SCMT 120412 T9225 Wendeplatten - Tungaloy

Take advantage of a durable, CVD-coated cemented carbide grade that balances toughness and wear resistance with a compact ISO form factor. The combination of a 1.2 mm corner radius, PM chipbreaker and a 90° included angle supports stable cutting in medium to heavy steel turning; order the insert directly via Metav Werkzeuge or consult our specialists for selection advice.

SCMT 120412 T9225 SCMT – ISO turning insert for medium‑to‑heavy steel machining by Tungaloy

A SCMT120412-PM ISO‑standard turning insert designed for external and internal turning applications, offering high toughness for interrupted cuts and variable engagement conditions

• CVD-coated cemented carbide grade T9225
• Robust universal grade for medium–heavy steel
• 1.2 mm corner radius for stable cuts
• Square ISO insert with cylindrical hole

Engineered toughness for variable cutting conditions

The insert is manufactured from cemented carbide and finished with a CVD coating to combine surface hardness with core toughness. This composition—marketed as the T9225 grade—is tuned for medium to heavy steel turning where interrupted cuts or fluctuating engagement demand greater fracture resistance. The result is predictable tool life and consistent component quality under mixed production conditions.

Design features that improve process security

A 1.2 mm corner radius and a 90° included angle deliver secure edge strength and reliable load distribution at the cutting edge, which reduces the risk of chipping under heavier depth-of-cut. The Chipbreaker PM geometry is optimised for steel machining, supporting controlled chip formation and evacuation; this leads to fewer built-up edge issues and improved surface finish during steady or semi‑roughing passes.

Integration into the tool system and holder compatibility

Compatibility with toolholders is determined by insert form, relief angle, tolerance class, clamping method, size and thickness. The insert fits standard ISO holders and boring bars when the seat and clamping match the ISO form; the machining system typically comprises the insert, a suitable external holder or boring bar, the required shim/clamp set and replacement screws. This standardised approach ensures fast changeover and simplified inventory management in production environments.

Practical application guidance and productivity benefits

For external and internal turning of steels, select the T9225 grade and PM chipbreaker when a balance of wear resistance and toughness is needed. The 4.76 mm thickness and square shape give rigidity and repeatable positioning, while the central hole with a cylindrical bore and one‑sided countersink (40°–60°) provides secure mechanical clamping. These characteristics together contribute to stable cutting, reduced downtime for insert changes and predictable batch output.

For dependable steel turning with Tungaloy’s T9225 inserts, contact Metav Werkzeuge for availability and application support at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss the best insert and holder combination for the task.

Technical data

• Article number: 6781071
• Manufacturer SKU: TUN6781071
• Designation: SCMT120412-PM
• Model series: ISO-Drehwendeschneidplatten
• Grade: T9225

Facts

• Corner radius: 1.2 mm
• Plate size: 12 mm
• Plate thickness: 4.76 mm
• Included angle: 90°
• Relief angle: 7°

Special features

• Material: cemented carbide
• Coating: CVD
• Chipbreaker: PM
• Shape: square
• Hole style: cylindrical hole + single-sided countersink (40°–60°)
• Application: turning
• System components: compatible with external holders, boring bars, shim/clamp set and replacement screws

FAQ

What materials is this insert intended for? The SCMT120412-PM in T9225 is intended primarily for medium to heavy steel machining; the combination of CVD-coated cemented carbide and the PM chipbreaker supports stable cutting in these materials.

Which chipbreaker does the insert use and what is its effect? This insert features the PM chipbreaker, which promotes controlled chip formation and evacuation when turning steel, reducing built-up edge and improving surface finish when used with appropriate feeds and speeds.

How is holder compatibility ensured for this ISO insert? Holder compatibility depends on matching the ISO insert form, relief angle, tolerance class, clamping method, size and thickness; the SCMT120412-PM fits standard ISO seats when those parameters are aligned.

What are the key dimensional features to consider for setup? Key dimensions include a 1.2 mm corner radius, 12 mm plate size, 4.76 mm thickness and a 90° included angle; these determine edge strength, rigidity and the suitable holder type for reliable positioning.

Can the insert be used for interrupted cuts? Yes, the T9225 grade is a robust universal grade optimised for interrupted cuts and variable engagement conditions, offering enhanced toughness to resist chipping.

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.