SCMT120408-MK4 WKK10S WKK10S Wendeplatten - Walter Tools

Reliable wear resistance from the Tiger·tec Silver grade and stable chip control from the MK4 breaker combine to deliver consistent performance in cast iron turning. The square 90° geometry with a 0.8 mm corner radius enhances process stability and repeatability. Order the SCMT120408-MK4 WKK10S directly via Metav Werkzeuge or consult our specialists for optimisation assistance.

SCMT120408-MK4 WKK10S – Square 90° indexable insert, Tiger·tec Silver, MK4 chipbreaker (Walter Tools)

The SCMT120408-MK4 WKK10S is a square indexable insert designed for turning and light boring operations, optimised for machining cast iron with a coated carbide grade that prioritises abrasion resistance.

• Tiger·tec Silver coating for high wear resistance
• Optimised for cast iron machining (ISO K)
• Square 90° insert, 12 mm cutting size
• MK4 chipbreaker for reliable chip control

Stable chip control for abrasive materials

The combination of the MK4 chipbreaker and the Tiger·tec Silver coating yields consistent chip formation when machining abrasive cast iron grades. The chipbreaker geometry controls short, breaking chips typical of these materials, reducing the risk of built-up edge and interrupted cutting. As a result, the machining process runs with fewer interruptions and predictable tool-life, which supports higher uptime on production lines and less tool change frequency.

Geometry engineered for reproducible results

A square 90° form with a 0.8 mm corner radius provides a balance between edge strength and cutting performance. The insert’s 12 mm size and the 7° clearance angle contribute to stable cutting engagement and defined contact conditions, translating into even wear distribution and improved dimensional consistency on turned components. The tolerance class M ensures reproducible seating and repeatable clamping accuracy in toolholders.

Coating and grade tuned for productivity

The WKK10S grade is a coated carbide developed within the Tiger·tec Silver family for operations on cast iron. Its surface technology increases abrasion resistance and preserves the cutting edge under high thermal and mechanical loads. For production environments, this means fewer interruptions for tool replacement and a favourable cost-per-part ratio when compared to uncoated grades. The grade’s design addresses the short, brittle chips and abrasive wear typical of grey and nodular cast irons.

Application scope and practical handling

This insert is intended for turning and related boring tasks on cast iron workpieces (material group K). The insert’s design supports stable roughing and finishing passes where controlled chip breaking and predictable flank wear are priorities. Indexable inserts of this type are compatible with standard square 90° toolholders; correct seating and the use of recommended cutting parameters enhance performance and life expectancy. For specific cutting data, machine compatibility or application scenarios, technical advice is available to align the component’s properties with production requirements.

Contact Metav Werkzeuge for tailored application support and to secure the right Walter Tools SCMT120408-MK4 WKK10S configuration for efficient cast iron machining

Technical data

• SKU: SCMT120408-MK4-WKK10S-WALTER
• Article designation: SCMT120408-MK4 WKK10S
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver
• Grade: WKK10S

Data

• Insert size: 12 mm
• Corner radius: 0.8 mm
• Clearance angle: 7°
• Thickness code: 04
• Tolerance class: M

Special features

• Chipbreaker: MK4
• Plate form: Square 90°
• Coating: Tiger·tec Silver (coated carbide)
• Material group suitability: Cast iron (ISO K)
• Execution: T

FAQ

What materials is this insert best suited for?
The SCMT120408-MK4 WKK10S insert is optimised for machining cast iron (ISO K) thanks to its WKK10S grade and Tiger·tec Silver coating, which resist abrasive wear.

How does the MK4 chipbreaker improve turning operations?
The MK4 chipbreaker on this Walter Tools insert promotes short, controllable chips when turning cast iron, improving process reliability and reducing downtime for chip management.

What does the 0.8 mm corner radius mean for component finish?
A 0.8 mm corner radius provides increased edge strength while allowing good surface finish and dimensional control during turning; the result is stable cutting with reduced chipping on edges.

Is this insert compatible with standard square toolholders?
Yes, the square 90° shape and the SCMT designation match common square 90° toolholders; correct clamping and the tolerance class M support predictable seating.

Can the SCMT120408-MK4 WKK10S be used for finishing and roughing?
The insert’s combination of geometry and coated grade supports both finishing and robust roughing passes on cast iron, depending on chosen feed and speed parameters.

Where can one get recommended cutting data for specific cast iron grades?
Cutting data and process parameters for the SCMT120408-MK4 WKK10S are available through Metav Werkzeuge to match machine capability and workpiece specifications.

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

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