CCMT 120412 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of a PVD-coated carbide cutting edge, a 1.2 mm nose radius, and ISO compatibility for dependable stainless-steel turning; this insert delivers stable edge life and adaptable chip control. Order the insert directly via Metav Werkzeuge or consult our advisers for application-specific recommendations.

CCMT 120412 AH6225 Tungaloy — ISO turning insert, PVD-coated carbide

The CCMT 120412 AH6225 is an ISO-standard rhombic turning insert designed for external and internal turning, optimised for machining stainless steels under variable conditions

• PVD-coated carbide grade AH6225
• Rhombic CCMT geometry, 80° included angle
• 1.2 mm nose radius for improved finish
• Cylindrical hole with single-side countersink

Precise performance for stainless-steel turning

The PVD-coated cemented carbide substrate in grade AH6225 offers a balance of sharpness and edge stability for medium machining. The insert’s rhombic CCMT geometry and 80° included angle make it suitable for a wide range of external and internal turning operations, while the 1.2 mm nose radius helps produce consistent surface quality without excessive cutting forces. The coating improves thermal and abrasive resistance, which supports longer tool life and reduced downtime in serial production.

Reliable chip control and edge life under changing conditions

Featuring a single-sided chipbreaker, the insert is tailored to control swarf formation when cutting stainless steels and similar alloys. The combination of the AH6225 grade and the PVD layer reduces edge wear during intermittent cuts and irregular feeds, delivering repeatable results over longer cycles. The moderate relief angle of 7° and the insert thickness of 4.76 mm contribute to mechanical stability, reducing vibration and helping maintain dimensional accuracy on turned components.

System compatibility and practical setup guidance

Compatibility with toolholders is governed by form, clearance angle, tolerance class, fixing method, size and thickness. The insert includes a cylindrical hole with a single-side countersink (40°–60°) to match common clamping systems; shims, clamping kits and replacement screws form the complete system. For workshops assessing holder fitment, check the insert’s ISO designation 120412, plate size (12 mm) and hole style against the holder specification. When paired with a suitable external holder or boring bar, this insert performs reliably in production and jobbing environments.

For application advice or to secure CCMT 120412 AH6225 inserts from Tungaloy, contact Metav Werkzeuge for tailored recommendations and availability.

Technical Data

• Article number: 6903265
• Manufacturer SKU: TUN6903265
• Merchant SKU: 6903265-Tungaloy
• Manufacturer: Tungaloy

Facts

• Geometry: CCMT 120412
• Nose radius: 1.2 mm
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Relief angle: 7°
• Included angle: 80°
• Fixing: with hole
• Hole style: cylindrical hole + single-side countersink (40°–60°)

Special features

• Material: cemented carbide
• Coating: PVD
• Grade: AH6225 (universal for stainless steels)
• Chipbreaker: one-sided
• Plate shape: rhombic
• Typical application: external and internal turning
• System components: compatible holder, shim/clamping kit, replacement screws

FAQ

What materials is this insert best suited for?
The CCMT 120412 AH6225 insert is formulated for machining stainless steels, offering a good balance between a sharp cutting edge and robustness for medium cutting conditions.

How does the AH6225 grade affect tool life?
The AH6225 grade with a PVD coating improves wear resistance and maintains a stable cutting edge during intermittent cuts, which typically extends effective tool life under varying production conditions.

Which holder features are required for correct mounting?
Correct mounting depends on holder form, clearance angle, tolerance class, fixing type, size and thickness; the insert’s cylindrical hole with countersink is compatible with standard ISO clamp systems when matched to the correct holder.

What surface finish can be expected with a 1.2 mm radius?
A 1.2 mm nose radius balances finish and strength: it supports a smoother surface at moderate feeds while maintaining edge stability compared with larger radii.

Is this insert suitable for internal turning?
Yes, the ISO CCMT geometry and robust construction make it suitable for both external and internal turning tasks when used with a compatible boring bar or internal 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.