SPMT09T308-D51 WKP25S WSP25S Wendeplatten - Walter Tools

Benefit from the combination of cost-effective performance, reliable chip control and broad material coverage for a smoother production flow. Order the SPMT09T308-D51 WKP25S milling insert directly via Metav Werkzeuge or ask our consultants if needed.

SPMT09T308-D51 WKP25S — Milling insert for steel and cast iron | Walter Tools

The SPMT09T308-D51 WKP25S is a square 90° milling indexable insert designed for productive machining of steel and cast iron, using Tiger·tec Silver coating technology for improved wear resistance and stable chip formation.

• Square 90° insert design
• Tiger·tec Silver coated carbide
• Suitable for steel and cast iron machining
• 11° clearance, r0.8 corner radius

High productivity through advanced grade and coating

The insert combines the WKP25S grade with the Tiger·tec Silver coating to deliver consistent performance when machining group P (steel) and group K (cast iron) materials according to ISO classifications. The coated carbide substrate reduces abrasive wear and supports stable chip formation, which extends edge life and reduces unscheduled tool changes. This technical pairing provides a predictable machining window, so cycle times become more reliable and process planning is simplified. The design aims to balance tool life with cutting performance for medium to high material removal rates.

Geometry tuned for reproducible surface quality

The square 90° geometry and defined r0.8 corner radius generate a robust cutting edge that tolerates moderate interruptions and varying depth of cut. The 11° clearance angle reduces rubbing and heat build-up at the flank, supporting a steadier cutting action and improved surface finish on workpieces. The tolerance class M ensures consistent dimensions across batches, enabling repeatable seating in toolholders and predictable runout behaviour. Clear explanation: a larger corner radius distributes cutting forces over a wider area, lowering local stress and improving edge endurance, while the clearance angle helps prevent flank wear.

Chip control and process stability for efficient turning cycles

The D51 chipbreaker geometry is optimised for the target materials and typical chip forms encountered in steel and cast iron machining. A well-matched chipbreaker reduces the risk of long, stringy chips and improves evacuation, which contributes directly to machine uptime and operator safety. The insert’s coated carbide construction supports higher cutting speeds compared with uncoated grades, enabling elevated productivity without sacrificing the cutting edge integrity. These properties make the insert a pragmatic choice for series production or demanding single-part machining where process stability is a priority.

Practical integration and handling benefits

With a size code of 09 and thickness T3, the insert fits standard square 90° milling pockets that accept this geometry. The indexable nature enables quick orientation changes and economical reuse of the cutting edges, lowering per-part tooling costs compared with solid tools. The designation SPMT09T308-D51 WKP25S simplifies tool scheduling and procurement within tool management systems. For workshops seeking a robust multi-purpose insert capable of handling common steel and cast iron tasks, the combination of geometry, chipbreaker and Tiger·tec Silver technology delivers straightforward handling and measurable production advantages.

For reliable high-productivity machining with Tiger·tec Silver, contact Metav Werkzeuge for availability and application advice via info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• SKU: SPMT09T308-D51-WKP25S-WALTER
• Description: Fräswendeschneidplatte SPMT09T308-D51 WKP25S
• Manufacturer: Walter Tools

Facts

• Clearance angle: 11°
• Corner radius: r0.8 mm
• Plate form: Square 90°
• Plate size code: 09
• Plate thickness: T3
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WKP25S (coated carbide)
• Chipbreaker: D51
• Material suitability: P (steel), K (cast iron)
• Execution: T (as specified)

FAQ

What materials is the insert suitable for? The SPMT09T308-D51 WKP25S insert is suitable for machining steel (ISO group P) and cast iron (ISO group K), utilising the Tiger·tec Silver coating for improved wear resistance.

How does the chipbreaker D51 affect performance? The D51 chipbreaker promotes controlled chip formation for the relevant material groups, improving evacuation and reducing the risk of entangling chips during milling operations.

What advantages does the Tiger·tec Silver coating provide? Tiger·tec Silver enhances abrasive wear resistance and thermal stability, which supports higher cutting speeds and longer edge life compared with uncoated grades.

Is the corner radius suitable for finishing operations? The r0.8 corner radius offers a compromise between robustness and surface quality; it delivers durable edges while still permitting respectable surface finishes in general milling applications.

Which toolholders are compatible with this insert geometry? The square 90° geometry with size code 09 and thickness T3 matches standard holders designed for SPMT-style inserts; holder selection should follow the machine and application requirements.

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

Protected trademarks and trade names remain the property of their respective owners. Brand names are used for explanation only; there is no connection between Metav Werkzeuge and the mentioned brands. The offered article is an original, factory-new product of the manufacturer.