SCMT120404-FM4 WSM20S T Wendeplatten - Walter Tools

Take advantage of the combination of durable edge performance, reliable Tiger·tec Silver coating and precise geometry to maintain stable production when machining stainless steel and heat-resistant alloys; order the SCMT120404-FM4 WSM20S turning insert directly via Metav Werkzeuge or consult the team for tailored cutting data.

SCMT120404-FM4 WSM20S turning insert — Square 90° form, FM4 chipbreaker (Walter Tools)

The SCMT120404-FM4 WSM20S is a square 90° turning insert engineered for medium to heavy interrupted machining and specifically suited to stainless steel and heat-resistant superalloys, offering stable edge life under thermal load.

• Tiger·tec Silver coating for edge security
• WSM20S grade for stainless steel and superalloys
• FM4 chipbreaker for stable chip control
• Square 90° form with 0.4 mm corner radius

Durable coating and grade for consistent edge life

The combination of the Tiger·tec Silver coating and the WSM20S grade delivers improved thermal resilience and stable chip formation, which reduces the risk of built-up edge when working with challenging materials. For machining stainless steel and nickel‑based alloys, this results in fewer insert changes, longer tool life and more consistent surface quality. The coated carbide construction supports elevated cutting conditions while helping to protect the cutting edge from abrasion and heat.

Geometry that ensures predictable cutting behaviour

The square 90° format with a 0.4 mm corner radius and 7° relief angle provides a robust edge that resists deformation and maintains dimensional accuracy in repetitive turning operations. The insert size of 12 mm and plate thickness 04 give a compact but strong cutting edge; this geometry supports stable cutting forces, reduces vibration and simplifies toolpath setup, so process repeatability is improved and setup time is reduced.

Chip control and productivity in demanding materials

The FM4 chipbreaker is designed to produce short, controllable chips under a range of cutting conditions, aiding chip evacuation and reducing the risk of re-cutting. Improved chip control contributes directly to higher machine uptime and predictable cycle times, enhancing throughput on production runs. The combination of grade and chipformer supports higher feed rates where appropriate, translating into a measurable productivity advantage in serial machining.

Material range and application guidance

This insert is intended for machining groups M and S according to ISO classification; in practice it is well suited to stainless steel (stainless steels) and to heat‑resistant superalloys and titanium where thermal stability and edge security are critical. When paired with appropriate cutting data and coolant strategies, the design reduces the likelihood of edge breakdown and supports consistent part quality. For bespoke applications or borderline materials, testing with representative workpieces is recommended to fine‑tune cutting parameters.

Contact Metav Werkzeuge for specialised cutting data, application advice and availability for Walter Tools inserts — eMail info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: SCMT120404-FM4-WSM20S-WALTER
• Designation: SCMT120404-FM4 WSM20S
• Manufacturer: Walter Tools

Facts

• Size: 12 mm
• Corner radius: 0.4 mm
• Relief angle: 7°
• Plate thickness: 04
• Shape: Square 90°
• Tolerance class: M

Special features

• Grade: WSM20S
• Series: Tiger·tec Silver
• Chipbreaker: FM4
• Material groups: S / M
• Execution: T
• Coating: coated carbide
• Application: stainless steel; heat‑resistant superalloys and titanium

FAQ

Which materials is this insert suitable for?
The SCMT120404-FM4 WSM20S insert from Walter Tools is designed for ISO groups M and S, making it suitable for stainless steel and heat‑resistant superalloys and titanium under appropriate cutting conditions.

How does the FM4 chipbreaker affect machining?
The FM4 chipbreaker ensures compact, controlled chips and supports reliable chip evacuation, which improves process security and reduces the likelihood of chip entanglement during turning operations.

What are the key geometric specifications of the insert?
The insert features a square 90° form with a corner radius of 0.4 mm, a size of 12 mm, a relief angle of 7° and a plate thickness designated as 04, providing a stable cutting edge for repeatable turning.

How does the Tiger·tec Silver coating improve performance?
The Tiger·tec Silver coating on the WSM20S grade increases thermal and abrasive resistance, stabilising the cutting edge and extending tool life when machining challenging stainless steel and superalloys.

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

Protected trademarks and trade names are the property of their respective owners. Brand names are mentioned for explanation only and do not imply any affiliation; the offered item is an original, factory‑new product from the manufacturer Walter Tools.