SCGT09T304-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, a robust MM4 chipbreaker and precise geometry for reliable machining of difficult materials; order the insert directly via Metav Werkzeuge or consult our application specialists for process optimisation.

SCGT09T304-MM4 WSM20S – Indexable insert for boring and external turning with Tiger·tec Silver coating (Walter Tools)

The SCGT09T304-MM4 WSM20S is a square 90° indexable insert designed for demanding turning and boring operations in stainless and heat-resistant alloys.

• Tiger·tec Silver coated grade WSM20S
• Optimised MM4 chip control for stable cutting
• Suitable for rostfreier Stahl and superalloys
• 0.4 mm corner radius with 7° clearance

Consistent tool life from a heat-resistant grade

The coated cemented carbide grade WSM20S from the Tiger·tec Silver family is formulated for extended performance when machining rostfreier Stahl and heat-resistant alloys. The combination of a wear-resistant coating and a substrate engineered for thermal stability reduces flank wear and edge breakdown. As a result, shops benefit from predictable tool life and fewer tool changes, which supports higher uptime and consistent batch quality.

Stable machining through optimised chip control

The MM4 chipbreaker provides controlled chip formation even under elevated cutting temperatures typical of challenging materials. Controlled chip flow reduces the risk of built-up edge and tool overload, supporting steady cutting forces and improved surface integrity. This means smoother cycles and reduced secondary operations, delivering measurable gains in cycle time and component finish.

Precision geometry for reliable dimensional results

With a square 90° form, a 0.4 mm corner radius and a 7° clearance angle, the insert delivers dependable edge strength and repeatable contact conditions in many turning and boring toolholders. These geometric choices support both robustness in interrupted cuts and the generation of consistent axial contact, which helps achieve reproducible dimensions and surface texture with each indexation.

Practical application notes and material scope

The insert is intended for difficult-to-machine alloys and, depending on the chosen geometry, for rostfreier Stahl (ISO group M) as well as superalloys and titanium (ISO group S). The grade’s balanced properties make it suitable where heat resistance and edge stability are required rather than aggressive roughing alone. For new setups, a conservative speed and feed window and progressive optimisation usually yield the best compromise between productivity and tool life.

Contact Metav Werkzeuge for tailored recommendations on the Walter Tools SCGT09T304-MM4 WSM20S and to discuss optimal cutting data and holder selection; eMail: info@metav-werkzeuge.com, Tel: +49 2822 7131930

Technical data

• Article number: SCGT09T304-MM4-WSM20S-WALTER
• Designation: SCGT09T304-MM4 WSM20S
• Product type: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte
• Brand: Walter Tools

Facts

• Clearance angle: 7°
• Corner radius: 0.4 mm
• Insert shape: Square 90°
• Size: 09
• Thickness: T3
• Tolerance class: G
• Chipbreaker: MM4
• Series: Tiger·tec Silver

Special features

• Grade: WSM20S – coated cemented carbide
• Application: Difficult-to-machine materials; depending on geometry also rostfreier Stahl
• Stable chip control for secure edge condition
• Designed for thermal and mechanical load stability

FAQ

Which materials is this insert suitable for?
The SCGT09T304-MM4 WSM20S is specified for machining difficult-to-machine alloys and, depending on geometry, rostfreier Stahl (ISO group M) as well as heat-resistant superalloys and titanium (ISO group S).

What does the MM4 chipbreaker deliver in practice?
The MM4 chipbreaker promotes controlled chip formation and evacuation, reducing built-up edge and stabilising cutting forces when the insert is used under the recommended cutting conditions.

How does the Tiger·tec Silver technology benefit shop performance?
Tiger·tec Silver offers a wear-resistant coated substrate that improves thermal stability and tool life, helping to maintain consistent surface quality and reduce the frequency of insert changes.

Is the insert suitable for interrupted cuts or heavy engagement?
The square 90° shape combined with a 0.4 mm corner radius provides robust edge support for many interrupted and semi-heavy turning tasks, offering good resistance to mechanical shock.

How often should the insert be indexed to maintain accuracy?
Indexing frequency depends on workpiece material and cutting data; regular inspection of edge condition is recommended and the SCGT09T304-MM4 WSM20S should be indexed or replaced when wear affects dimensional control or surface finish.

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

The Walter AG (brand appearance: Walter Tools) is among the world’s leading manufacturers of precision tools for metalworking and is part of the Swedish Sandvik group. Protected trademarks and trade names are the property of their respective owners. Brand names and trademarks are mentioned for explanatory purposes only and do not imply any affiliation between our company and the named manufacturers. The offered item is original, factory-new merchandise of the manufacturer.