CNMG 120404 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of a sharp, stable cutting edge, ISO compatibility and economical double-sided use for efficient turning of rostfreier Stahl. Order the insert directly via Metav Werkzeuge or consult the technical team for material-specific recommendations.

CNMG 120404 AH6225 turning insert — PVD-coated carbide, 0.4 mm radius (Tungaloy)

A CNMG 120404 AH6225 ISO-compliant turning insert designed for external and internal machining, optimised for medium-duty operations on rostfreier Stahl.

• ISO-compliant rhombic insert
• PVD-coated carbide grade AH6225
• Optimised for rostfreier Stahl
• Double-sided chipbreaker
• Cylindrical hole for secure clamping

Precision and consistent cutting performance for rostfreier Stahl

The insert combines a PVD-coated carbide substrate with the AH6225 grade to deliver a sharp yet stable cutting edge, specifically balanced for machining rostfreier Stahl under varying conditions. The coating improves surface hardness and wear resistance, which leads to longer edge life and more predictable tool changes. The ISO designation and standard geometry ensure interchangeability with holders that match the insert form, relief angle and tolerance class, so process reliability is increased and setup time is reduced. This results in steady surface finish and consistent dimensional results in serial production.

Secure clamping and versatile geometry reduce downtime

The rhombic plate form with a cylindrical hole and an 80° approach angle provides stable seating and repeatable positioning in matched external holders or boring bars. With a plate thickness of 4.76 mm and a corner radius of 0.4 mm, the insert is suitable for a range of turning passes where a fine compromise between edge strength and cutting precision is required. The double-sided design allows one insert to be indexed twice, improving cost-efficiency per edge and reducing the frequency of tool changes, which supports uninterrupted machining cycles.

Practical efficiency: wear resistance and predictable chip control

The integrated double-sided chipbreaker and the AH6225 grade are configured to manage chip formation during both external and internal turning. Clear chip control lowers the risk of re-cutting and machine stoppages; the PVD finish contributes to reduced built-up edge and thermal wear. For operations where medium cutting parameters and alternating conditions are present, this insert provides a reliable performance profile that pays off through fewer interventions, consistent surface quality and longer effective tool life.

Application advice and process alignment for best results

Compatibility depends on matching holder geometry, clearance angle, tolerance class, fixing method, size and thickness; therefore, selection of the chipbreaker and grade should correspond to the workpiece material and machining stability. For less experienced process planners, choosing the correct insert geometry for a given feed and depth of cut helps to avoid premature wear or chipping. Technical consultants can advise on cutting data, suitable holder types and expected tool life based on the intended operation and machine dynamics.

For precision turning tasks on rostfreier Stahl, specify the Tungaloy AH6225 CNMG 120404 insert via Metav Werkzeuge—contact info@metav-werkzeuge.com or telephone +49 2822 7131930 for availability and tailored technical advice.

Technical data

• Article number: 6946658

• Manufacturer SKU: TUN6946658

• SKU: 6946658-Tungaloy

• Model series: ISO-Drehwendeschneidplatten

• Designation: CNMG120404 AH6225

• Material: Carbide

• Coating/grade: PVD-coated AH6225

• Plate form: rhombic

• Plate size: 12

• Plate thickness: 4.76 mm

• Corner radius: 0.4 mm

• Relief angle: 0°

• Approach angle: 80°

• Hole: with cylindrical hole

• Chipbreaker: double-sided

Facts

• Angle: 80°

• Size: 12 mm

• Thickness: 4.76 mm

• Corner radius: 0.4 mm

• Relief angle: 0°

• Double-sided usable edges: yes

Special features

• ISO CNMG 120404 geometry

• PVD-coated carbide for wear resistance

• Optimised for rostfreier Stahl machining

• Rhombic shape for external and internal turning

• Cylindrical hole for positive clamping

• Grade AH6225 for a sharp, stable edge

FAQ

What materials is this insert suitable for? The CNMG 120404 AH6225 insert is optimised for machining rostfreier Stahl and performs well when a balance of sharpness and edge stability is required.

How does the AH6225 grade affect tool life? AH6225 is a PVD-coated carbide grade that increases wear resistance and thermal stability, which typically extends edge life and reduces the frequency of replacements for this type of insert.

Can the insert be used on both external and internal turning applications? Yes, the rhombic CNMG geometry and the double-sided chipbreaker make this insert suitable for both external and internal turning when paired with a compatible holder.

What are the advantages of the cylindrical hole design? The cylindrical hole ensures secure, repeatable clamping in the pocket, improving positional stability and minimising the risk of movement during heavier cuts.

How many indexable edges are available per insert? The insert is double-sided, offering two usable edges; correct indexing and seat condition will ensure reliable performance for each edge.

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.