CCMT 120404 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of a PVD-coated cemented carbide grade optimised for stainless steel and the ISO CCMT form for consistent turning performance; the stable, sharp cutting edge and dedicated chipbreaker ensure reliable medium‑duty machining. Order directly via Metav Werkzeuge or consult our specialists for application support.

CCMT120404 AH6225 Tungaloy turning insert — ISO‑standard CCMT form, PVD‑coated cemented carbide for turning

The CCMT120404 AH6225 Tungaloy insert is an ISO‑normed, rhombic turning insert designed for external and internal turning operations, offering a balanced combination of edge sharpness and wear resistance for variable machining conditions.

• PVD-coated cemented carbide AH6225
• ISO CCMT120404 rhombic form
• 0.4 mm nose radius for medium finishes
• Single-sided chipbreaker with hole and countersink

Consistent cutting performance for stainless steel turning

The PVD‑coated cemented carbide composition in this grade is engineered for machining stainless steel under changing cutting conditions. The AH6225 grade combines a sharp edge with a robust substrate, which reduces flank wear while maintaining cutting stability. PVD coating improves resistance to abrasive and adhesive wear, so the insert preserves edge geometry longer during medium‑duty cuts. For less experienced users, PVD‑coated means a thin, hard surface layer that limits heat‑related wear and helps prevent built‑up edge formation, resulting in more predictable surface finishes.

Secure fit and simple compatibility checks for toolholders

Designed as an ISO‑standard CCMT insert, compatibility with an external holder or boring bar depends on form, clearance angle, tolerance class, fastening type, size and thickness. The insert’s rhombic geometry and the presence of a central hole with a single‑sided countersink enable straightforward clamping and repeatable positioning. When replacing inserts, match the CCMT120404 designation, the 7° clearance and the 4.76 mm thickness to the holder specification to ensure correct seating and stable cutting conditions; correct fit reduces vibration and extends both insert and holder life.

Predictable chip control and process security

A single‑sided chipbreaker tailored to the insert geometry promotes controlled chip formation and evacuation during both external and internal turning. Combined with a 0.4 mm nose radius, the configuration delivers a balance between surface quality and tool strength—ideal for medium‑cut depths and variable feeds. The design supports efficient cycle times by reducing unexpected interruptions for edge changes, and the stable cutting edge of the AH6225 grade contributes to consistent, repeatable results batch after batch.

Practical application and handling notes

The insert is intended for conventional turning tasks on stainless steel workpieces; select the chipbreaker and grade according to the workpiece alloy and the required surface finish. The CCMT form allows flexible orientation in many ISO CCMT holders, while the cylindrical hole plus one‑sided countersink (40°–60°) ensures positive clamping. Replace inserts at the first signs of irregular wear to maintain process reliability and part quality. For tailored cutting data or to verify holder compatibility, technical consultation is recommended.

Contact Metav Werkzeuge for personalised advice on integrating the Tungaloy CCMT120404 AH6225 insert into production and to arrange supply via Metav Werkzeuge’s specialists

Technical data

• Article number: 6903258
• Manufacturer SKU: TUN6903258
• SKU: 6903258‑Tungaloy
• Model series: ISO‑Drehwendeschneidplatten
• Material: Cemented carbide

Core technical data

• Insert designation: CCMT120404
• Grade/sort: AH6225
• Corner radius: 0.4 mm
• Insert size: 12 mm
• Thickness: 4.76 mm
• Clearance angle: 7°
• Included angle: 80°
• Hole style: with hole; cylindrical hole + one‑sided countersink (40°–60°)

Special features

• PVD coating
• Universal grade for stainless steel machining
• Single‑sided chipbreaker
• Rhombic insert form (CCMT)
• ISO‑standard design for wide holder compatibility
• Stable, sharp cutting edge for medium machining

FAQ

What materials is this insert suitable for?
The CCMT120404 AH6225 insert is formulated primarily for stainless steel machining; the AH6225 grade offers a balance of edge sharpness and wear resistance ideal for variable cutting conditions.

How does the chipbreaker affect machining?
The single‑sided chipbreaker on this insert promotes controlled chip formation and evacuation, improving process security and reducing the likelihood of chip interference during turning operations.

Which holder features must be matched to ensure compatibility?
Compatibility requires matching form, clearance angle (7°), tolerance class, fastening type, size (12 mm) and thickness (4.76 mm); using an ISO CCMT‑compatible holder ensures correct seating.

What does the PVD coating deliver in daily use?
PVD coating increases surface hardness and heat resistance, which reduces abrasive and adhesive wear on the cutting edge and extends operational life under medium cutting conditions.

Is the corner radius suitable for finishing?
The 0.4 mm corner radius offers a compromise between surface finish and edge strength—well suited to medium finishes where durability is also required.

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.