DCMT11T302-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Taking advantage of the combination of thermal-stable Tiger·tec Silver coating and an optimised MM4 chipbreaker delivers reliable chip control and extended tool life for tough materials; order directly via Metav Werkzeuge or request specialist advice if needed.

DCMT11T302-MM4 WSM20S turning insert — rhombic 55°, Tiger·tec Silver (Walter Tools)

A DCMT11T302-MM4 WSM20S turning insert engineered for demanding machining of stainless steels and heat-resistant alloys, combining a fine corner radius with an optimised chipbreaker for consistent surface quality

• Tiger·tec Silver coating for thermal stability
• Optimised MM4 chipbreaker for stable chips
• Rhombic 55° shape for versatile turning
• 0.2 mm corner radius for fine finishing

Consistent performance on stainless steels and superalloys

The WSM20S grade, housed in the Tiger·tec Silver series, is formulated for the thermal and mechanical demands of stainless steels and heat-resistant alloys. Its coating technology improves heat resistance and reduces adhesion, which in turn helps maintain a stable cutting edge under high temperatures. For production environments where component integrity and repeatability matter, this insert supports predictable tool life and reduced rework rates, translating into improved process stability and fewer unplanned interruptions.

Geometry that enhances surface quality and dimensional control

The rhombic 55° form and a 0.2 mm corner radius yield a balance between accessibility and finish capability. The 55° shape permits flexible approach angles on external turning operations, while the small corner radius enables fine finishing passes with reduced cutting forces. A 7° clearance angle minimises rubbing and helps preserve the edge geometry during light to medium cuts, making the insert suitable for finishing or semi-finish passes where consistent surface integrity and dimensional control are required.

Improved chip control and extended tool life through design

The MM4 chipbreaker is tuned to promote controlled chip formation in tougher materials that can otherwise form long or stringy chips. Combined with the Tiger·tec Silver coating, the insert lowers temperature at the cutting edge and resists built-up edge formation. The result is smoother chip evacuation, fewer interruptions for chip clearing and a reduction in flank wear—factors that contribute to longer effective tool life and more productive machining cycles in series production.

Practical application guidance for reliable machining

This indexable insert fits typical holders for DCMT geometries and performs well in stable setups and rigid toolholding. It is particularly suited to turning operations involving stainless steels and heat-resistant superalloys where thermal stability and edge robustness are priorities. For optimised results, pairing the insert with appropriate cutting parameters, coolant strategies and a secure clamping system is recommended. For further process tuning or application-specific parameters, Metav Werkzeuge offers technical consultation to match the insert to the machining task.

For demanding stainless and high-temperature alloy applications, contact Metav Werkzeuge for tailored advice on Walter Tools Tiger·tec Silver inserts — email info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: DCMT11T302-MM4-WSM20S-WALTER
• SKU: DCMT11T302-MM4-WSM20S-WALTER
• Designation: DCMT11T302-MM4 WSM20S
• Manufacturer: Walter Tools
• Product type: Turning insert (indexable)
• Grade / Series: WSM20S, Tiger·tec Silver

Core data

• Clearance angle: 7°
• Corner radius: 0.2 mm
• Shape: Rhombic 55°
• Size: 11 mm
• Thickness: T3
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver (coated carbide)
• Chipbreaker: MM4
• Material suitability: S / M (heat‑resistant alloys / stainless steels)
• Application focus: Heavy and difficult-to-cut materials, depending on geometry

FAQ

Which materials is this insert designed for?
The DCMT11T302-MM4 WSM20S turning insert (Walter Tools) is designed primarily for stainless steels and heat‑resistant superalloys, reflecting the S / M material suitability of its grade.

What advantage does the MM4 chipbreaker offer?
The MM4 chipbreaker produces controlled chips and improves evacuation in tough materials, reducing interruptions and promoting a more consistent cutting process with the WSM20S grade.

How does the Tiger·tec Silver coating benefit machining?
Tiger·tec Silver increases thermal resistance and reduces adhesion at the cutting edge, which helps limit built‑up edge and extend tool life when machining heat‑generating workpieces.

What does the rhombic 55° geometry mean for operations?
The rhombic 55° shape allows flexible approach angles for a variety of external turning tasks and, with a 0.2 mm corner radius, supports fine finishing with stable dimensional results.

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

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