SCMT09T308-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and a precise MM4 chipbreaker for reliable performance in demanding materials; the insert’s square 90° form with a 0.8 mm corner radius ensures long tool life and consistent surface finish. Order the product directly via Metav Werkzeuge or ask our consultants if needed.

SCMT09T308-MM4 WSM20S indexable insert by Walter Tools — Tiger·tec Silver coating, for rostfreier Stahl and superalloys

The SCMT09T308-MM4 WSM20S is a square 90° indexable insert designed for drilling, boring and turning applications in rostfreier Stahl and heat-resistant superalloys and titanium.

• Tiger·tec Silver coated carbide grade WSM20S
• Optimised MM4 chipbreaker for stable chips
• Square 90° form with 0.8 mm corner radius
• 7° clearance angle for secure cutting performance

Increase throughput with stable chip control and higher productivity

The combination of the WSM20S grade and the Tiger·tec Silver coating is engineered to provide consistent process security when machining demanding materials. The MM4 chipbreaker promotes controlled chip formation, reducing the risk of built-up edge and interruptions during operation. For rostfreier Stahl and nickel-based alloys, where chips can weld and cooling is challenging, this insert helps maintain stable cutting forces and longer tool cycles, contributing to a measurable increase in machining efficiency and reduced downtime.

Achieve reliable surface quality and extended tool life

The insert’s square 90° geometry together with a 0.8 mm corner radius balances cutting-edge strength and surface finish. The 7° clearance angle prevents rubbing while ensuring a stable engagement with the workpiece, which supports repeatable dimensional accuracy. Coated carbide with the Tiger·tec Silver system improves heat resistance and wear performance, so fewer index changes are required and consistent component quality can be maintained over longer series runs.

Clear selection and straightforward application across materials

With a plate size of 09 and thickness T3, this insert suits compact toolholders and operations that demand rigidity. The designation and geometry make it suitable for a range of machining tasks, from light finishing to heavier interrupted cuts in superalloys. Technical terms clarified: a chipbreaker shapes chips to avoid entanglement; clearance angle is the relief behind the cutting edge that prevents rubbing; corner radius affects strength and surface finish. These features together make the insert a pragmatic choice for workshops requiring dependable performance in rostfreier Stahl and high-temperature alloys.

Contact Metav Werkzeuge for tailored application advice and secure supply of Walter Tools inserts; email info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: SCMT09T308-MM4-WSM20S-WALTER
• Designation: SCMT09T308-MM4 WSM20S
• Brand: Walter Tools
• Series: Tiger·tec Silver
• Grade: WSM20S
• Chipbreaker: MM4

Core specifications

• Clearance angle: 7°
• Corner radius: 0.8 mm
• Shape: Square 90°
• Plate size: 09
• Thickness: T3
• Tolerance class: M

Materials & features

• Suitable for: rostfreier Stahl (M)
• Suitable for: Superalloys and titanium (S)
• Coating: Tiger·tec Silver
• Material type: Coated carbide
• Application: Drilling, boring and turning

FAQ

Which materials is this insert suitable for?
The SCMT09T308-MM4 WSM20S insert is specified for rostfreier Stahl and for heat-resistant superalloys and titanium, corresponding to ISO groups M and S.

What advantage does the MM4 chipbreaker provide?
The MM4 chipbreaker on this Walter Tools insert promotes stable chip formation and easier evacuation, which reduces the risk of built-up edge and improves process consistency when machining sticky materials.

How does the corner radius affect performance?
A corner radius of 0.8 mm increases edge strength compared with sharper radii, improving resistance to edge chipping and helping to achieve a consistent surface finish under varying cutting conditions.

For which operations is the insert intended?
The geometry and designation make it suitable for drilling, boring and turning tasks; the square 90° form allows robust positioning for a range of cutting strategies.

What benefits does the Tiger·tec Silver coating deliver?
Tiger·tec Silver coating enhances thermal resistance and wear behaviour of the coated carbide grade WSM20S, resulting in improved tool life and steady cutting performance in demanding materials.

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

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