SNMA 120412 T5105 Wendeplatten - Tungaloy

Take advantage of robust CVD-coated carbide and a 1.2 mm corner radius for stable, high-speed turning of cast iron; the ISO SNMA120412 geometry ensures compatibility with standard turning holders and secure clamping. Order the insert via Metav Werkzeuge or contact our consultants for application-specific advice.

SNMA120412 T5105 indexable insert for turning — square ISO insert, CVD-coated carbide, 90° geometry (Tungaloy)

SNMA120412 T5105 is an ISO-designated square indexable insert optimised for external and internal turning of cast iron under stable machining conditions.

• ISO SNMA 120412 square insert
• CVD-coated carbide grade T5105
• 1.2 mm corner radius for reliable edges
• Cylindrical hole for secure clamping

Consistent high-speed performance for cast iron turning

The SNMA120412 T5105 insert combines a CVD-coated wear-resistant carbide substrate with a square, 90° geometry, delivering steady cutting performance in high-speed operations. The T5105 grade is formulated for high cutting speeds and provides predictable wear behaviour, which translates into longer tool life and fewer insert changes. For process planners, this means reduced machine downtime and a measurable improvement in productivity when turning grey or nodular cast iron under stable setup conditions.

Compatibility and secure clamping for reliable machining

Designed to the ISO standard, the insert’s form, relief angle and dimensional tolerances ensure compatibility with widely used turning holders and boring bars. The insert features a cylindrical hole for firm screw clamping and a nominal thickness of 4.76 mm, which supports stable seating and repeatable placement. Because the fitting depends on form, clearance angle and size, selecting the correct holder geometry secures cutting stability and repeatable part accuracy during series production.

Why the CVD-coated carbide grade matters

A CVD coating on a hardmetal substrate provides a combination of hardness and thermal resistance that is particularly effective when machining abrasive materials like cast iron. The coating reduces flaking and crater wear, improving edge retention in continuous cuts at higher speeds. For engineers new to coatings: CVD (chemical vapour deposition) produces a dense, adherent layer that protects the carbide core while maintaining sharp cutting edges, which helps to preserve surface finish and dimensional stability over longer tool life.

Practical benefits for shop-floor efficiency

With a 1.2 mm corner radius, the insert balances edge strength and fine surface generation; the radius improves robustness on interrupted cuts without sacrificing finish. The absence of an integrated chipbreaker in this variant places emphasis on matching the insert geometry and grade to the workpiece material and cutting conditions—particularly feed, depth of cut and rigidity of the setup. When combined with a suitable holder, the result is increased process reliability, consistent chip control for stable cutting and fewer unscheduled tool changes, supporting cost-effective series production.

For machining applications requiring stable high-speed turning of cast iron, contact Metav Werkzeuge for selection support and order placement; email info@metav-werkzeuge.com or call +49 2822 7131930 for technical consultation and availability.

Technical data

• Article number: 6850266
• Manufacturer SKU: TUN6850266
• Model series: ISO-Drehwendeschneidplatten
• Material: carbide

Numbers / Core technical data

• ISO designation: SNMA120412
• Insert size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 1.2 mm
• Relief angle: 0°
• Included angle: 90°

Designs / Special features

• Coating: T5105 (CVD-coated)
• Suitable for: cast iron (high-speed applications)
• Insert shape: square
• Hole: with cylindrical hole
• Chipbreaker: none
• Typical use: external and internal turning

FAQ

What materials is this insert intended for?
The SNMA120412 T5105 insert is intended primarily for high-speed turning of cast iron; the T5105 CVD-coated carbide grade offers wear resistance suited to these applications.

How does the 1.2 mm corner radius affect cutting?
A 1.2 mm corner radius increases edge strength and tolerance to interruptions while maintaining a good surface finish; it is particularly useful where a compromise between robustness and fine finish is required.

Is this insert compatible with standard ISO holders?
Yes; the SNMA120412 conforms to ISO dimensions, and compatibility depends on matching the holder’s form, relief angle, tolerance class, screw fixing and insert size.

Does this variant include a chipbreaker?
This specific item does not include a chipbreaker; chip control must be achieved through process parameters and holder selection appropriate for the workpiece and cutting conditions.

What is the benefit of the T5105 coating?
The T5105 CVD coating enhances thermal resistance and edge stability during high-speed cuts, reducing wear and extending service life in demanding cast iron operations.

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.