SPMT 120404 T9225 Wendeplatten - Tungaloy

Take advantage of the combination of high toughness, reliable chip control and ISO compatibility for uninterrupted turning operations; order the insert via Metav Werkzeuge or consult the team for matching holders and clamping sets.

SPMT 120404 T9225 turning insert by Tungaloy — CVD-coated carbide, 11° clearance

A SPMT120404 T9225 indexable turning insert designed for medium-to-heavy steel turning, featuring a square 12 mm form with a 0.4 mm corner radius and a single-sided chipbreaker

• CVD-coated carbide T9225 grade
• ISO SPMT 120404 square insert, 12 mm
• 0.4 mm corner radius for robust engagement
• 11° clearance angle, with locating hole

Consistent tool life and chip control for robust steel turning

The CVD-coated carbide grade T9225 delivers a balance of hardness and toughness appropriate for medium-to-heavy steel machining. This composition supports stable cutting under varying engagement and intermittent cuts, reducing the risk of premature edge failure and extending productive tool life. The coating reduces flank wear and improves thermal resistance, so cycle times can be sustained without frequent indexing. As a result, process reliability increases and tool-change frequency decreases, contributing to lower machining costs per component.

Simple integration into ISO tooling systems for fast changeover

Built to ISO dimensions, the SPMT120404 format ensures straightforward compatibility with standard external holders and boring bars; compatibility is determined by form, clearance angle, tolerance class, fixing method, size and thickness. The square 12 mm shape and the central hole with cylindrical bore plus a one-sided countersink make clamping and orientation unambiguous, enabling repeatable seating and secure fixation. With an 11° clearance and a plate thickness of 4.76 mm, the insert meets common holder geometries, simplifying stocking decisions and reducing setup time across series-production runs.

Application advice and explainers for confident selection

The single one-sided chipbreaker and a 0.4 mm corner radius are tailored for robust turning where chip control and edge strength matter; the breaker geometry aids swarf formation and evacuation in steel workpieces, lowering the risk of built-up edge. The term CVD-coated refers to a chemical vapour deposition layer that enhances surface hardness and wear resistance while retaining the substrate toughness of the carbide body. For roughing, the geometry gives stability and tolerance to variable cuts; for semi-finishing, the same grade offers a compromise between life and surface quality. For special tasks or unusual material mixes, select the chipbreaker and grade in line with cutting forces and fixture rigidity.

For application-specific recommendations on the Tungaloy SPMT120404 T9225 insert, contact Metav Werkzeuge — Metav Werkzeuge GmbH can advise on holder compatibility and matching shim/screw sets via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6781035

• Manufacturer SKU: TUN6781035

• SKU: 6781035-Tungaloy

• Model series: ISO-Drehwendeschneidplatten

• Insert designation: SPMT120404

• Grade: T9225

• Material: Hartmetall

• Coating: CVD

Facts

• Insert size: 12 mm

• Plate thickness: 4.76 mm

• Corner radius: 0.4 mm

• Clearance angle: 11°

• Included hole: cylindrical hole + one-sided countersink (40°–60°)

Special features

• Square plate form

• One-sided chipbreaker

• ISO-compatible indexable insert

• Designed for medium-to-heavy Stahl machining

• System components: insert, matching external holder or boring bar, shim/clamp set and replacement screws

FAQ

What materials is this insert suitable for?
The Tungaloy SPMT120404 T9225 insert is intended primarily for Stahl (steel) machining in medium-to-heavy cutting conditions and is optimised for situations that require additional toughness during interrupted cuts.

How does the T9225 grade affect machining performance?
The T9225 CVD-coated carbide offers a balanced combination of wear resistance and edge toughness; this results in longer tool life under variable engagement and better resistance to thermal and mechanical shock.

Is the insert compatible with standard ISO holders?
Yes — the SPMT120404 format follows ISO dimensions; compatibility depends on holder form, clearance angle, tolerance class, fixing method, size and thickness, so matching the holder geometry is recommended.

What role does the one-sided chipbreaker play?
The one-sided chipbreaker improves chip formation and evacuation during turning, especially in Stahl machining, reducing the likelihood of tangled swarf and supporting more consistent surface finishes.

Which operations are best suited to this insert geometry?
The plate’s square form and 0.4 mm corner radius are appropriate for general turning tasks, including roughing and semi-finishing where robustness and controlled chip flow are priorities.

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.