SCMT 120404 T515 Wendeplatten - Tungaloy

The combination of a CVD‑coated carbide (T515) grade and a square ISO geometry (SCMT120404) delivers efficient, repeatable machining of cast iron with reliable chip control; the 0.4 mm corner radius and 4.76 mm plate thickness contribute to stable cutting conditions and long tool life. Order the insert directly via Metav Werkzeuge or contact our consultants for application advice.

SCMT120404 T515 Tungaloy indexable insert for turning (square, 0.4 mm radius)

SCMT120404 T515 Tungaloy is an ISO‑standard indexable insert designed for external and internal turning operations, optimised for economical machining of cast iron.

• ISO‑standard square insert for turning
• CVD‑coated carbide grade T515
• Single‑sided chipbreaker for cast iron
• 0.4 mm corner radius and 4.76 mm thickness

Robust carbide and coating for economical cast‑iron turning

The insert uses a CVD‑coated carbide matrix, identified as T515, which balances wear resistance with cost efficiency for serial production. The coating reduces adhesion and improves heat resistance during interrupted or continuous cuts, enabling higher cutting speeds compared with uncoated grades. As a result, the tool offers stable chip formation and consistent tool life when matched with appropriate cutting data and workpiece stability.

Geometry and mounting that ensure process reliability

With an ISO square form (SCMT) and a finished 0.4 mm corner radius, the insert supports both roughing and finishing passes while maintaining a low tendency for corner breakage. The plate is supplied with a central hole and a single‑side countersink (40°–60°) to ensure secure clamping and repeatable seating in compatible holders. The specified 7° relief angle and 90° cutting angle contribute to predictable cutting forces and straightforward holder selection within ISO standards.

Designed chip control and practical production benefits

The single‑sided chipbreaker is tuned for cast‑iron applications, directing chips away from the cutting zone to protect the workpiece surface and reduce the risk of recutting. This targeted chip control reduces cycle times by enabling more aggressive feed rates under stable conditions, while the moderate corner radius minimises subsurface damage and supports longer edge life. The result is a measurable improvement in throughput for workshops focusing on cast‑iron components.

Material suitability and recommended use

Manufactured from carbide, this insert is intended primarily for the economical machining of cast iron, with selection of an appropriate chipbreaker and grade determined by workpiece stability and desired cutting speed. The ISO specification and central hole design mean the insert is compatible with a wide range of external holders and boring bars, provided the holder matches form, clearance angle, tolerance class, fastening method, size and thickness. Practical selection guidance and cutting parameters are available to fine‑tune performance for specific machines and setups.

Discuss the Tungaloy SCMT120404 T515 carbide insert with Metav Werkzeuge for tailored advice on cast‑iron turning; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: 6747831

• SKU: 6747831-Tungaloy

• Manufacturer SKU: TUN6747831

• ISO designation: SCMT120404

Facts

• Plate size: 12 mm

• Plate thickness: 4.76 mm

• Corner radius: 0.4 mm

• Relief angle: 7°

• Cutting angle: 90°

Special features

• Material: carbide
• Coating/grade: T515 (CVD‑coated carbide)
• Shape: square
• Chipbreaker: single‑sided
• Hole: with cylindrical hole + one‑side countersink (40°–60°)
• Typical application: external and internal turning, cast‑iron machining

FAQ

What materials is this insert optimised for?
The SCMT120404 T515 Tungaloy insert is optimised for the economical machining of cast iron; the T515 grade and single‑sided chipbreaker provide effective chip control and wear resistance in this material class.

Which holder types are compatible with this ISO insert?
Compatibility depends on holder form, clearance angle, tolerance class, fastening method, size and thickness; the insert’s ISO square geometry and central hole make it suitable for standard external holders or boring bars designed for SCMT plates.

How does the T515 grade affect cutting performance?
The T515 CVD coating enhances heat resistance and reduces adhesion, allowing for more consistent cutting speeds and improved edge life compared with uncoated carbide when machining cast iron.

Can the insert be used for interrupted cuts?
Yes; the combination of a robust carbide substrate and the CVD coating supports interrupted cutting, though machining parameters should be adjusted for stability and shock loads to maximise tool life.

What benefits does the 0.4 mm corner radius offer?
A 0.4 mm radius provides a balance between strength and surface finish: it increases edge strength for roughing while still allowing acceptable surface quality in finishing passes, reducing the risk of corner 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.