SCMW120404-RK6 WKK20S Wendeplatten - Walter Tools

Benefit from the wear‑resistant Tiger·tec Silver grade, the RK6 chipbreaker for controlled short chips and the compact 90° square format with a 0.4 mm corner radius for reproducible turning results. Order the insert directly via Metav Werkzeuge or consult our specialists for application support.

SCMW120404-RK6 WKK20S Walter Tools — Indexable turning insert with Tiger·tec Silver for cast iron, RK6 chipbreaker

SCMW120404-RK6 WKK20S Walter Tools is a square indexable turning insert engineered for productive machining of cast iron, combining a coated carbide grade with a chipbreaker geometry optimised for short, controllable chips.

• Tiger·tec Silver coated carbide
• Optimised for cast iron (ISO K)
• RK6 chipbreaker for short chips
• 7° clearance angle, 0.4 mm corner

Extended tool life and predictable process economy

The combination of the Tiger·tec Silver coating and the WKK20S grade delivers pronounced wear resistance and reliable edge stability when machining abrasive cast iron. This coated cemented carbide formulation is tuned to withstand the frequently short, brittle chips typical of grey and nodular cast irons, reducing flank wear and extending tool life. As a result, cycle times remain consistent and regrinding intervals are extended, supporting a more economical production flow.

Geometry designed for secure chip control and surface quality

The RK6 chipbreaker and the square 90° format ensure controlled chip formation and evacuation, which is critical when turning cast iron. The 7° clearance angle and 0.4 mm corner radius promote a robust cutting edge that resists chipping while maintaining good surface finish. These geometric choices reduce the risk of unstable cutting forces and vibrational damage, enabling higher metal removal rates with consistent component quality.

Repeatable clamping and compatibility for series production

With the standard SCMW designation and the compact size 12 format, this insert is compatible with a wide range of common toolholders and clamping systems used in turning operations. The tolerance class M and the execution code W support predictable seating and repeatability at index changes, which minimises setup time and simplifies tool management in multi‑shift environments. The insert’s square design gives four usable cutting edges, improving cost efficiency per edge.

Application focus and process benefits

Specifically developed for the ISO group K (cast iron), this insert is suited to finishing and light‑to‑medium roughing tasks where controlled chip breaking and edge stability are required. The product supports improved process security and consistent productivity, making it a practical choice for jobbing shops and serial manufacturers alike who require robust performance on cast iron components.

Contact Metav Werkzeuge for tailored application advice and immediate availability of the Walter Tools SCMW120404-RK6 WKK20S insert via info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: SCMW120404-RK6-WKK20S-WALTER
• Short designation: SCMW120404-RK6
• Full designation: SCMW120404-RK6 WKK20S
• Manufacturer: Walter Tools
• Product type: Indexable turning insert
• Series/grade: Tiger·tec Silver, WKK20S

Numerical data

• Clearance angle: 7°
• Corner radius: 0.4 mm
• Insert size: 12
• Plate form: Square 90°
• Thickness designation: 04
• Tolerance class: M

Special features

• Coating / grade: Tiger·tec Silver, WKK20S
• Chipbreaker: RK6
• Suitable material group: Cast iron (ISO K)
• Execution: W
• Geometry: Square insert with 0.4 mm corner radius

FAQ

Which materials is this insert best suited for?
This insert is optimised for machining cast iron (ISO group K); the Walter Tools SCMW120404-RK6 WKK20S grade and Tiger·tec Silver coating are tuned for abrasive, short‑chipping cast irons.

What performance advantage does the Tiger·tec Silver coating provide?
The Tiger·tec Silver coating on the WKK20S grade increases wear resistance and thermal stability, helping the insert maintain edge life and consistent cutting performance when turning cast iron.

How does the RK6 chipbreaker affect machining?
The RK6 chipbreaker produces short, controllable chips that evacuate reliably, reducing the risk of chip entanglement and improving surface quality during interrupted or continuous cuts.

What do the 7° clearance and 0.4 mm radius mean for my process?
A 7° clearance angle reduces flank contact and heat build‑up, while a 0.4 mm corner radius delivers a durable cutting edge that balances strength with achievable surface finish.

Is the SCMW120404-RK6 compatible with standard holders?
Yes; the SCMW format and size 12 designation make the insert compatible with widely used indexable turning holders that accept square 90° inserts.

Manufacturer: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen; Germany

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