CCMT09T308-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the proven combination of Tiger·tec Silver coating and the MM4 chipbreaker for stable chip control and extended edge life; the result is reliable, productive machining of demanding alloys. Order the insert directly via Metav Werkzeuge or consult our technical advisers for cutting-data optimisation.

CCMT09T308-MM4 WSM20S turning insert by Walter Tools — Tiger·tec Silver, for rostfreier Stahl and superalloys

The CCMT09T308-MM4 WSM20S is a coated carbide turning insert designed for heavy-duty and finish turning of rostfreier Stahl and heat-resistant superalloys, offering a balance of edge stability and wear resistance in demanding production environments

• Tiger·tec Silver grade WSM20S
• Suitable for rostfreier Stahl and superalloys
• Rhombic 80° insert form
• MM4 chipbreaker for consistent chips

Reliable performance on difficult-to-machine alloys

The insert is built around the WSM20S grade within the Tiger·tec Silver family, a coated carbide formulation optimised for applications where temperature and material toughness challenge tool life. The MM4 chipbreaker promotes predictable chip formation, reducing interruption from long, stringy chips and helping maintain a steady process. For shops processing rostfreier Stahl (ISO group M) and heat-resistant alloys (ISO group S), this combination reduces rework and increases effective cutting time, supporting higher overall throughput with fewer unscheduled tool changes.

Geometry that balances strength and versatility

A rhombic 80° shape with a 7° relief angle provides a robust cutting edge and access for common turning operations; the 0.8 mm corner radius absorbs cutting loads and improves finish when used in light- to medium-depth cuts. The T3 insert thickness and the CCMT-style pocket compatibility ensure secure clamping and stability under moderate radial forces. In practical terms, these geometry choices translate into smoother surface quality and an extended margin against edge chipping when compared with more acute geometries.

Process benefits: consistency, longevity and predictability

Using an insert from the Tiger·tec Silver family supports greater process reliability via optimised coating properties and a stable substrate. The result is longer tool life and consistent component quality across batch runs. The insert’s design helps to maintain cutting-edge integrity at elevated temperatures typical of rostfreier Stahl and superalloy machining, which in turn reduces machine downtime and improves cost-efficiency per component. For production engineers, that means more predictable planning and less variation between shifts.

Contact Metav Werkzeuge for tailored cutting data and fast availability of Walter Tools inserts — our consultants will advise on insert selection and recommended cutting parameters.

Technical data

• SKU: CCMT09T308-MM4-WSM20S-WALTER
• Designation: CCMT09T308-MM4 WSM20S turning insert
• Manufacturer: Walter Tools

Core specifications

• Relief angle: 7°
• Corner radius: 0.8 mm
• Insert size: 09
• Thickness: T3
• Tolerance class: M

Materials & features

• Grade/series: Tiger·tec Silver — WSM20S
• Chipbreaker: MM4
• Insert form: Rhombic 80°
• Applicable material groups: rostfreier Stahl (M), superalloys / titanium alloys (S)
• Execution: T
• Applicable material codes: S / M

FAQ

What materials is this insert intended for? The CCMT09T308-MM4 WSM20S insert is specified for rostfreier Stahl (ISO group M) and heat-resistant superalloys (ISO group S), offering temperature-resistant performance and controlled chip formation.

How does the MM4 chipbreaker affect machining? The MM4 chipbreaker produces short, manageable chips and stabilises cutting forces, which improves process consistency and reduces interruptions during turning operations with challenging materials.

Which features increase tool life in this grade? The combination of the Tiger·tec Silver coating and the WSM20S carbide grade enhances wear resistance at elevated temperatures, while the geometry (0.8 mm corner radius, rhombic 80°) protects the cutting edge against chipping.

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

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