DCMT070204-MK4 WKK20S Wendeplatten - Walter Tools

Benefit from a productive combination of Tiger‑tec Silver coating and a robust WKK20S grade: the insert provides stable edge life and reliable chip control for cast iron turning, helping to maintain cycle times and surface quality. Order the DCMT070204-MK4 WKK20S insert directly via Metav Werkzeuge or ask our consultants if needed.

DCMT070204-MK4 WKK20S turning insert — Tiger‑tec Silver coating for cast iron | Walter Tools

A DCMT070204-MK4 WKK20S turning insert engineered for productive cast iron machining with a rhombic 55° geometry and MK4 chipbreaker.

• Tiger‑tec Silver coated grade WKK20S
• Optimised for cast iron (ISO group K)
• Rhombic 55° shape, 7° clearance angle
• MK4 chipbreaker for controlled short chips

Precision and productivity for cast iron turning

The DCMT070204-MK4 WKK20S insert combines a wear‑resistant coated carbide grade with a geometry tailored to cast iron, delivering stable cutting performance and predictable tool life. The WKK20S grade is part of the Tiger‑tec Silver family and is engineered to resist abrasive wear and to cope with the frequently short, breaking chips typical of grey and nodular cast iron. In production environments this translates into fewer tool changes and steadier cycle times, which supports higher throughput and improved process reliability.

Coating and edge technology that extend service intervals

A key advantage is the Tiger‑tec Silver coating technology applied to the WKK20S grade, which combines thermal and mechanical resistance to slow flank wear and maintain a sharp cutting edge under intermittent cutting conditions. The insert’s MK4 chipbreaker promotes controlled chip formation and evacuation, reducing the risk of built‑up edge and improving surface finish. With a 0.4 mm corner radius and 7° clearance angle, the geometry balances strength at the cutting edge with the ability to achieve consistent surface quality on cast iron components.

Reliable geometry and process security for production use

The rhombic 55° plate form and the specified tolerances (tolerance class M) support repeatable seatings and toolholder interchangeability on turning tool posts. The MK4 chipbreaker is particularly suited to short‑chipping cast iron applications, enabling stable parameters and safer unattended running. As the insert is designed for ISO group K materials, it is recommended where abrasive particles and fragmenting chips are expected; the combination of grade, coating and chip control improves both dimensional consistency and component appearance without complex parameter tweaking.

For robust, repeatable cast iron turning choose the Walter Tools DCMT070204-MK4 WKK20S insert — contact Metav Werkzeuge for application advice or to arrange a supply via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: DCMT070204-MK4-WKK20S-WALTER
• Designation: DCMT070204-MK4 WKK20S
• Manufacturer: Walter Tools
• Series: Tiger‑tec Silver

Facts

• Clearance angle: 7°
• Corner radius: 0.4 mm
• Plate form: Rhombus 55°
• Plate size: 07
• Plate thickness: 02
• Tolerance class: M
• Chipbreaker: MK4

Special features

• Grade: WKK20S
• Coating: Tiger‑tec Silver
• Material application: Cast iron (ISO group K)
• Execution: T
• Optimised for abrasive wear and short chips

FAQ

Which materials is this insert suited for?
The DCMT070204-MK4 WKK20S is optimised for cast iron (ISO group K), with the grade and coating engineered to manage abrasive wear and short, breaking chips commonly found in cast iron machining.

What does the WKK20S grade and Tiger‑tec Silver coating provide?
WKK20S is a coated carbide grade in the Tiger‑tec Silver family; it offers enhanced wear resistance and thermal stability for productive cutting and longer edge life when turning cast iron.

How does the MK4 chipbreaker affect cutting performance?
The MK4 chipbreaker produces controlled, short chips for safer chip evacuation and consistent surface finishes, reducing the likelihood of chip entanglement during continuous turning operations.

What are the key geometry specifications to check when fitting this insert?
Check the rhombic 55° plate form, 7° clearance angle, 0.4 mm corner radius and tolerance class M to ensure correct seating and expected machining behaviour; the SKU is DCMT070204-MK4-WKK20S-WALTER.

Protected trademarks and trade names are the property of their respective owners. Brand names are mentioned for clarification only; no affiliation between our company and the manufacturers is implied. The offered article is an original, factory‑new product of the manufacturer.

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