SCMT09T308-MK4 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of reliable chip control, optimized wear resistance and straightforward indexable design for efficient cast iron turning; order Walter Tools inserts via Metav Werkzeuge or consult our specialists for application advice.

SCMT09T308-MK4 WKK20S turning insert for cast iron, square 90° — Walter Tools

A SCMT09T308-MK4 WKK20S indexable turning insert engineered for productive cast iron machining with Tiger·tec Silver coating.

• Tiger·tec Silver coated grade WKK20S
• Optimised for cast iron (ISO group K)
• Square 90° geometry, 0.8 mm corner radius
• MK4 chipbreaker for reliable chip control

Boosted productivity for abrasive cast iron work

The insert combines a Tiger·tec Silver coating with the WKK20S grade to deliver improved wear resistance specifically for cast iron. This combination reduces flank and crater wear under the short, brittle-chip conditions typical of grey and nodular cast irons, enabling longer cutting intervals and fewer index changes. The result is a measurable increase in productivity on serial and batch turning operations, with a stable cutting behaviour that supports consistent cycle times.

Stable chip control and secure edge performance

The integrated MK4 chipbreaker is designed to shape and evacuate short chips reliably, lowering the risk of built-up edge and interrupted cuts. Coupled with the square 90° geometry and a 0.8 mm corner radius, the insert provides a robust cutting edge that tolerates interrupted cuts and secures process reliability. The moderate 7° clearance angle further supports edge strength while maintaining acceptable cutting forces, so machinists benefit from repeatable surface quality and fewer rejects.

Practical economy through easy indexing and broad applicability

As an indexable solution, the insert keeps maintenance times low and toolholding costs manageable: four usable edges reduce per-edge expenses and shorten downtime for replacements. The coated carbide substrate and chipbreaker pairing make the component versatile across standard cast iron turning tasks, from roughing to finishing passes where stable edge life and surface consistency are priorities. Specification and selection are straightforward for production planners seeking process stability and predictable tool life.

For reliable cast iron turning with Walter Tools quality, contact Metav Werkzeuge for application guidance or to order matching cutters and inserts; email info@metav-werkzeuge.com or call +49 2822 7131930 for detailed support.

Technical Data

• Article number: SCMT09T308-MK4-WKK20S-WALTER
• Designation: SCMT09T308-MK4 WKK20S
• Manufacturer: Walter Tools
• Product type: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte

Facts

• Corner radius: 0.8 mm
• Clearance angle: 7°
• Insert size: 09
• Thickness: T3
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WKK20S
• Chipbreaker: MK4
• Material application: cast iron (ISO K)
• Geometry: square 90°

FAQ

Which materials is this insert best suited for? The SCMT09T308-MK4 WKK20S insert by Walter Tools is optimised for cast iron (ISO group K) machining thanks to its Tiger·tec Silver coated carbide and chipbreaker design.

What advantages does the Tiger·tec Silver grade provide? Tiger·tec Silver in the WKK20S grade improves wear resistance and edge stability on abrasive cast iron, supporting longer service intervals and consistent surface finish during turning.

How does the MK4 chipbreaker affect performance? The MK4 chipbreaker produces short, controllable chips that reduce the likelihood of chip entanglement and built-up edge, improving process reliability for Walter Tools turning inserts.

Is the geometry suitable for interrupted cuts? Yes—the square 90° form with a 0.8 mm corner radius and 7° clearance angle offers a robust edge that tolerates interrupted cuts and roughing applications.

Can this insert be used for finishing passes? The insert’s coated carbide grade and controlled chip formation permit use in finishing operations where stable tool life and repeatable surface quality are required.

Walter Tools: Manufacturer/Responsible: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen