SPMT060304-D51 WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Silver coating and the WKP25S grade for extended tool life and consistent chip control; the square 90° geometry with a 0.4 mm corner radius delivers robust edge strength for stable shoulder milling. Order the insert directly via Metav Werkzeuge or ask our consultants for application support.

SPMT060304‑D51 WKP25S — milling indexable insert by Walter Tools, Tiger‑tec Silver, for steel and cast iron with 11° clearance

The SPMT060304‑D51 WKP25S is a square 90° milling insert designed for high‑productivity machining of steel and cast iron, combining a coated carbide grade with an engineered chipbreaker for reliable performance in both finishing and roughing operations.

• Tiger‑tec Silver coating for long tool life
• Suitable for steel and cast iron machining
• 11° clearance angle for stable cutting
• Square 90° form with 0.4 mm corner radius

Increase output with a coating engineered for endurance

The Tiger‑tec Silver coating paired with the WKP25S grade provides a balance of wear resistance and thermal stability that supports higher cutting parameters. This combination reduces flank and crater wear, enabling longer periods between index changes and maintaining consistent component quality. The built‑in D51 chipbreaker controls chip formation during the typical heat and deformation encountered when cutting steel, preventing built‑up edge and improving surface integrity. For production environments focused on throughput, this grade helps to reduce downtime through predictable tool life.

Consistent machining performance across steel and cast iron

Designed for ISO workpiece groups P and K, the insert is suitable for a wide range of unalloyed and alloyed steel as well as cast iron. The carbide substrate and coating system are selected to withstand the thermal loads of steel cutting and the abrasive wear often present with cast materials. The result is a versatile solution for workshops that switch between material families without the need for extensive tool changes. Where chip shape and evacuation are critical, the chipbreaker geometry improves process stability and reduces the risk of machine interruptions.

Geometry that improves stability and surface finish

The square 90° geometry offers a robust cutting edge for shoulder milling and contouring, while the 11° clearance angle reduces rubbing on the flank face and lowers cutting forces during engagement. A 0.4 mm corner radius strengthens the edge against impact and provides a good compromise between tool life and achievable surface finish. These geometric parameters support repeatable dimensional accuracy on mating surfaces and can help reduce reworking steps, contributing directly to more efficient production cycles.

Practical handling for efficient tool management

Inserts of this family are indexed to provide multiple usable edges, allowing quick rotation when one corner wears. The SPMT060304‑D51 WKP25S is supplied to fit standard SPMT‑type toolholders and is produced to a medium tolerance class (M), supporting consistent seat fit and repeatable clamping. Because the grade is a coated carbide, routine checks on insert seating and cleanliness are sufficient to maintain performance; damaged corners can be rotated out, reducing overall tooling cost compared with solid tools. For initial setup, select cutting data aligned with the coating’s strength and the workpiece group to exploit the grade’s potential for productivity.

For machining applications requiring a reliable, high‑productivity insert, consider Walter Tools’ Tiger‑tec Silver grade; contact Metav Werkzeuge for specific application recommendations or to arrange supply via info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• SKU: SPMT060304-D51-WKP25S-WALTER
• ISO designation: SPMT060304-D51 WKP25S
• Series: Tiger‑tec Silver
• Grade: WKP25S
• Geometry: Square 90°
• Chipbreaker: D51

Facts

• Clearance angle: 11°
• Corner radius: 0.4 mm
• Plate size code: 06
• Thickness code: 03
• Tolerance class: M
• Applicable ISO groups: P, K

Special features

• Coating / substrate: Tiger‑tec Silver, coated carbide
• Suitable materials: steel, cast iron
• Execution: T
• Shape: square insert for shoulder and face milling
• Designed for industrial, high‑productivity use

FAQ

What materials is this insert best suited for?
The answer is: the insert is optimised for steel and cast iron applications according to ISO groups P and K, using the WKP25S grade for balanced wear resistance.

How does the chipbreaker affect machining?
The D51 chipbreaker promotes controlled chip formation and evacuation, which improves process stability and reduces the likelihood of built‑up edge during continuous milling.

What advantages does the 0.4 mm corner radius provide?
A 0.4 mm corner radius increases edge strength for robust shoulder milling and helps achieve consistent surface finish without excessive cutting forces.

Is the insert compatible with standard holders?
Yes, the insert fits standard SPMT‑type toolholders; correct seating and clamping are important to maintain the medium tolerance class (M) accuracy.

How many usable edges are available per insert?
The square 90° design provides multiple indexable corners, allowing rotation to fresh cutting edges to extend overall tool life before replacement.

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

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