CCMT 120408 AH6225 Wendeplatten - Tungaloy

Take advantage of the proven combination of a sharp, stable cutting edge and PVD-coated carbide for consistent stainless-steel turning results; order directly via Metav Werkzeuge or consult the team for holder compatibility and process optimisation.

CCMT120408 AH6225 Tungaloy turning insert — Rhombic 80° | PVD-coated carbide

The CCMT120408 AH6225 is an ISO-format rhombic turning insert designed for reliable external and internal turning, optimised for stainless-steel machining.

• PVD-coated carbide grade AH6225
• Optimised for stainless-steel turning
• 80° rhombic CCMT geometry
• 0.8 mm corner radius for precise finishing

Stable cutting performance for stainless-steel turning

The combination of a PVD finish and a specifically engineered carbide grade delivers a sharp yet resilient cutting edge suited to the typical demands of machining rostfreier Stahl. The AH6225 grade is designed for medium-duty cuts and variable conditions, which translates into consistent surface quality and reduced edge chipping under fluctuating feeds and depths. In practice, this means fewer unplanned tool changes and a steadier production flow when the material mix and cut conditions vary.

Geometry and chip control that boost productivity

An 80° rhombic geometry provides a versatile profile for both external and internal turning operations, enabling secure engagement and predictable chip formation. The single-sided chipbreaker supports controlled swarf evacuation in common stainless-steel applications, reducing re-cutting and machine downtime. The 0.8 mm corner radius helps achieve fine contours and enhances edge strength for finishing passes, while the cylindrical hole with single-side countersink ensures reliable clamping and repeatable seating in compatible holders.

Coating and grade explained for longer tool life

The PVD coating on this insert reduces flank wear and improves thermal resistance at the cutting edge, prolonging effective tool life compared with uncoated grades in similar conditions. The AH6225 formulation balances toughness and hardness to maintain a sharp edge without sacrificing fracture resistance, especially important when intermittent cuts or varying workpiece stiffness are present. For machinists seeking predictable performance, the coated grade facilitates higher mean metal removal rates before regrinding or replacement is required.

Compatibility guidance and workshop advantages

This insert is part of the ISO turning insert family and will function as intended only when paired with a suitably specified holder: form, relief angle, tolerance class, clamping method, size and thickness determine compatibility. The 4.76 mm plate thickness and ISO 120408 designation are standardised cues for selecting matching external holders or boring bars. Using standardised components reduces setup time and inventory complexity, improving workshop throughput and enabling faster tool changes with consistent repeatability.

Contact Metav Werkzeuge for tailored guidance on mounting options and to confirm holder compatibility for the Tungaloy CCMT120408 AH6225 turning insert

Technical data

• Article number: 6903260
• Manufacturer SKU: TUN6903260
• SKU: 6903260-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• Designation: CCMT120408 AH6225
• Brand: Tungaloy

Core specifications

• Corner radius: 0.8 mm
• Plate thickness: 4.76 mm
• Plate size: 12 mm
• Geometry angle: 80°
• Relief angle: 7°
• ISO code: 120408
• Countersink angle: 40°–60°

Features and materials

• Coating: PVD-coated
• Material: Carbide
• Plate form: Rhombic
• Hole: Cylindrical hole with single-side countersink
• Chipbreaker: Single-sided
• Application: Turning
• Grade: AH6225 — universal for rostfreier Stahl
• Compatibility determined by form, relief angle, tolerance class, clamping, size and thickness

FAQ

What materials is this insert designed for?
The CCMT120408 AH6225 insert is formulated as a universal grade primarily for rostfreier Stahl (stainless steel) machining, offering a balance of edge sharpness and stability for medium cutting conditions.

How does the PVD coating affect tool life?
The PVD coating on the Tungaloy AH6225 insert increases thermal resistance and reduces flank wear, which typically extends usable tool life compared with uncoated carbide in similar operations.

Which holders are compatible with ISO 120408 inserts?
Compatibility depends on holder form, relief angle, tolerance class, clamping method, size and thickness; check that the external holder or boring bar matches the ISO 120408 format and 4.76 mm thickness for correct seating.

Can the insert be used for both external and internal turning?
Yes — the 80° rhombic geometry and single-sided chipbreaker make the insert suitable for both external and internal turning applications when the correct holder is used.

What does the 0.8 mm corner radius mean for finishing?
A 0.8 mm corner radius provides a compromise between strength and the ability to produce fine surface finishes, making it suitable for light finishing passes while maintaining edge robustness.

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.