CCMT120404-FM4 WSM20S FM4 Wendeplatten - Walter Tools

Take advantage of the combination of a Tiger·tec Silver coated grade, a precise FM4 chipbreaker and a 7° clearance angle for stable cutting in demanding applications; order the inserts via Metav Werkzeuge or request application advice from our consultants.

CCMT120404-FM4 WSM20S turning insert (rhombic 80°, 7° clearance) — Walter Tools

CCMT120404-FM4 WSM20S is a rhombic turning insert designed for heavy-duty performance in difficult-to-machine materials and rostfreier Stahl, suitable for finishing and medium-depth turning in professional workshop and production environments.

• Tiger·tec Silver coated carbide for longevity
• Optimised for rostfreier Stahl and superalloys
• 7° clearance angle for stable chip control

Consistent cutting performance for demanding materials

The combination of a coated carbide grade and a stabilising FM4 chipbreaker delivers repeatable results when machining high-strength alloys. The grade WSM20S, part of the Tiger·tec Silver family, is engineered for thermal resilience and reliable edge stability when facing materials that generate heat and tend to strain the cutting edge. This geometry supports secure chip formation, reducing the risk of built-up edge and improving surface finish; the insert shape rhombic 80° inherently provides versatility for both profile and face turning tasks.

Efficient machining through optimised geometry and coating

A measured 7° clearance angle and a 0.4 mm corner radius combine to balance edge strength with surface quality. The FM4 chipbreaker assists controlled chip flow and minimises tool pressure peaks, which in turn supports higher metal removal rates with maintained component tolerances. Thanks to the coating technology of the Tiger·tec Silver series, the insert sustains a protective layer against abrasion and thermal loads; this leads to longer effective tool life and fewer indexings, which helps streamline production processes and reduce changeover frequency.

Application guidance and process security

Intended for machining rostfreier Stahl and S-group superalloys and titanium under ISO 513 groupings, the insert is suitable where heat resistance and edge robustness are required. The WSM20S grade is particularly advantageous when consistent chip control and surface quality are priorities. Selection of appropriate cutting parameters and stable clamping are recommended to exploit the insert’s strengths; when set up correctly, the tool supports a predictable wear pattern and consistent component quality, contributing to higher overall process reliability.

Contact Metav Werkzeuge for application support and to arrange supply of Walter Tools CCMT120404-FM4 WSM20S turning inserts tailored to the machining task

Technical data

• SKU: CCMT120404-FM4-WSM20S-WALTER
• Designation: CCMT120404-FM4 WSM20S
• Series: Tiger·tec Silver
• Grade: WSM20S
• Chipbreaker: FM4
• Shape: Rhombic 80°
• Size: 12
• Thickness code: 04
• Corner radius: 0,4
• Clearance angle: 7°
• Tolerance class: M
• Execution: T
• Material/application code: S / M
• Manufacturer: Walter Tools

Facts

• Corner radius: 0.4 mm
• Clearance angle: 7°
• Inscribed size: 12
• Thickness code: 04
• Tolerance class: M

Special features

• Tiger·tec Silver coating technology
• Coated carbide grade WSM20S
• FM4 chipbreaker for controlled chip flow
• Rhombic 80° insert form
• Suitable for rostfreier Stahl (M) and Superalloys/Titanium (S)

FAQ

Which materials are best suited for this insert?
The CCMT120404-FM4 WSM20S insert is designed primarily for rostfreier Stahl and S-group superalloys; the Tiger·tec Silver grade supports thermal resistance and stable cutting in these materials.

What is the purpose of the FM4 chipbreaker?
The FM4 chipbreaker on the Walter Tools insert promotes predictable chip formation and evacuation, reducing build-up at the cutting edge and contributing to improved surface finish and tool life.

How does the 7° clearance angle affect machining?
A 7° clearance angle provides reduced rubbing on the flank and helps maintain a stable cutting edge under load, which is particularly beneficial when machining tough or heat-generating materials with the WSM20S grade.

Can the insert be used for finishing and medium-depth cuts?
Yes, the rhombic 80° geometry and 0.4 mm corner radius make the insert versatile for finishing and medium-depth turning operations while maintaining component accuracy.

Is the CCMT120404-FM4 WSM20S suitable for indexable toolholders?
The insert conforms to standard CCMT geometries and fits compatible indexable turning toolholders designed for rhombic 80° inserts; correct clamping and seat condition are important for optimal performance.

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

The Walter AG (brand: 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. Protected trademarks and trade names remain the property of their respective owners. Brand names and protected trade names are mentioned for explanatory purposes only. There is no affiliation between our company and the mentioned brands. The offered article is an original, brand-new factory product of the manufacturer.