SDMW120425-A57 WKK25G Wendeplatten - Walter Tools

High wear resistance and consistent chip control make this insert ideal for productive cast-iron machining; benefit from the Tiger‑tec Gold coating and the A57 chipbreaker together with a 2.5 mm corner radius for stable cutting performance. Order directly via Metav Werkzeuge or consult our specialists for application support.

SDMW120425-A57 WKK25G – Indexable milling insert for cast iron, Tiger‑tec Gold (Walter Tools)

The SDMW120425-A57 WKK25G is an indexable milling insert optimised for efficient machining of cast iron, combining a coated carbide grade with a square 90° geometry for robust face and profile milling.

• Tiger‑tec Gold coated carbide
• Optimised A57 chipbreaker
• Designed for cast iron (ISO group K)
• 2.5 mm corner radius, square 90°

Stable performance for demanding cast-iron applications

The combination of Tiger‑tec Gold coating and a coated carbide substrate delivers enhanced wear resistance and thermal stability during interrupted and continuous cuts in cast iron. The insert’s geometry — a square 90° profile with a 2.5 mm corner radius — reduces edge chipping while supporting consistent flank contact, which helps maintain dimensional stability over longer tool life. For production environments this translates into fewer tool changes and more predictable cycle times, supporting higher machine utilisation and lower unit costs.

Controlled chip formation for uninterrupted machining

An optimised A57 chipbreaker provides reliable chip control in brittle cast-iron materials, breaking short, fragmentary chips that are easy to evacuate. This reduces the risk of chip re-cutting and tool damage in shoulder and slot milling operations. The insert design, combined with a 15° clearance angle, improves entry behaviour and reduces transient loads during engagement, resulting in smoother passes and less vibration in demanding routines.

Coating and grade engineered to extend tool life

The coated carbide grade of the Tiger‑tec Gold series is tuned for abrasive wear typical of cast-iron machining. The coated carbide surface lowers adhesive build-up and improves resistance to abrasive constituents in iron alloys, while the coating architecture helps dissipate heat at the cutting edge. As a result, the insert sustains cutting parameters for longer periods, enabling higher productivity with consistent surface results and repeatable tool change intervals.

Practical integration into milling systems

The insert’s compact 12 mm seat size and 4 mm plate thickness make it compatible with common indexable milling cutter bodies that accept SDMW‑type inserts. The square form allows four indexable edges per insert, supporting cost-effective tool utilisation. The SDMW120425-A57 WKK25G is suitable for both roughing passes where stability and edge life are crucial and for semi-finish passes where chip control is important; selecting appropriate cutting data ensures the expected balance between material removal rate and edge life.

For efficient cast-iron milling using Walter Tools' Tiger‑tec Gold grade, contact Metav Werkzeuge for tailored advice and ordering: info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: SDMW120425-A57-WKK25G-WALTER
• SKU: SDMW120425-A57-WKK25G-WALTER
• Designation: SDMW120425-A57 WKK25G
• Manufacturer: Walter Tools

Facts

• Insert size: 12 mm
• Corner radius: 2.5 mm
• Clearance angle: 15°
• Thickness: 4 mm
• Tolerance class: M

Special features

• Series: Tiger‑tec Gold
• Grade: WKK25G (coated carbide)
• Chipbreaker: A57
• Shape: Square 90°
• Material application: Cast iron (ISO group K)
• Execution: W

FAQ

Which materials is this insert suitable for?
The SDMW120425-A57 WKK25G is specifically designed for cast iron (ISO group K) applications; the WKK25G grade is tuned to resist abrasive wear typical of these materials.

What chip control can be expected with the A57 chipbreaker?
The A57 chipbreaker delivers short, controllable chips in brittle materials, supporting safe evacuation and reduced re-cutting during face and slot milling.

How does the Tiger‑tec Gold coating affect tool life?
The Tiger‑tec Gold coating enhances thermal stability and wear resistance on the cutting edge, extending the effective tool life of the insert under typical cast‑iron cutting conditions.

Is the insert compatible with common SDMW cutter bodies?
Yes, the SDMW120425-A57 form factor and 12 mm seat size are compatible with standard cutter bodies designed for SDMW inserts, allowing four indexed cutting edges per insert.

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

The Walter AG (trading as Walter Tools) is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Sandvik Group. Protected trademarks and trade names belong to their respective owners. Brand names and trademarks are mentioned for explanatory purposes only. There is no affiliation between our company and the named brands. The offered item is original, factory‑new merchandise from the manufacturer.