DCMT11T304-RM4 WSM20S RM4 Wendeplatten - Walter Tools

Take advantage of a high-performance Tiger·tec Silver grade and a dedicated RM4 chipbreaker to achieve stable chip control and extended tool life when machining demanding materials; order the insert directly via Metav Werkzeuge or consult our specialists for cutting-parameter recommendations.

DCMT11T304-RM4 WSM20S indexable turning insert – Rhombic 55° for rostfreiem Stahl & superalloys | Walter Tools

The DCMT11T304-RM4 WSM20S is a 55° rhombic indexable turning insert engineered for heavy-duty machining of rostfreiem Stahl and heat-resistant superalloys in demanding turning operations

• Tiger·tec Silver coated carbide grade WSM20S
• RM4 chipbreaker for controlled chip formation
• Rhombic 55° profile with 0.4 mm corner radius
• 7° relief angle for stable cutting performance

High-performance grade for demanding alloys and rostfreiem Stahl

The combination of the WSM20S grade and the Tiger·tec Silver technology provides a coating system and substrate pairing specifically tuned for temperature resistance and edge strength. This results in improved resistance to built-up edge and thermal degradation when machining rostfreiem Stahl and nickel-based alloys. For production environments that prioritise consistent surface finish and predictable tool life, the coated carbide composition enables higher cutting speeds and fewer tool changes, translating into measurable productivity gains and lower machining costs per part.

Geometry that stabilises the cutting process and improves repeatability

Designed with a Rhombic 55° form and a 0.4 mm corner radius, the insert provides a balance between edge strength and accessibility for common turning profiles. The 7° relief angle reduces friction on the flank face and helps maintain a steady cutting force, while the RM4 chipbreaker promotes short, controlled chips under a wide range of feeds. Together, these geometry choices reduce vibration and improve dimensional repeatability, making the insert suitable for both uninterrupted and slightly interrupted cutting conditions where process stability is essential.

Productivity and tool life benefits from tailored chip control

The dedicated RM4 chip control geometry is optimised to evacuate swarf efficiently and to preserve the integrity of the cutting edge during transient thermal loads. In practice, this means longer intervals between indexing and a lower risk of machine downtime caused by chip-related issues. The result is a clear cost-benefit in medium- to high-volume turning, where the coated substrate of the insert combines thermal protection with robust wear behaviour to support consistent part quality over extended cycles.

Practical compatibility and recommended use cases

The insert suits turning applications where rostfreiem Stahl and heat-resistant superalloys (ISO groups M and S) are predominant. Typical uses include component finishing and semi-finishing on turned shafts, fittings and parts with tight surface requirements. The insert is manufactured in the T3 thickness variant and fits holders that accept the DCMT 11-size geometry; pairing with appropriate toolholders and adjusted cutting data will ensure optimum results. For tailored recommendations on feeds and speeds for specific materials, Metav Werkzeuge can provide application advice and parameter tables.

Contact Metav Werkzeuge today for tailored cutting data and application support for Walter Tools' Tiger·tec Silver inserts, or request a recommendation for the DCMT11T304-RM4 WSM20S to optimise your turning process

Technical data

• Article number: DCMT11T304-RM4-WSM20S-WALTER
• Label: Drehwendeschneidplatte DCMT11T304-RM4 WSM20S Walter Tools
• Manufacturer: Walter Tools

Facts

• Shape: Rhombus 55°
• Corner radius: 0.4 mm
• Relief angle: 7°
• Plate size: 11 mm
• Thickness: T3
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Grade: WSM20S (coated carbide)
• Chipbreaker: RM4
• Material suitability: S / M (superalloys / rostfreiem Stahl)
• Execution: T

FAQ

What materials is this insert suitable for?
The DCMT11T304-RM4 WSM20S insert is intended primarily for rostfreiem Stahl and heat-resistant superalloys, corresponding to ISO groups M and S.

What chip control does the insert provide?
The RM4 chipbreaker on the Walter Tools insert promotes reliable, short chips and consistent evacuation to support uninterrupted machining.

What are the key geometric specifications?
The insert features a Rhombic 55° form, a 0.4 mm corner radius and a 7° relief angle to combine edge strength with stable cutting.

Which series and coating are used on this insert?
The insert belongs to the Tiger·tec Silver series with the WSM20S coated-carbide grade, optimised for thermal resistance and edge stability.

Which holder size is compatible with this insert?
The DCMT11T304-RM4 geometry corresponds to standard DCMT 11-size turning holders used in conventional indexable turning tool systems.

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

Walter Tools (Walter AG) is a leading manufacturer of precision tooling for metalworking and operates under the brand Walter Tools; the company delivers advanced solutions for demanding machining tasks and is part of a wider industrial group. Marked brand names and trademarks are the property of their respective owners. The mentioned brand is cited for clarification; there is no affiliation implied between our company and the listed manufacturers.