CPGT09T308-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Benefit from a combination of high process security and extended tool life thanks to the Tiger·tec Silver coating and the MM4 chipbreaker; ideal for machining stainless steels and heat-resistant alloys. Order the insert directly via Metav Werkzeuge or consult our team for application advice.

CPGT09T308-MM4 WSM20S turning insert — Tiger·tec Silver coating, MM4 chipbreaker, Walter Tools

The CPGT09T308-MM4 WSM20S is a rhombic 80° turning insert with a 0.8 mm corner radius and MM4 chipbreaker, designed for reliable machining of stainless steels and high-temperature alloys

• Tiger·tec Silver coating for wear resistance
• MM4 chipbreaker for reliable chip control
• Rhombic 80° form with 0.8 mm corner radius
• Optimised for stainless steel and superalloys

Consistent performance in demanding materials

The coated grade WSM20S in the Tiger·tec Silver family is tuned for the specific demands of stainless steels (ISO group M) and heat-resistant alloys (ISO group S). Its substrate and coating balance hardness and toughness to reduce edge wear and adhesion under high cutting temperatures. This results in a measurable improvement in tool life and process stability, which supports predictable cycle times and reduces unscheduled tool changes on the production floor. The design is particularly suitable where secure chip formation and sustained cutting-edge strength are decisive for productivity.

Geometry and chip control that stabilise processes

The rhombic 80° geometry combined with the MM4 chipbreaker promotes controlled chip flow and repeatable cutting conditions. The 0.8 mm corner radius and 11° clearance angle help distribute cutting forces and lower peak loads on the cutting edge, improving surface integrity and dimensional consistency. These geometric choices reduce the risk of built-up edge and enable stable turning when facing variable feed or interrupted cuts. As a result, the insert contributes directly to lower rework rates and more consistent part quality.

Coating and robustness for longer runtime

The Tiger·tec Silver coating provides thermal and abrasive resistance without sacrificing toughness, which is important when machining materials that generate heat or tend to work-harden. Combined with the insert's T3 thickness, the system offers a robust cutting edge that tolerates tougher engagement angles and prolonged use. The coating technology also aids in chip evacuation and reduces friction at the cutting zone, supporting consistent machining performance and making the insert a cost-effective choice across medium- and high-duty turning tasks.

Practical benefits for workshop efficiency

Specified as a turning and boring indexable insert, the component is straightforward to implement in standard toolholders and is compatible with common clamping systems. The combination of optimized chip control, robust coating and purposeful geometry helps to shorten set-up times and reduce scrap—improvements that benefit both small-batch shops and larger production lines. Backed by Walter Tools development, this insert supports stable process behaviour and repeatable results, which in turn enhances overall shop-floor efficiency and confidence in daily operations.

Contact Metav Werkzeuge for tailored process recommendations or order the CPGT09T308-MM4 WSM20S insert through Metav Werkzeuge to ensure optimal setup and cutting data for specific materials

Technical data

• Article number: CPGT09T308-MM4-WSM20S-WALTER
• Designation: CPGT09T308-MM4 WSM20S
• Manufacturer: Walter Tools
• Series: Tiger-tec Silver
• Grade: WSM20S
• Chipbreaker: MM4
• Form: Rhombus 80°
• Thickness: T3

Facts

• Clearance angle: 11°
• Corner radius: 0.8 mm
• Insert size: 09
• Tolerance class: G

Special features

• Coating: Tiger·tec Silver
• Material applications: stainless steels (M), superalloys and titanium (S)
• Application: turning / boring indexable insert
• Geometry: rhombic 80° with MM4 chip control

FAQ

What materials is this insert suitable for?
The Walter Tools CPGT09T308-MM4 WSM20S insert is specialised for stainless steels (ISO group M) and heat-resistant superalloys/titanium (ISO group S), offering balanced wear resistance and edge stability.

How does the MM4 chipbreaker affect machining?
The MM4 chipbreaker on the CPGT09T308-MM4 improves chip control and evacuation, reducing the likelihood of chip-related interruptions and supporting consistent surface finish and tool life.

Can this insert be used for interrupted cuts?
Yes, the combination of the insert geometry and the Tiger·tec Silver coating gives the CPGT09T308-MM4 WSM20S enhanced edge robustness, making it suitable for many interrupted cutting applications when set up correctly.

Which series does this cutting grade belong to and what is its benefit?
The insert belongs to the Tiger·tec Silver series; its coating technology is designed to extend tool life and maintain cutting-edge integrity in demanding temperature and adhesion conditions.

Hersteller: Walter Deutschland GmbH, Derendinger Straße 53, 72072 Tübingen

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