SPMW120408-A57 WKP25S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, reliable A57 chip control and a square 90° geometry for consistent milling results in steel and cast iron; order the insert via Metav Werkzeuge or consult our technical advisors for application-specific recommendations.

SPMW120408-A57 WKP25S milling insert — Tiger·tec Silver, A57 chipbreaker | Walter Tools

SPMW120408-A57 WKP25S is a square milling insert engineered for productive machining of steels and cast irons in medium to heavy cutting conditions.

• Tiger·tec Silver coating for extended tool life
• Optimised A57 chipbreaker for stable chip formation
• Suitable for steel and cast iron (P / K)
• Square 90° shape with 0.8 mm corner radius

Consistent productivity through advanced coating and grade

The combination of Tiger·tec Silver technology and the WKP25S grade delivers improved wear resistance and thermal stability. This coating system reduces flank and crater wear under the typical temperatures encountered when machining unalloyed and alloyed steel, which extends useful life and lowers tool-change frequency. The result is measurable throughput gains: less interruption for tool replacement and a more predictable maintenance cycle. For process planners, the insert’s composition supports steady cut performance in serial and batch production.

Reliable chip control and predictable machining behaviour

An A57 chipbreaker is engineered to produce short, controlled chips when turning down feeds and depths typical for steel and cast iron. Controlled chip formation reduces the risk of chip entanglement and surface damage, improving operational safety and surface finish consistency. The insert’s geometry, including the square 90° form and a 0.8 mm corner radius, provides robust cutting edges that resist chipping during interrupted cuts and offer repeatable edge engagement in slotting and face milling operations.

Broad application range with clear material guidance

Designed for the ISO groups P and K, the insert is suitable for both steel (P) and cast iron (K) applications as defined in ISO 513. That range makes the component a versatile choice for mixed-production environments where quick tooling swaps are required between steel and cast iron workpieces. The design supports common industrial practices: choose cutting parameters according to workpiece material and machine capability, and benefit from the grade’s balance of toughness and abrasion resistance to sustain performance across small to medium batch sizes.

Contact Metav Werkzeuge to discuss how the Walter Tools Tiger·tec Silver SPMW120408-A57 WKP25S insert can be integrated into existing setups or to request application-specific parameter recommendations — our technical consultants are available by email or phone.

Technical Data

• SKU: SPMW120408-A57-WKP25S-WALTER
• Designation: SPMW120408-A57 WKP25S
• Manufacturer: Walter Tools
• Product type: Milling insert
• Series: Tiger·tec Silver

Facts

• Relief angle: 11°
• Corner radius: 0.8 mm
• Insert size: 12
• Thickness code: 04
• Tolerance class: M

Special features

• Grade: WKP25S (coated carbide)
• Chipbreaker: A57
• Shape: Square 90°
• Material suitability: P / K (steel / cast iron)
• Execution: W

FAQ

What materials is this insert suitable for?
The SPMW120408-A57 WKP25S insert is formulated for ISO groups P and K, making it suitable for steel and cast iron machining tasks.

How does the Tiger·tec Silver coating improve performance?
Tiger·tec Silver on the WKP25S grade provides enhanced wear resistance and thermal stability, which prolongs edge life and maintains cutting performance under elevated temperatures.

Which chipbreaker is fitted and what is its benefit?
This insert uses the A57 chipbreaker, designed for stable, short chip formation that improves surface finish and reduces chip control issues during milling.

What machining tasks suit the square 90° geometry?
The square 90° shape and 0.8 mm corner radius deliver robust edge strength for face milling, slotting and interrupted cuts, offering reliable engagement in common milling operations.

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

Protected trademarks and trade names remain the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes and do not imply any affiliation or endorsement by Metav Werkzeuge. The offered article is original, factory-new merchandise from the stated manufacturer. The Walter AG (marketed as Walter Tools), headquartered in Tübingen, is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Swedish Sandvik group.