CNMG120412-MM5 WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the combination of process security, Tiger·tec Silver wear resistance and optimised chip control for reliable production when machining stainless steels and heat‑resistant alloys. Order the CNMG120412‑MM5 WSM20S indexable turning insert directly via Metav Werkzeuge or consult our advisors for application‑specific guidance.

CNMG120412-MM5 WSM20S indexable turning insert — Tiger·tec Silver, for stainless steels and superalloys

The CNMG120412-MM5 WSM20S is an indexable turning insert designed for heavy‑duty machining of stainless steels and heat‑resistant superalloys, combining a robust negative geometry with a large corner radius for stable cutting.

• Tiger·tec Silver coated carbide grade WSM20S
• Optimised chip control for tough materials
• 0° negative geometry for stable cutting
• 1.2 mm corner radius for robust edge

Reliable performance in demanding materials

The coated carbide WSM20S grade from the Tiger·tec Silver series has been developed for machining materials that generate high temperatures and tend to work‑harden. Its combination of a wear‑resistant coating and a substrate tuned for thermal stability delivers process security and consistent edge life when working with stainless steels (ISO group M) and heat‑resistant alloys (ISO group S). The result is fewer interruptions in production and more predictable tool change cycles, which supports higher overall productivity.

Geometry that protects the cutting edge and stabilises cutting

The 0° negative geometry and the rhombus 80° form give this insert high mechanical strength at the cutting edge. Together with the 1.2 mm corner radius, the geometry reduces the risk of chipping under interrupted cuts and high radial loads, while the MM5 chipbreaker design promotes controlled chip formation. For manufacturers requiring secure, repeatable results, this combination improves robustness without sacrificing the ability to achieve acceptable surface finishes.

Improved productivity and surface quality with controlled chips

Optimised chip control reduces rework and machine downtime. The MM5 chipbreaker, matched to the Tiger·tec Silver grade, directs chips away from the cutting zone and helps maintain a stable cutting temperature. This contributes to an improved surface quality and more consistent dimensional accuracy during long runs. In practice, the insert supports productive machining strategies for components where surface integrity and repeatability are critical.

Application support and selection guidance

For turning operations on components made from stainless steels and superalloys, select feeds and depths of cut that suit the larger 1.2 mm corner radius to take advantage of increased edge strength. The negative relief makes the insert well suited to roughing and semi‑finishing passes under higher radial engagement. If further machining data is required or if there is uncertainty about holder compatibility, Metav Werkzeuge provides application advice and can recommend optimal cutting parameters based on the workpiece material and machine capability. The indexable insert’s grade and geometry minimise unexpected wear mechanisms and support a predictable machining process.

For machining challenges involving stainless steels and superalloys, contact Metav Werkzeuge to obtain the CNMG120412‑MM5 WSM20S from Walter Tools and benefit from tailored application recommendations.

Technical Data

• SKU: CNMG120412‑MM5‑WSM20S‑WALTER
• Designation: CNMG120412‑MM5 WSM20S
• Series: Tiger·tec Silver
• Manufacturer: Walter Tools

Facts

• Corner radius: 1.2 mm
• Shape: Rhombus 80°
• Relief angle: 0° (negative)
• Insert size: 12
• Tolerance class: M
• Thickness code: 04

Special features

• Coated carbide grade (Tiger·tec Silver)
• Grade: WSM20S
• Chipbreaker: MM5
• Suitable for ISO group M (stainless steels)
• Suitable for ISO group S (heat‑resistant superalloys and titanium)
• Robust negative geometry for interrupted cuts
• Designed for stable chip formation and long tool life

FAQ

What materials is this insert suitable for? The CNMG120412‑MM5 WSM20S indexable turning insert is optimised for stainless steels (ISO group M) and heat‑resistant superalloys/titanium (ISO group S) due to its Tiger·tec Silver coating and thermal‑stable substrate.

How does the 1.2 mm corner radius affect performance? A 1.2 mm corner radius increases edge strength and resistance to chipping, making the insert well suited to heavier cuts and applications where mechanical robustness is required.

What is the benefit of the 0° negative relief? The 0° negative relief provides a mechanically strong cutting edge, improving stability during interrupted cuts and heavy radial loads; this makes the insert dependable in demanding turning operations.

Which chipbreaker is integrated and what does it deliver? The MM5 chipbreaker promotes controlled chip formation and evacuation, supporting consistent surface finish and reduced risk of built‑up edge when machining difficult materials.

Can the insert be used for finishing passes? Yes, the insert can be used for semi‑finishing and finishing where the combination of grade and geometry meets the process requirements; selection of feed and depth of cut should take the corner radius into account for the desired surface quality.

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

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