SNMG120412-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Benefit from the combination of the Tiger·tec Silver coating and the MK5 chipbreaker for dependable, efficient cast iron turning; the result is consistent tool life and predictable chip formation. Order the SNMG120412-MK5 WKK20S directly via Metav Werkzeuge or consult our specialists for process optimisation.

SNMG120412-MK5 WKK20S — Indexable turning insert, Tiger·tec Silver, for cast iron by Walter Tools

The SNMG120412-MK5 WKK20S is a square 90° indexable insert engineered for productive cast iron turning, combining a coated carbide grade with a dedicated chipbreaker for controlled machining.

• Tiger·tec Silver coating for wear resistance
• Optimised for cast iron machining
• MK5 chipbreaker for controlled chips

Productivity and economy in cast iron machining

The insert delivers measurable benefits for series production: the WKK20S grade, part of the Tiger·tec Silver family, is a coated carbide designed specifically for machining cast iron. This composition balances abrasive wear resistance with sufficient toughness, translating into extended tool life and fewer interruptions for tool changes. Process planners will appreciate the consistent cutting behaviour, which supports stable cycle times and reduces scrap rates thanks to reliable edge retention.

Controlled chip formation and edge performance

Equipped with an MK5 chipbreaker, the insert promotes predictable chip formation when cutting cast iron, which eases chip evacuation and improves surface quality. The geometry—square 90° form with a 1.2 mm corner radius and a 0° negative relief angle—is configured for robust turning operations where repeatable performance matters. In workshop practice this means reduced downtime for chip clearing and a lower likelihood of unexpected tool fracture under typical cast iron cutting conditions.

Practical benefits for shop-floor integration

The cartridge-like format of this indexable trading unit and its standard SNMG designation allow straightforward integration into existing toolholders and fixture inventories. The plate size of 12 mm and thickness code 04 follow common tooling standards, easing logistics and reordering. Production engineers seeking a balance of productivity and process stability will find the combination of Tiger·tec Silver coating and the MK5 breaker particularly effective for abrasive, short-chip behaviour encountered with many grey and nodular cast irons.

Contact Metav Werkzeuge today for tailored advice on implementing the SNMG120412-MK5 WKK20S in production — email info@metav-werkzeuge.com or call +49 2822 7131930 to discuss suitability and delivery options

Technical data

• Article number: SNMG120412-MK5-WKK20S-WALTER
• Designation: SNMG120412-MK5
• ISO designation: SNMG120412-MK5 WKK20S
• Manufacturer: Walter Tools

Facts

• Corner radius: 1.2 mm
• Plate size: 12 mm
• Relief angle: 0° (negative)
• Plate form: Square 90°
• Thickness code: 04
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WKK20S (coated carbide)
• Chipbreaker: MK5
• Suited for: Cast iron machining
• Execution: G
• Material code: K

FAQ

What materials is this insert designed for?
The SNMG120412-MK5 WKK20S from Walter Tools is specifically formulated for machining cast iron (ISO group K), making it suitable for grey and nodular cast irons where abrasive wear and short, breaking chips are common.

What does the WKK20S grade mean in practice?
WKK20S is a Walter grade in the Tiger·tec Silver family; it denotes a coated carbide optimised for cast iron with an emphasis on wear resistance combined with sufficient toughness for reliable performance.

How does the MK5 chipbreaker influence machining?
The MK5 chipbreaker on this indexable turning insert promotes controlled chip formation in cast iron; this improves chip evacuation and contributes to stable surface finish and tool life during turning operations.

Is the insert compatible with standard SNMG toolholders?
Yes, the SNMG120412-MK5 WKK20S follows the SNMG designation and square 90° form, allowing use in standard holders designed for SNMG inserts, subject to correct clamping and turning parameters.

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 trade names are mentioned for explanatory purposes only. There is no connection between our company and the referenced brands. The offered item is original, brand-new goods from the manufacturer.