SCMT120404-RM4 WSM20S RM4 Wendeplatten - Walter Tools

Combining the Tiger·tec Silver grade WSM20S with the RM4 chipbreaker and a compact square 90° geometry gives a balanced solution for machining stainless steel and heat‑resistant superalloys. Order the SCMT120404‑RM4 WSM20S insert directly via Metav Werkzeuge or ask our consultants if needed.

SCMT120404-RM4 WSM20S – indexable insert for drilling/boring and turning, Tiger·tec Silver, Walter Tools

The SCMT120404‑RM4 WSM20S is an indexable insert designed for reliable performance when machining stainless steel and high‑temperature superalloys in drilling/boring and turning applications

• Tiger·tec Silver coating for enhanced wear resistance
• Optimised RM4 chipbreaker for secure chip control
• Square 90° form, 12 mm size, 0.4 mm corner radius

High process stability for tough materials

The combination of the WSM20S grade and the Tiger·tec Silver technology provides improved resistance to thermal and abrasive wear in demanding environments. This coated carbide grade was developed for materials that tend to form built‑up edges and generate elevated heat, notably stainless steel and heat‑resistant superalloys. The result is a more stable cutting edge, fewer unscheduled tool changes and a consistent surface quality across medium to long production runs. For manufacturing planners this translates into predictable tool life and lower process variability, supporting efficient production cycles.

Consistent chip formation and safer machining

The RM4 chipbreaker is configured to promote controlled chip formation under the cutting conditions typical for tough alloys. Stable chip control reduces the risk of entanglement and helps maintain uninterrupted cycle times, particularly in interrupted cuts or when facing variable material batches. In practice, this means fewer moulder stops and a lower likelihood of built‑up edge formation, which in turn preserves dimensional accuracy and surface finish. The insert’s geometry and grade work together to support secure chip evacuation even under elevated temperatures.

Compact geometry for secure clamping and repeatable results

The square 90° form with a 0.4 mm corner radius and a size of 12 mm offers robustness and good edge stability for general turning and boring tasks. A relief angle of 7° reduces rubbing and cutting forces while the 4 mm thickness contributes to secure seating in standard SCMT toolholders. This geometry is particularly beneficial where multiple indexing is required: the square form yields several usable cutting edges and consistent regrinding dimensions. The insert suits setups that prioritise repeatability and mechanical rigidity, enabling dependable results in serial production.

Contact Metav Werkzeuge today to discuss Walter Tools' Tiger·tec Silver WSM20S inserts and arrange a tailored recommendation for stainless steel machining via info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Article number: SCMT120404-RM4-WSM20S-WALTER
• Designation: SCMT120404-RM4 WSM20S
• Brand: Walter Tools
• Series: Tiger·tec Silver

Facts

• Relief angle: 7°
• Corner radius: 0.4 mm
• Size: 12 mm
• Thickness: 4 mm
• Form: Square 90°
• Tolerance class: M

Special features

• Grade: WSM20S (coated carbide)
• Chipbreaker: RM4
• Material groups: S / M
• Application: stainless steel and heat‑resistant superalloys
• Product type: Indexable insert for drilling/boring and turning

FAQ

Which materials is this insert suitable for?
The WSM20S grade is formulated for stainless steel and heat‑resistant superalloys; the SCMT120404‑RM4 insert supports secure chip formation and edge stability in these groups.

What does the RM4 chipbreaker do?
The RM4 chipbreaker is designed to control chip flow, promoting short, manageable chips and reducing the risk of build‑up under high heat conditions.

What are the key geometric specifications to consider?
The insert features a square 90° shape, 12 mm size, 0.4 mm corner radius, 7° relief angle and 4 mm thickness for stable clamping and multiple usable edges.

Can this insert be used in standard SCMT toolholders?
Yes, the SCMT form corresponds to common ISO toolholders for indexable turning and boring inserts, enabling straightforward integration.

How does the Tiger·tec Silver technology benefit machining?
Tiger·tec Silver provides a balanced coating system that extends wear resistance and improves edge life when machining tough, heat‑generating materials.

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

Protected trademarks and product names are the property of their respective owners. Brand names and trademarks are used solely for explanatory purposes; there is no affiliation between our company and the named brands. The offered item is an original, factory‑new product of the manufacturer Walter Tools.