WCGT040204-FM2 WSM21 FM2 Wendeplatten - Walter Tools

Take advantage of the combination of a heat-resistant, coated carbide grade and a secure FM2 chipbreaker for uninterrupted machining of demanding materials; order directly via Metav Werkzeuge or consult our specialists for application-matched recommendations.

WCGT040204-FM2 WSM21 Drilling/Boring and Turning indexable insert — Trigon 80°, FM2 chipbreaker, Walter Tools

The WCGT040204-FM2 WSM21 is a trigon 80° indexable insert designed for drilling, boring and turning in demanding alloys, optimised for stainless steels and heat-resistant superalloys.

• Walter grade WSM21, coated carbide
• Trigon 80° form with 0.4 mm corner radius
• FM2 chipbreaker for secure chip control
• 7° clearance angle, suitable for stainless steel

Boosted productivity through stable chip formation

The combination of the WSM21 coated carbide grade and the FM2 chipbreaker delivers a measurable improvement in process stability when machining ductile and heat‑resistant materials. The coating enhances thermal resistance while the chipbreaker geometry promotes controlled chip segmentation, which reduces downtime from chip entanglement and stabilises cutting forces. This results in a more consistent material removal rate and fewer interrupted cycles, making the insert particularly suitable for series production where run-to-run repeatability is crucial. The design supports efficient heat management, contributing directly to predictable tool life and lower overall machining costs.

Improved surface finish and predictable cutting edge life

The Trigon 80° insert form with a 0.4 mm corner radius and a 7° clearance angle is configured to balance strength and finish: the sharper corner radius assists in achieving finer surface qualities on internal and external contours, while the clearance angle minimises rubbing and reduces built-up edge formation when working with stainless steels. Coated cemented carbide substrate properties conserve the integrity of the cutting edge under elevated temperatures typical of machining superalloys and titanium grades. For operators less familiar with these terms: the corner radius influences both strength and finish, and the clearance angle determines how cleanly the insert disengages from the workpiece.

Versatile application and economical integration in tooling systems

This insert is intended for use in both drilling/boring and turning tool families, enabling shops to standardise on a single grade across multiple operations. The insert’s WCGT040204-FM2 designation denotes the trigon geometry and size variants compatible with common tool holders, facilitating quick index changes and minimal machine downtime. By choosing a grade optimised for stainless steel and heat-resistant alloys, procurement benefits from broader material coverage and improved stock rationalisation. Application-specific consultation can match the insert to the correct holder and cutting parameters to extract the best balance of material removal rate and tool life.

Discuss application requirements with Metav Werkzeuge for optimised tool selection and fast availability; Metav Werkzeuge provides technical advice and fast delivery — eMail: info@metav-werkzeuge.com | Tel: +49 2822 7131930

Technical Data

• Article number: WCGT040204-FM2-WSM21-WALTER
• Product type: Drilling/Boring and Turning indexable insert
• Designation: WCGT040204-FM2 WSM21
• Manufacturer: Walter Tools
• Grade: WSM21

Facts

• Clearance angle: 7°
• Corner radius: 0.4 mm
• Insert size: 04
• Plate thickness: 02
• Form: Trigon 80°
• Tolerance class: G

Special features

• Substrate: coated cemented carbide
• Chipbreaker: FM2
• Suitable for: stainless steel (M)
• Also suitable for: heat-resistant superalloys and titanium (S)
• Application: drilling, boring, turning
• Series: Walter Schneidstoffsorte - Serie offen

FAQ

Is this insert suitable for machining stainless steel?
Yes. The WCGT040204-FM2 WSM21 insert is specified for stainless steel applications (material group M) and is optimised to reduce built-up edge and improve chip control.

Can the insert be used for heat-resistant superalloys or titanium?
The WSM21 grade and the FM2 chipbreaker are designed to handle heat-resistant superalloys and titanium (material group S), offering improved thermal resistance and edge stability for these demanding materials.

What benefits does the FM2 chipbreaker provide in continuous turning operations?
The FM2 chipbreaker ensures controlled chip segmentation and reliable chip evacuation, which reduces machine stoppages and supports consistent cutting forces during extended production runs.

How does the Trigon 80° geometry affect toolholder compatibility?
The Trigon 80° form follows common industry geometries for trigon inserts, allowing straightforward integration with compatible toolholders specified for WCGT-style inserts.

Is the WCGT040204-FM2 part of an open series or a specialised family?
This insert belongs to the Walter Schneidstoffsorte - Serie offen, providing a versatile solution across a broad range of materials and geometries.

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