TNMG 220408 AH6225 Wendeplatten - Tungaloy

Take advantage of the combination of PVD-coated AH6225 carbide, ISO compatibility and a 0.8 mm corner radius for consistent turning quality and stable chip control; order directly via Metav Werkzeuge or contact the technical advisors for holder compatibility and process optimisation.

TNMG TNMG220408 AH6225 Tungaloy turning insert — PVD-coated carbide, 0.8 mm radius

The TNMG220408 AH6225 is an ISO triangular turning insert designed for versatile external and internal turning, optimised for stainless steels and medium-duty operations

• PVD-coated carbide AH6225 for stainless steels
• ISO TNMG shape with 60° cutting angle
• Double-sided chipbreaker for consistent chips
• Cylindrical hole for secure clamping

Precision edge and universal grade for stable machining

The PVD coating and the AH6225 grade combine to deliver a sharp yet robust cutting edge suited to varying cutting conditions. As a universal carbide grade for stainless steels, the geometry balances wear resistance with edge stability to reduce unexpected downtime. This translates into reliable component tolerances and fewer tool changes during batch production, helping to maintain a steady production flow and lower process variability.

ISO conformity and secure clamping for predictable results

Built to the ISO designation 220408, the triangular insert seats with defined form and tolerance for consistent positioning. The 60° cutting angle and the 0° relief support predictable cutting forces, while the cylindrical hole ensures secure clamping and reduced micro-movement in the holder. The result is improved repeatability across the tool life and fewer rejects due to seating or clamping inconsistencies.

Controlled chips and surface integrity through geometry

The double-sided chipbreaker and the 0.8 mm corner radius are designed to steer chips reliably and protect the cutting edge under intermittent conditions. A well-controlled chip form reduces built-up edge and heat concentration, which in turn supports a better surface finish and extended cutting intervals. For medium turning tasks, this geometry delivers a measurable improvement in process stability and part quality.

System benefits and application guidance for turning tasks

As part of an ISO insert system, the component is intended for combination with a compatible holder, clamping set and replacement screws; correct selection of holder form, clearance angle and size is essential for optimal performance. The insert’s 4.76 mm thickness and 22 mm inscribed circle ensure a robust seat in many standard external and internal turning applications. For batch production and mixed-material workshops, the indexable, double-sided design improves economics by offering multiple cutting edges per insert.

Contact Metav Werkzeuge to discuss TNMG220408 AH6225 compatibility with existing holders or to place an order; technical advisors are available at info@metav-werkzeuge.com or by phone on +49 2822 7131930

Technical Data

• Article number: 6903215
• Manufacturer SKU: TUN6903215
• Shop SKU: 6903215-Tungaloy
• Material: Carbide
• Coating/Grade: AH6225 (PVD-coated)
• Model series: ISO turning inserts
• Application: Turning

Facts

• ISO code: 220408
• Shape: Triangular
• Inscribed circle: 22 mm
• Thickness: 4.76 mm
• Corner radius: 0.8 mm
• Cutting angle: 60°
• Relief angle: 0°
• Hole: With hole (cylindrical)
• Chipbreaker: Double-sided

Special features

• Universal grade for stainless steels
• Sharp and stable cutting edge for medium machining
• PVD coating for enhanced wear resistance
• Secure clamping via cylindrical hole
• Indexable, two usable cutting edges per side
• Designed for compatibility with ISO holders and clamping sets
• Suitable for external and internal turning operations

FAQ

What materials is this insert best suited for?
The TNMG220408 AH6225 insert is specified for machining stainless steels, offering a balanced combination of edge sharpness and wear resistance for medium-duty turning tasks.

How does the AH6225 grade affect tool life?
The AH6225 PVD-coated carbide grade promotes stable edge retention under variable conditions, which typically extends usable life compared with uncoated grades when machining stainless steels.

Which holders are compatible with this ISO insert?
Compatibility depends on holder form, clearance angle, tolerance class, fastening and size; the ISO TNMG220408 designation ensures compatibility with standard ISO TNMG holders when the seating and clamping match.

How does the 0.8 mm corner radius influence machining?
A 0.8 mm radius strengthens the cutting edge for interrupted cuts and improves surface finish compared with larger radii, while maintaining acceptable cutting forces for medium turning.

Is the chip control suitable for automated production?
Yes, the double-sided chipbreaker provides consistent chip form, reducing the risk of entanglement or unexpected evacuation issues in automated or high-volume environments.

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.