SCMT09T304-MK4 WKK10S WKK10S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Silver grade, an MK4 chipbreaker and a 0.4 mm corner radius to achieve predictable, productive results when machining cast iron; order the SCMT09T304-MK4 WKK10S directly via Metav Werkzeuge or consult our technical team for process recommendations.

SCMT09T304-MK4 WKK10S — Square 90° turning insert, Tiger‑tec Silver grade, for cast iron (Walter Tools)

SCMT09T304-MK4 WKK10S is a square 90° indexable turning insert designed for productive machining of cast iron components, featuring an MK4 chipbreaker and a coated carbide grade optimised for abrasive grey and nodular cast irons.

• Tiger‑tec Silver coated carbide grade WKK10S
• Optimised for cast iron (ISO group K)
• MK4 chipbreaker for consistent chip control
• Square 90° geometry with 0.4 mm corner radius

Durable grade for abrasive cast iron machining

The insert uses the Tiger‑tec Silver programme and the WKK10S grade, a coated carbide designed specifically for the demands of cast iron workpieces. This combination increases wear resistance under the abrasive conditions typical of cast materials and improves tool life in series production. Coating technology reduces flank wear and supports repeatable component quality, while the grade formulation is balanced to handle short, brittle chips that commonly form when turning cast iron. The result is a robust cutting edge that maintains performance over longer tool cycles, raising productivity in batch and continuous operations.

Predictable chip control and reduced rework

Equipped with the MK4 chipbreaker, the insert promotes stable chip formation and controlled evacuation during turning. A well-matched chipbreaker reduces the risk of long, entangling swarf, protects the workpiece surface and helps avoid interruptions at the machine. The chip control geometry is particularly effective when combined with the insert’s grade for cast iron, delivering consistent swarf behaviour and fewer secondary operations. For manufacturing environments where uptime and surface integrity are priorities, this insert supports reliable process results and lower scrap rates.

Geometry that balances strength and versatility

The square 90° shape with a 0.4 mm corner radius and 7° clearance provides a compromise between rigidity and finish capability: the larger corner angle increases edge strength for interrupted cuts and heavier depth of cut, while the moderate radius supports acceptable surface quality without sacrificing durability. The T3 thickness and insert format 09 give predictable seating in standard toolholders and stable clamping. This geometry is suitable for medium to roughing cuts in cast iron components and can also be adapted for semi‑finishing where a balance of productivity and dimensional control is required.

Practical application advice for process reliability

As an indexable solution, the insert integrates into common turning toolholders without special setup and is suited to batch and continuous production of cast iron parts. The WKK10S grade prioritises process security in abrasive materials, making it appropriate for finishing and higher‑productivity roughing operations where stable cutting forces and repeatable tool life are needed. When selecting cutting parameters, focus on steady feed and adequate coolant or air blast to assist chip evacuation; the combination of Tiger‑tec Silver coating and MK4 geometry will help maintain a consistent surface finish and long edge life in typical cast iron machining scenarios.

For tailored application support or to request SCMT09T304-MK4 WKK10S inserts from Walter Tools, contact Metav Werkzeuge for technical advice and order coordination

Technical data

• Article number: SCMT09T304-MK4-WKK10S-WALTER
• SKU: SCMT09T304-MK4-WKK10S-WALTER
• Designation: SCMT09T304-MK4 WKK10S

Facts

• Insert shape: Square 90°
• Corner radius: 0.4 mm
• Clearance (relief) angle: 7°
• Thickness: T3
• Insert size: 09
• Chipbreaker: MK4
• Tolerance class: M

Special features

• Series: Tiger‑tec Silver
• Grade: WKK10S (coated carbide)
• Application: Cast iron (ISO group K)
• Suitable for short, broken chips typical of cast materials
• Manufacturer: Walter Tools

FAQ

What materials is this insert designed for?
The SCMT09T304-MK4 WKK10S is formulated for machining cast iron (ISO group K); the WKK10S grade and coating are adapted to abrasive cast materials.

How does the MK4 chipbreaker affect machining?
The MK4 chipbreaker promotes controlled chip formation and evacuation, reducing the risk of long swarf and improving surface integrity when turning cast iron with this turning insert.

Can the insert be used for interrupted cuts?
Yes, the square 90° geometry and a 0.4 mm corner radius provide robustness that is advantageous for interrupted cuts and heavier engagement in cast iron applications.

Is this insert compatible with standard toolholders?
The SCMT09T304-MK4 format fits conventional indexable turning toolholders designed for square 90° inserts; correct seating and secure clamping are recommended for repeatable performance.

How does the Tiger‑tec Silver series improve process reliability?
The Tiger‑tec Silver coating improves wear resistance and edge protection in abrasive materials, delivering more consistent tool life and fewer interruptions in cast iron turning.

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

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