SCMT 120412 AH6225 Wendeplatten - Tungaloy

Benefit from the combination of a PVD-coated AH6225 grade and a 1.2 mm corner radius for a stable cutting edge and consistent surface quality in medium turning operations. The ISO SCMT120412 form with a central hole and a 7° relief angle ensures broad compatibility with standard turning holders and quick indexability. Order via Metav Werkzeuge or consult their specialists for application advice.

SCMT 120412 AH6225 — Turning insert (ISO) by Tungaloy, PVD-coated carbide, 1.2 mm radius

A Tungaloy SCMT 120412 AH6225 insert engineered for ISO-standard external and internal turning, designed to balance sharpness and edge stability for stainless steels and mixed materials

• PVD-coated carbide AH6225
• 1.2 mm corner radius for balanced performance
• Square ISO form 12 mm, 4.76 mm thick
• Centre hole with single-sided countersink 40°–60°

Stable edge and improved surface finish for demanding materials

The insert’s AH6225 composition and PVD-coated surface combine to reduce adhesion and wear when machining stainless steels. The assigned chipbreaker PM promotes reliable chip control across changing cut conditions, which decreases the risk of built-up edge and improves repeatable part finish. This geometry is aimed at medium-depth turning where a sharp yet resilient cutting edge yields consistent dimensional accuracy and fewer secondary operations.

ISO conformity and secure clamping for predictable setups

Built to the ISO designation, the SCMT form and the central fixing system with a cylindrical hole and single-sided countersink (40°–60°) make the insert compatible with a wide range of external holders and boring bars. The 7° relief angle and square shape provide a stable seating and help to reduce micro-movements under load, shortening setup times and simplifying tool change procedures. This predictability supports higher machine utilisation and steadier process control.

Geometry tuned for longevity and consistent results

A 1.2 mm corner radius provides a pragmatic compromise between cutting-edge strength and surface quality: increased radius boosts resistance to edge chipping, while maintaining a fine finish on workpieces. The 4.76 mm plate thickness and the 90° included angle contribute to robust mechanical support in the clamping seat, which together with the PVD protection extends effective tool life. The combination of features promotes economical machining by lowering the frequency of index changes and reducing scrap.

For process-critical turning with Tungaloy AH6225 inserts, contact Metav Werkzeuge for tailored technical guidance or to arrange supply via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6903309
• Manufacturer SKU: TUN6903309
• SKU: 6903309-Tungaloy
• ISO designation: SCMT120412-PM
• Model series: ISO turning inserts
• Material: carbide

Facts

• Corner radius: 1.2 mm
• Insert size: 12 mm
• Plate thickness: 4.76 mm
• Relief angle: 7°
• Included angle: 90°

Special features

• Grade/coating: AH6225, PVD-coated
• Chipbreaker: PM
• Shape: square
• Hole: cylindrical hole with single-sided countersink (40°–60°)
• Application: turning

FAQ

Which materials is this insert best suited for?
The SCMT 120412 AH6225 insert is optimised for stainless steels and performs well on mixed materials where a sharp, stable edge is required.

How does the PM chipbreaker affect machining?
The PM chipbreaker on the SCMT120412-PM promotes controlled chip formation and evacuation, enhancing surface finish and reducing the chance of built-up edge during interrupted or variable cuts.

What dimensions and geometry should be checked for holder compatibility?
Confirm the ISO form (SCMT), insert size (12 mm), thickness (4.76 mm), relief angle (7°) and the central hole/countersink style to ensure the insert seats correctly in the chosen holder.

Is this insert suitable for internal and external turning?
Yes, the ISO-standard geometry and central fixing make the insert suitable for both external turning and appropriate internal boring applications when matched to a compatible holder.

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.