controlled chip flow in cast iron and steel turning
• Neutral hand orientation compatible with standard CNMG toolholders using clamp and pin holding method
• 0.0313-inch corner radius balances edge strength with surface finish capability
• Conforms to ANSI and ISO 13399 standards; ISO code CNMG120408N-MU

Compatibility

Designed for use in standard CNMG-style toolholders that accept clamp and pin insert retention. Compatible with CN-series toolholder systems. Suitable for CNC lathes and manual turning centers configured for CNMG 432 inserts.

Installation Notes

Installation is performed by qualified machinists or tooling setup technicians. Ensure the toolholder pocket and seating surface are clean and free of chips or debris before seating the insert. Secure the insert using the appropriate clamp and pin per the toolholder manufacturer's torque and assembly guidelines. Index or replace the insert when flank wear, chipping, or surface finish degradation is observed.