Sumitomo 12HV712 Turning Insert TPG322 AC510U Carbide

Product Description

The SUMITOMO 12HV712 is a solid carbide turning insert designed for precision metal cutting on CNC lathes and turning centers. It carries the ANSI designation TPG322 and ISO code TPGN160308, and is coated with TiAlN and AlCrN via a PVD process under SUMITOMO's proprietary Super ZX coating system. The triangular insert shape with a 60-degree included angle provides three usable cutting edges. A 3/8-inch inscribed circle diameter and 1/32-inch corner radius make this insert well suited for moderate depth-of-cut finishing and semi-finishing operations. Qualified machinists and tooling technicians install this insert using a clamp-style holding method on compatible toolholders.

The 12HV712 is engineered for turning operations where heat resistance and edge stability are critical. The AC510U grade with Super ZX PVD coating is rated for use on superalloys, making it applicable in aerospace, power generation, and industrial machining environments where high-temperature alloys such as nickel-based and titanium workpieces are common. The positive rake geometry promotes free cutting action and reduces cutting forces in these demanding materials. This insert is sold individually with a minimum order quantity of 10 units.

Key Features

• Solid carbide substrate with TiAlN and AlCrN PVD coating for heat and wear resistance
• Manufacturer grade AC510U with proprietary Super ZX coating designation
• TPG insert style with clamp holding method and positive rake geometry
• 60-degree triangular shape provides three cutting edges per insert
• 1/32-inch corner radius suitable for semi-finishing and finishing passes
• Meets ANSI and ISO 13399 standards for insert geometry and identification

Compatibility

Designed for use in TPG-style clamp toolholders accepting a 3/8-inch inscribed circle triangular insert per ANSI TPG322 and ISO TPGN160308 specifications. Rated for secondary workpiece material code S (superalloys).

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine before seating or replacing inserts. Use the appropriate torque wrench and clamp screw specified by the toolholder manufacturer — do not over-tighten the clamp screw. Inspect the insert pocket for chips or debris before seating the new insert to ensure proper contact and tool life.