DNMG150412-MK5 WKK20S WKK20S Wendeplatten - Walter Tools

Combine the Tiger·tec Silver coating with the MK5 chipbreaker for reliable cast-iron machining and benefit from the robust 0° negative rake for stable cutting performance; order the genuine parts via Metav Werkzeuge or consult our specialists for application-specific advice.

DNMG150412-MK5 WKK20S — indexable turning insert for cast iron (Walter Tools)

A DNMG150412-MK5 WKK20S indexable insert designed for efficient and controlled machining of cast iron, part of the Tiger·tec Silver series.

• Tiger·tec Silver coating for wear resistance
• MK5 chipbreaker tuned for cast iron
• Rhombic 55° geometry for versatile turning
• 0° negative rake for robust cutting

Consistent wear resistance for abrasive cast-iron work

The combination of the WKK20S grade and Tiger·tec Silver technology is developed to resist the abrasive wear typical of cast-iron machining. This coated carbide formulation is tuned for short, brittle chips and frequent chip breakage, which reduces built-up edge and supports predictable tool life. The MK5 chipbreaker promotes controlled chip segmentation, improving process stability and lowering the frequency of tool changes, which in turn can reduce unplanned downtime and improve overall throughput.

Geometry and toughness that support reliable turning

A rhombic 55° shape delivers flexible approach angles for facing and light profiling, while the 0° negative rake provides the edge strength required for interrupted cuts and heavier engagement. The generous 1.2 mm corner radius increases edge robustness and extends service life under demanding conditions. With a defined tolerance class M, the insert ensures consistent seat fit and repeatable performance in standard toolholders, helping to maintain component tolerances and reduce scrap rates.

Production benefits and application clarity

Designed primarily for cast iron in accordance with ISO material group K, this insert balances productivity and durability: fewer insert changes, stable surface finish and better cycle-time predictability. The MK5 chip control reduces the risk of chip entanglement, supporting safer, cleaner machining environments and easing downstream handling. Backed by the engineering behind Tiger·tec Silver, the grade offers a practical route to optimised processes when machining abrasive cast-iron alloys in medium- to high-volume production.

Contact Metav Werkzeuge for tailored cutting strategy recommendations and to secure authentic Walter Tools DNMG150412-MK5 WKK20S inserts for consistent cast-iron production

Technical data

• Article number: DNMG150412-MK5-WKK20S-WALTER
• Designation: DNMG150412-MK5 WKK20S
• Product type: indexable turning insert
• Series: Tiger·tec Silver
• Manufacturer: Walter Tools

Core facts

• Corner radius: 1.2 mm
• Geometry angle: 55°
• Rake angle: 0° (negative)
• Plate size: 15
• Plate thickness: 04
• Tolerance class: M

Materials & features

• Grade: WKK20S
• Chipbreaker: MK5
• Coating/technology: Tiger·tec Silver
• Material designation: K (cast iron)
• Suitable for: cast iron
• Execution: G

FAQ

Which materials are suitable for this insert?
The DNMG150412-MK5 WKK20S from Walter Tools is designated for cast iron (ISO group K) and is optimised for the abrasive wear and breakable chips typical of those alloys.

How does the MK5 chipbreaker affect machining?
The MK5 chipbreaker on this Walter Tools insert promotes reproducible chip segmentation when turning cast iron, improving chip evacuation and enhancing process stability.

What advantage does Tiger·tec Silver provide?
Tiger·tec Silver on the WKK20S grade increases resistance to abrasive wear and helps maintain edge integrity, supporting longer service intervals and predictable replacement cycles.

Why choose a 0° negative rake geometry?
The 0° negative rake offers greater edge strength for heavy cuts and interrupted turning; combined with the rhombic 55° shape, it provides flexibility across common turning operations.

Is this insert compatible with standard DNMG toolholders?
The insert follows the DNMG150412-MK5 designation and the tolerance class M, which ensures compatibility and a secure fit in standard DNMG-compatible toolholders.

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 registered trademarks are mentioned for explanatory purposes only; there is no affiliation between our company and the mentioned brands. The offered article is an original, factory-new product of Walter Tools. Walter Tools is part of the Walter AG group, a recognised provider of precision cutting tools.