SDMT120408-D57 WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, a WKP25S carbide grade and a compact square geometry for consistent, economical milling of steel and cast iron; order directly via Metav Werkzeuge or consult our technical team for application-specific advice.

SDMT120408-D57 WKP25S indexable milling insert — Tiger·tec Silver, 15° clearance (Walter Tools)

SDMT120408-D57 WKP25S is an indexable milling insert designed for robust general milling of steel and cast iron, combining a coated carbide grade with a geometry tuned for reliable chip control and repeatable results.

Tiger·tec Silver coating
WKP25S coated carbide grade
15° clearance angle
0.8 mm corner radius
For steel and cast iron

Consistent performance with a premium coated grade

The Tiger·tec Silver coating and WKP25S grade deliver a balanced combination of wear resistance and toughness that suits mixed-production environments. The coating reduces flank and crater wear under typical milling temperatures, which lengthens tool life and lowers the frequency of insert changes. As a result, production runs on steel and cast iron materials remain productive and predictable, with fewer unexpected interruptions. The designation SDMT120408-D57 signals the insert geometry and chipbreaker that together support controlled chip formation.

Geometry that stabilises cutting and surface quality

A 15° clearance angle and a 0.8 mm corner radius give this square (90°) insert good edge strength while still enabling acceptable surface finishes on general-purpose passes. The corner radius increases edge robustness for interrupted cuts and heavy engagement, whereas the clearance angle helps to avoid rubbing on the flank face and reduces heat transfer to the insert body. The square format and the specified insert size provide four usable cutting edges per indexable body, improving the overall cost efficiency of the milling system.

Clear material application and machining benefits

Marked for P (steel) and K (cast iron) applications according to ISO groupings, the insert is tailored to the thermal and abrasive challenges typical of these materials. The chipbreaker D57 assists in fragmenting chips to manageable lengths, enhancing process reliability and reducing the risk of chip entanglement. With a tolerance class M, the insert supports repeatable seating in the cutter body so that run-out and positional variance are minimised, contributing to stable dimensional results and less rework.

Practical advantages for workshop integration

Using this indexable insert reduces setup complexity: inserts are mounted in standard square-pocket milling bodies, enabling quick indexing and fast replacement compared with solid tools. The compact plate thickness and standard form factor simplify inventory management and permit economic stocking across diverse jobs. Combined with the protective Tiger·tec Silver coating and the WKP25S grade, the system offers a pragmatic route to improved uptime and predictable tool consumption.

Contact Metav Werkzeuge for tailored recommendations on cutter bodies, cutting parameters and grading choices for specific steel or cast iron alloys, and obtain professional application support from our consultants.

Technical data

• Article number: SDMT120408-D57-WKP25S-WALTER
• SKU: SDMT120408-D57-WKP25S-WALTER
• Product type: Indexable milling insert
• Designation: SDMT120408-D57 WKP25S
• Series/grade: Tiger·tec Silver / WKP25S
• Manufacturer: Walter Tools

Facts

• Shape: Square 90°
• Size: 12 (designation)
• Thickness: 04
• Corner radius: 0.8 mm
• Clearance angle: 15°
• Chipbreaker: D57
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Carbide type: Coated cemented carbide (WKP25S)
• Material application: Steel (P); Cast iron (K)
• Geometry suited to general-purpose milling and interrupted cuts

FAQ

What materials is this insert suitable for?
This insert is specified for steel (P) and cast iron (K) machining; the WKP25S grade and Tiger·tec Silver coating are optimised for those ISO groups.

How does the 0.8 mm corner radius affect performance?
A 0.8 mm corner radius increases edge strength for heavier cuts and interrupted milling, improving resistance to edge chipping while maintaining acceptable surface quality.

Can this insert be indexed to use all cutting edges?
Yes. The square 90° form provides four usable edges per insert; correct seating according to the tolerance class M ensures repeatable alignment in the cutter body.

What role does the chipbreaker D57 play?
The D57 chipbreaker promotes short, controlled chips on mixed steel and cast iron operations, aiding chip evacuation and reducing risks of entanglement.

Is this insert compatible with standard cutter bodies?
The SDMT geometry and dimensions align with widely used square-pocket milling bodies; verify compatibility with the chosen cutter's clamping and seat geometry before ordering.

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

Protected trademarks and trade names remain the property of their respective owners. Brand names and registered marks are referenced exclusively for explanation and identification of compatibility or origin; there is no affiliation between our company and the mentioned manufacturers. The offered item is an original, factory-new product from the stated manufacturer.