CPMT09T308-FM4 WMP20S Wendeplatten - Walter Tools

Benefit from the combination of Tiger‑tec Silver coating, the WMP20S grade and a 0.8 mm corner radius for secure chip formation and extended edge life when machining stainless steels; order the CPMT09T308‑FM4‑WMP20S directly via Metav Werkzeuge or request application advice from the consultants.

CPMT09T308-FM4 WMP20S – Rhombic 80° indexable insert, Tiger‑tec Silver (Walter Tools)

The CPMT09T308-FM4 WMP20S is an indexable insert designed for drilling, boring and turning operations, optimised for reliable performance in stainless steel machining.

*Tiger‑tec Silver coating for stable cutting edges
*WMP20S grade optimised for stainless steels
*Rhombic 80° form with 0.8 mm corner radius
*FM4 chipbreaker for reliable chip control
*11° clearance angle for secure cutting performance

Stable cutting behaviour and improved edge life for stainless steels

The Tiger‑tec Silver coating combined with the WMP20S carbide grade provides a balanced surface hardness and adhesion-resistant layer that reduces built‑up edge and thermal degradation during interrupted or continuous cuts. This combination supports a stable cutting edge when processing stainless steels, which are prone to work‑hardening and poor chip breakage. As a result, the insert sustains more consistent tool life and reduces the frequency of tool changes, supporting uninterrupted production and fewer quality variations.

Geometry engineered for secure engagement and chip control

A rhombic 80° insert form and 0.8 mm corner radius deliver a controlled entry angle and a favourable distribution of cutting forces, which helps to avoid edge chipping on demanding materials. The integrated FM4 chipbreaker is tuned to generate short, manageable chips when machining ductile, high‑temperature alloys, improving evacuation and reducing the risk of re‑cutting. The 11° clearance angle ensures positive rake engagement and reliable tool contact, contributing to consistent surface finishes and predictable machining behaviour.

Versatile use across drilling, boring and turning processes

Designed as a multi‑purpose insert for combined operations, this indexable plate suits both rotary cutting and axial reaming tasks with the same geometry, reducing tooling complexity at the machine. The insert’s configuration simplifies tool inventory and enables quick indexing for renewed cutting edges, which enhances shopfloor uptime. The balanced design supports customers seeking both efficiency and process reliability in mixed‑batch production where stainless steels are a frequent workload.

Practical benefits for production and process security

By combining a modern coating technology with a grade optimised for tough materials, the insert helps to lower the total cost of machining through longer tool life and fewer unscheduled tool changes. Process stability is improved by the controlled chip formation and edge strength, which reduces scrap rates and rework. In short runs or longer production sequences, the geometry and material pairing aim to deliver reproducible results and predictable maintenance intervals, aiding planning and throughput.

Contact Metav Werkzeuge for tailored cutting data and ordering of Walter Tools Tiger‑tec Silver inserts to secure the CPMT09T308‑FM4‑WMP20S for stainless steel machining

Technical Data

• Article number: CPMT09T308-FM4-WMP20S-WALTER
• Designation: CPMT09T308-FM4 WMP20S
• Type: Drill/boring and turning indexable insert
• Manufacturer: Walter Tools
• Grade: WMP20S
• Series: Tiger‑tec Silver
• Tolerance class: M

Facts

• Clearance angle: 11°
• Corner radius: 0.8 mm
• Insert form: Rhombus 80°
• Insert size: 09
• Plate thickness: T3

Special features

• Chipbreaker: FM4
• Coating technology: Tiger‑tec Silver
• Material suitability: stainless steels
• Application: drilling, boring, turning
• Indexable insert designation without grade: CPMT09T308-FM4

FAQ

Is this insert suitable for stainless steels?
The CPMT09T308‑FM4 WMP20S grade is explicitly optimised for machining stainless steels, offering secure chip formation and resistance to built‑up edge under medium to robust cutting conditions.

What does the FM4 chipbreaker achieve?
The FM4 chipbreaker on this indexable plate promotes reliable chip control and short chip formation when machining ductile or heat‑generating alloys, improving evacuation and reducing re‑cutting.

Can the insert be used for both drilling and turning operations?
Yes, the insert is designed for combined drilling/boring and turning tasks, enabling flexible use across operations with comparable geometry and secure cutting behaviour.

Why is the 0.8 mm corner radius important?
A 0.8 mm corner radius balances edge strength and surface finish, reducing the risk of chipping while maintaining good load distribution during interrupted cuts or varying engagement depths.

Which production benefits can be expected from the Tiger‑tec Silver coating?
The Tiger‑tec Silver coating on the WMP20S grade enhances thermal resistance and reduces adhesion, extending edge life and contributing to consistent process reliability in stainless steel machining.

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