TPMT090204-MK4 WKK20S WKK20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, the WKK20S carbide grade and the MK4 chipbreaker for reliable chip control and long tool life when machining cast iron; order the TPMT090204-MK4 WKK20S indexable turning insert directly via Metav Werkzeuge or ask our consultants if needed.

TPMT090204-MK4 WKK20S indexable turning insert — Tiger·tec Silver, Triangle 60° | Walter Tools

A TPMT090204-MK4 WKK20S indexable turning insert engineered for efficient, abrasion‑resistant machining of cast iron components

• Tiger·tec Silver coated carbide WKK20S
• Optimised MK4 chipbreaker for cast iron
• Triangle 60° geometry with 0.4 mm nose radius

Consistent chip control for productive turning

The combination of the MK4 chipbreaker and the WKK20S grade provides stable, predictable chip formation when facing the typical brittle, abrasive behaviour of cast iron. This results in reduced machine downtime and a higher net material removal rate. The chipformer is designed to break short, segmented chips and to evacuate them reliably, lowering the risk of surface defects and operator intervention. By selecting a coated carbide grade tailored for cast iron, the insert supports longer edge life under intermittent cutting conditions and abrasive wear, which translates directly into a more economical production cycle and fewer tool changes.

Geometry and coating explained for better results

The insert’s triangle 60° shape and 0.4 mm nose radius make it a versatile choice for general turning and profiling tasks where a compromise between edge strength and detail is required. The 11° clearance angle reduces rubbing on the flank and helps maintain surface finish while the coated substrate from the Tiger·tec Silver family enhances thermal resistance and wear protection. For customers unfamiliar with the terminology: a smaller nose radius improves dimensional accuracy on fine features, whereas a more robust radius favours stability and longer life. The coated carbide construction offers a balance of toughness and hardness specifically tuned to cope with the abrasive nature of cast iron.

Practical selection, compatibility and after‑sales guidance

This insert is supplied in the ISO designation TPMT090204-MK4 WKK20S and matches toolholders designed for TPMT inserts with triangular form. Selection should be based on the workpiece grade, depth of cut and cutting speed; for cast iron applications, the WKK20S grade is optimised for abrasion resistance and repeatable performance. For assistance with speed and feed recommendations, or to confirm compatibility with a specific holder, Metav Werkzeuge provides application support. Sind Sie sich nicht sicher, ob dieses Werkzeug Ihre Anforderungen erfüllt? Or need additional technical data? Contact Metav Werkzeuge: info@metav-werkzeuge.com • +49 2822 7131930 — advice is available to ensure a correct and productive tool choice.

Contact Metav Werkzeuge today for application advice on Walter Tools TPMT090204-MK4 WKK20S and to arrange supply or technical consultation

Technical data

• Article number / SKU: TPMT090204-MK4-WKK20S-WALTER
• Label: Drehwendeschneidplatte TPMT090204-MK4 WKK20S Walter Tools
• Product type: indexable turning insert
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver

Facts

• Clearance angle: 11°
• Nose radius: 0.4 mm
• Insert form: Triangle 60°
• Plate size: 09
• Plate thickness: 02
• Tolerance class: M

Special features

• Grade: WKK20S (coated carbide)
• Chipbreaker: MK4, optimised for cast iron
• Application: suitable for cast iron machining
• Execution: T

FAQ

What materials is this insert suitable for?
The TPMT090204-MK4 WKK20S insert is specifically designed for machining cast iron, with the WKK20S grade tuned for abrasive wear and short, breaking chips.

Can the insert be used in existing TPMT toolholders?
Yes, the insert follows the TPMT ISO designation and fits toolholders made for TPMT triangular inserts; ensure the holder supports a 60° triangle form.

How does the MK4 chipbreaker affect cutting parameters?
The MK4 chipbreaker promotes short chip formation, enabling safer chip evacuation and often allowing higher feed rates in cast iron applications while maintaining surface quality.

Is Tiger·tec Silver a coating or a substrate technology?
Tiger·tec Silver denotes a coated carbide technology providing enhanced thermal and wear resistance compared with uncoated grades, improving tool life in abrasive materials.

What inspection should be done before first use?
Check insert seating and clamp torque in the toolholder, confirm nose radius and orientation, and verify cutting parameters recommended for cast iron to avoid unexpected tool wear.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and protected product names are mentioned for explanatory purposes only. There is no connection between our company and the named brands. The offered item is an original, factory‑new product of the manufacturer Walter Tools.