SNMG 120408 AH905 Wendeplatten - Tungaloy

Take advantage of the combination of PVD‑coated carbide grade AH905, a precise 0.8 mm corner radius and an ISO‑standard form for reliable turning performance. Order the insert via Metav Werkzeuge or consult our advisors for application-specific recommendations.

SNMG120408 AH905 SNMG turning insert for Drehen by Tungaloy

SNMG120408 AH905 Tungaloy insert is an ISO‑standard square turning insert designed for external and internal turning, offering a sharp cutting edge and high process security.

• PVD‑coated carbide grade AH905 for wear resistance
• 0.8 mm corner radius for accurate edge profiling
• Double‑sided chipbreaker for versatile turning
• Square 12 mm size, cylindrical hole, 90° orientation

High wear resistance and consistent cut quality for heavy use

The AH905 grade is a PVD‑coated carbide designed to deliver wear resistance and resistance to edge breakout under continuous production conditions. The coating reduces friction and thermal load at the cutting edge, so the insert keeps a sharp cutting geometry for longer periods. In practical terms, this improves dimensional stability and lowers the frequency of tool changes, which contributes to predictable cycle times and reduced process downtime.

Clear guidance on holder compatibility and secure clamping

These inserts conform to ISO dimensions; compatibility with a turning holder is therefore determined by the insert form, relief angle, tolerance class, fastening method, size and thickness. The plate features a cylindrical hole and a 0° relief, so it is intended for holders that accept ISO SNMG plates with a central locating pin or screw. The double‑sided chipbreaker and square format allow two indexed cutting edges per side, and the system should be clamped with the correct torque to ensure repeatable seating and stable cutting forces.

Practical productivity improvements from insert geometry

A 0.8 mm corner radius is suited to finishing and light to medium roughing where close profile control and surface finish matter. The square 12 mm plate offers a robust contact area, and the double‑sided configuration effectively doubles the number of usable edges compared with single‑edged alternatives, improving tool‑cost efficiency. Stable chip formation and the matched chipbreaker geometry reduce rework and typically permit higher feed rates or longer uninterrupted runs when matched to appropriate process parameters.

Contact Metav Werkzeuge for tailored advice on selecting the Tungaloy SNMG120408 AH905 insert for high process security — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6859301-Tungaloy
• Manufacturer item number: 6859301
• Manufacturer SKU: TUN6859301
• Model series: ISO‑Drehwendeschneidplatten
• Material: Hartmetall

Numbers / Core technical data

• ISO designation: SNMG120408
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Corner radius: 0.8 mm
• Relief angle: 0°
• Angle: 90°

Designs / Special features

• Grade: AH905 (PVD‑coated carbide)
• Double‑sided chipbreaker
• Square plate with cylindrical hole
• For external and internal turning applications

FAQ

What materials is this insert designed to machine?
The SNMG120408 AH905 insert is a PVD‑coated carbide grade optimised for robust performance across a wide range of steels and common engineering materials; select the chipbreaker and cutting data to match the specific workpiece material.

How many cutting edges are available per insert?
Due to the square, double‑sided design of the SNMG120408 AH905 turning insert, multiple indexings are possible, which increases the number of usable edges and improves cost efficiency.

Which holder type is required for this ISO insert?
The insert requires an ISO SNMG‑compatible holder with a locating feature for a cylindrical hole and suitable clamping for plates with a 4.76 mm thickness and 0° relief.

Can the AH905 grade be used for interrupted cuts?
The AH905 PVD‑coated carbide grade is designed to be resistant to wear and edge breakout, making it suitable for many interrupted‑cut scenarios when combined with appropriate cutting parameters.

How does the 0.8 mm corner radius affect surface finish?
A 0.8 mm corner radius provides a balance between strength and surface finish: it supports accurate profile control and a good surface quality while maintaining edge robustness for longer tool life.

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.