CNMG 120404 AH6225 Wendeplatten - Tungaloy

Benefit from a combination of reliable tool life, sharp cutting geometry and consistent chip control to maintain efficient turning cycles. Choose genuine Tungaloy inserts for predictable surface quality and cost-effective machining, and contact Metav Werkzeuge for tailored advice or delivery options.

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

CNMG 120404 AH6225 Tungaloy is a rhombic ISO-indexable insert designed for general turning where a balanced compromise between edge sharpness and stability is required

• ISO CNMG120404 rhombic insert, 80° cutting angle
• PVD-coated carbide AH6225 for rostfreier Stahl
• Double-sided chipbreaker for stable chip control
• 0.4 mm nose radius for precision finishes

Consistent cutting behaviour for turning applications

The CNMG120404 AH6225 Tungaloy insert is optimised for turning operations where medium cutting conditions and variable batch requirements occur. The PVD-coated carbide substrate combines wear resistance with a sharp cutting geometry, delivering improved tool life and repeatable performance. In practice, this means more stable cycle times and fewer tool changes in mixed production runs, which supports a measurable increase in overall machining efficiency.

Clear geometry and surface-finish advantages

The rhombic plate form with an 80° cutting angle and a 0.4 mm nose radius produces a controlled contact zone at the cutting edge. This geometry reduces chatter risk on external and internal turning operations and supports fine surface finishes on components made from rostfreier Stahl. The combination of edge form and nose radius also simplifies process planning: conservative feeds produce long tool life, while modest increases in feed enable faster stock removal without a disproportionate rise in tool wear.

Secure clamping and compatibility with ISO holders

Compatibility with the toolholder is governed by plate form, relief angle, tolerance class, fastening method, size and thickness. The insert’s cylindrical hole and standard dimensions ensure straightforward mounting in compatible CNMG holders; secure clamping reduces micro-movements that can shorten edge life. Where process stability is critical, pairing the insert with a correctly rated external holder or boring bar and a matched underlay/clamping kit provides consistent mechanical support and repeatable results.

Reliable chip control and productivity gains

Equipped with a double-sided chipbreaker, the insert offers reliable chip formation across a range of feeds and depths of cut. Stable chip control lowers the likelihood of built-up edge and improves surface integrity, reducing rework and downstream inspection time. For operations that must balance productivity with finish quality, this grade and chipbreaker combination helps achieve higher material removal rates while maintaining dimensional accuracy.

Practical handling and process considerations

The plate thickness of 4.76 mm and the ISO designation simplify spare part management and inventory control. As a universal grade for rostfreier Stahl under variable conditions, the insert performs well when cutting parameters are adjusted for workpiece rigidity and tool overhang. For best results, select a matching holder geometry and check tolerance classes to ensure the insert seats correctly; this reduces vibration and preserves the intended cutting edge stability that defines its cost-effectiveness.

For personalised selection advice or to order genuine Tungaloy CNMG120404 AH6225 turning inserts, contact Metav Werkzeuge GmbH at info@metav-werkzeuge.com or by phone on +49 2822 7131930; our consultants will assist with technical details and delivery options.

Technical data

• Article number: 6903164
• Manufacturer SKU: TUN6903164
• SKU: 6903164-Tungaloy
• Model series: ISO-Drehwendeschneidplatten
• Material: Hartmetall
• Grade: AH6225
• Coating: PVD-coated carbide

Data

• Nose radius: 0.4 mm
• Plate thickness: 4.76 mm
• Inscribed circle / size: 12 mm
• Cutting angle: 80°
• Relief angle: 0°
• Hole style: cylindrical hole

Special features

• ISO designation CNMG120404
• Rhombic plate form
• Double-sided chipbreaker
• PVD-coated carbide grade for rostfreier Stahl
• Compatible with standard CNMG external holders and boring bars
• Application: Turning

FAQ

Is this insert suitable for rostfreier Stahl machining?
Yes. The AH6225 grade is formulated as a universal grade for rostfreier Stahl and provides a balance of sharpness and edge stability suitable for medium turning applications with the CNMG120404 geometry.

Which holder characteristics must be checked for compatibility?
Holder compatibility depends on plate form, relief angle, tolerance class, fastening method, size and thickness; the CNMG120404 dimensions and the cylindrical hole must match the chosen external holder or boring bar.

Can the insert be indexed to present a fresh cutting edge?
The plate is designed with a double-sided chipbreaker and can be rotated to present a fresh edge; indexing practice depends on the holder system and the chosen clamping orientation.

What advantages does the AH6225 PVD coating provide?
The PVD-coated carbide offers improved wear resistance and stable cutting-edge performance under variable conditions, supporting longer intervals between tool changes and consistent surface quality.

Is the insert supplied with mounting hardware or a holder?
The turning system comprises the ISO-indexable plate plus a matching external holder or boring bar, underlay/clamping kit and replacement screws; the insert itself is supplied as the cutting plate, while holders and clamping kits are typically ordered separately.

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.