SDMT120408-D51 WKP25S WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of the Tiger‑tec Silver cutting-grade and the robust WKP25S geometry for reliable machining of steel and cast iron; the square 90° form with a 15° clearance angle ensures consistent chip control and repeatable results. Order directly via Metav Werkzeuge or contact our technical consultants for application-specific guidance.

SDMT120408-D51 WKP25S – Indexable milling insert (square 90°, 15° clearance) — Walter Tools

The SDMT120408-D51 WKP25S is a square indexable milling insert designed for productive finishing and semi-finishing of steel and cast iron, combining a coated carbide grade with a D51 chipbreaker for controlled chip formation.

• Tiger‑tec Silver coating technology
• Grade WKP25S for steel and cast iron
• 15° clearance angle for secure cutting
• Square 90° with 0.8 mm corner radius

Consistent productivity through optimised cutting grade

The combination of Tiger‑tec Silver coating and the WKP25S grade yields a balance between wear resistance and thermal stability that supports higher cutting parameters on a wide range of steels and cast iron. The coated carbide construction reduces abrasive wear and supports longer tool life, which in turn lowers downtime and contributes to more predictable machining cycles. For production environments where repeatability matters, this cutting grade translates directly into fewer insert changes and steadier output.

Reliable geometry for chip control and surface quality

The insert’s chipbreaker D51 geometry is developed to promote short, manageable chips in interrupted and continuous cuts, reducing the risk of tangling and tool rework. The square 90° shape provides four usable cutting corners, and the 0.8 mm corner radius helps to blend edge strength with surface finish requirements. For users less familiar with insert geometry: a chipbreaker channels the chip away from the cutting edge, while the corner radius distributes cutting forces to avoid premature edge failure.

Practical benefits in a production setting

With a 15° clearance angle, the insert reduces rubbing and heat build-up behind the cutting edge, improving consistency when machining typical carbon and alloy steels as well as cast iron. The design supports both ramping and shoulder milling operations where stability and surface integrity are required. These characteristics mean the insert is suitable for batch production as well as single-piece flow in mixed-shop environments, offering a pragmatic route to higher throughput without extensive process requalification.

Selection and handling advice for longer tool life

When selecting holders and cutters for this insert, match the insert pocket to the SDMT geometry and ensure correct clamp torque to avoid movement during cutting—this preserves the WKP25S edge and the coating performance. Light finishing passes with modest feed adjustments will prolong edge life, while conservative increases in cutting speed help exploit the coating’s thermal resilience. If in doubt about machining parameters for specific steel grades or cast iron types, Metav Werkzeuge’s technical team can advise on speeds, feeds and coolant strategy.

For a tailored recommendation based on the Tiger‑tec Silver grade and the machining task at hand, contact Metav Werkzeuge for application support and fast availability.

Technical data

• SKU: SDMT120408-D51-WKP25S-WALTER
• Designation: SDMT120408-D51 WKP25S
• Type: Indexable milling insert (milling insert)
• Manufacturer: Walter Tools
• Series: Tiger‑tec Silver
• Grade: WKP25S

Core dimensions

• Plate size: 12 mm
• Thickness: 4 mm
• Corner radius: 0.8 mm
• Clearance angle: 15°

Features & suitability

• Chipbreaker: D51
• Shape: Square 90°
• Material suitability: P (steel) / K (cast iron)
• Tolerance class: M
• Execution code: T
• UID: SDMT120408-D51-WKP25S-WALTER

FAQ

What materials is this insert best suited for? This SDMT120408-D51 WKP25S insert is optimised for steel (P) and cast iron (K) applications owing to its coated carbide grade and chipbreaker geometry.

How does the Tiger‑tec Silver coating benefit machining? The Tiger‑tec Silver coating improves thermal stability and wear resistance, enabling more consistent tool life and the option to run increased cutting speeds on suitable steels and cast irons.

What does the D51 chipbreaker provide in daily use? The D51 chipbreaker promotes short, controllable chips, which simplifies chip evacuation and reduces rework due to chip entanglement in mixed or interrupted cuts.

How many cutting edges are available per insert? The square 90° insert provides four usable cutting corners per indexable insert, offering efficient corner rotation for extended service life.

Are there any special clamping recommendations? Ensure the insert pocket matches the SDMT geometry and apply correct clamp torque to guarantee stability; correct clamping preserves edge life and coating performance.

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

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