Sumitomo 12HA712 Turning Insert TPG322 ACP200 Solid Carbide

Product Description

The SUMITOMO 12HA712 is a solid carbide turning insert in the TPG322 geometry, designed for precision external turning operations on CNC and manual lathes. This insert features a dual-layer PVD coating of TiAlN and AlCrN under SUMITOMO's proprietary Super ZX coating designation, providing high heat resistance and wear performance during steel cutting applications. The triangular insert shape (60-degree included angle) with a positive rake and 11-degree relief angle reduces cutting forces and helps maintain edge integrity. It is intended for use by machinists and tool-and-die professionals performing finish and semi-finish turning.

The 12HA712 is suited for secondary workpiece materials classified as steel (ISO P-class). Its TPG-style clamped holding method makes it compatible with standard TP-series toolholders. The ANSI code is TPG322 and the ISO equivalent code is TPGN160308, covering a 3/8-inch inscribed circle, 1/8-inch insert thickness, and a 1/32-inch corner radius. Typical applications include turning steel components in production machining environments where consistent tool life and surface finish are required. This insert carries no chipbreaker (N designation), making it appropriate for continuous cuts with controlled chip flow.

Key Features

• Dual PVD coating: TiAlN and AlCrN (Super ZX designation) for elevated heat and wear resistance
• Solid carbide substrate for rigidity and dimensional stability under cutting loads
• Positive rake geometry with 11-degree relief angle reduces cutting forces on steel workpieces
• TPG clamp-style holding method for secure seating in standard TP-series toolholders
• No chipbreaker (N) configuration suited to continuous turning cuts
• Compliant with ANSI and ISO 13399 insert standards for cross-reference compatibility

Compatibility

Designed for use in TP-series toolholders accepting TPG322 geometry inserts. ANSI code TPG322 and ISO code TPGN160308 allow direct cross-reference to compatible toolholder systems. Rated for steel (ISO P-class, secondary workpiece material code P) turning applications.

Installation Notes

Installation should be performed by a qualified machinist following the toolholder manufacturer's clamping torque and seating specifications. Power down and lock out the machine spindle before changing inserts. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert. Never force an insert into a pocket; improper seating can cause insert fracture or workpiece damage.