CNMG 120412 AH8005 Wendeplatten - Tungaloy

Take advantage of a wear-resistant, PVD-coated carbide grade that excels in stable machining of heat-resistant alloys and hard materials; the CNMG120412 AH8005 insert combines an 80° rhombic geometry with a 1.2 mm corner radius and a cylindrical locating hole for reliable clamping. Order the insert directly via Metav Werkzeuge or ask the consultants for application-specific advice.

CNMG120412 AH8005 CNMG ISO turning insert — PVD-coated carbide, 80° (Tungaloy)

CNMG120412 AH8005 is an ISO-standard turning insert engineered for stable, high-wear applications such as heat-resistant alloys and hard materials in both external and internal turning.

• ISO CNMG120412 rhombic insert, 80° geometry
• PVD-coated carbide grade AH8005 for durability
• 1.2 mm corner radius for robust cutting edge
• Double-sided chipbreaker with cylindrical hole design

Enhanced wear resistance for demanding materials

The PVD-coated carbide composition of this indexable insert provides a hard, wear-resistant surface that maintains edge integrity when machining heat-resistant alloys and other hard materials. The AH8005 grade is specified for high-temperature performance and improved abrasion resistance, which reduces flank wear under stable cutting conditions and extends productive tool life. Explaining PVD simply: a thin, engineered coating applied by physical vapour deposition increases surface hardness and thermal stability, helping to keep cutting forces predictable and finishing consistent during medium- to high-duty turning.

Precise fit and secure clamping to reduce downtime

Built to the ISO CNMG120412 form, the insert’s 80° rhombic shape and cylindrical locating hole ensure consistent seating in compatible toolholders. The 4.76 mm plate thickness and size 12 give a solid contact area for the clamping mechanism, while the double-sided chipbreaker provides two indexable cutting orientations per side for repeatable performance. Compatibility is driven by form, clearance angle, tolerance class, fastening and size, so correct matching of the holder and insert prevents chatter, minimises setup time and lowers the frequency of tool changes.

Practical guidance for turning applications

Designed primarily for turning—both external and internal—the insert performs best with a stable machining setup and an appropriately matched chipbreaker and grade for the workpiece material. The 1.2 mm corner radius balances edge strength and dimensional control, making it suitable where a robust cutting edge is required without compromising surface finish. As an indexable insert, it is intended for replacement rather than regrinding; indexing to a fresh edge is a quicker and more cost-effective route to restoring cutting performance than reconditioning. For less experienced technicians, choosing the right chipbreaker and cutting data according to the workpiece material and machine rigidity will yield the best results.

For heavy-duty turning of heat-resistant alloys and hard materials, request availability of the CNMG120412 AH8005 Tungaloy indexable insert from Metav Werkzeuge — contact info@metav-werkzeuge.com or call +49 2822 7131930 for tailored advice and fast processing.

Technical data

• Article number: 6741641
• Manufacturer SKU: TUN6741641
• SKU: 6741641-Tungaloy

Facts

• Shape: rhombic
• Geometry angle: 80°
• Corner radius: 1.2 mm
• Thickness: 4.76 mm
• Size: 12

Special features

• Material: Carbide
• Coating / grade: AH8005 (PVD-coated)
• Hole: with hole (cylindrical)
• Chipbreaker: double-sided
• Application: Turning (external and internal)
• Series: ISO turning indexable inserts

FAQ

Which materials is this insert best suited for?
The CNMG120412 AH8005 Tungaloy turning insert (SKU 6741641-Tungaloy) is optimised for heat-resistant alloys and other hard materials; it also performs under stable conditions on many stainless steels when cutting parameters are adapted.

How is compatibility with a toolholder determined?
Compatibility depends on insert form, clearance angle, tolerance class, fastening method, size and thickness; the CNMG120412’s cylindrical hole and ISO CNMG form ensure secure seating in matching CNMG toolholders.

Does the insert provide multiple cutting edges?
Yes, the double-sided chipbreaker design allows the indexable insert to be rotated to fresh cutting edges, extending service life before replacement.

Can this insert be resharpened?
Indexable inserts such as the CNMG120412 AH8005 are intended for indexing and replacement rather than regrinding; economical performance is maintained by using fresh edges as required.

What does the AH8005 designation signify?
AH8005 denotes the PVD-coated carbide grade tuned for wear resistance and thermal stability; the coating improves surface hardness and cutting-edge life when machining demanding alloys.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.