SCMT120408-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Benefit from the combination of a Tiger·tec Silver coating, optimised MM4 chip control and a robust 90° square geometry for consistent, high-quality turning of stainless steels and superalloys. Order the SCMT120408-MM4 WSM20S directly via Metav Werkzeuge or consult our specialists for tailored cutting data.

SCMT120408-MM4 WSM20S — Square indexable insert (Tiger·tec Silver) by Walter Tools

The SCMT120408-MM4 WSM20S is a square 90° indexable insert engineered for heavy-duty turning and boring of stainless steels and heat-resistant superalloys, delivering stable chip formation and long tool life.

• Tiger·tec Silver coating for thermal resilience
• Optimised MM4 chipbreaker for controlled chips
• 90° square geometry with 0.8 mm corner radius
• Suitable for stainless steels and superalloys

Consistent cutting performance through advanced coating technology

The combination of the Tiger·tec Silver coating and the WSM20S grade ensures enhanced resistance to heat and flank wear when machining demanding materials. The coating reduces friction at the cutting edge and improves abrasive resistance, which translates into fewer edge failures and longer service intervals. For workshop managers and CNC programmers this means more predictable tool life, less unscheduled downtime and a steadier surface finish on components machined from stainless steels and nickel-based alloys.

Reliable chip control for safer, cleaner operations

Built around an MM4 chipbreaker, this insert promotes controlled chip formation even where materials tend to produce long, stringy swarf. The geometrical combination of a 7° clearance angle and a 0.8 mm corner radius strengthens the cutting edge and supports stable cutting forces. Controlled chips reduce the risk of workpiece damage and improve machine uptime, which benefits production lines that require repeatable, safe machining of complex shapes.

Robust geometry that boosts process security and versatility

A 90° square insert offers four usable cutting edges and is suitable for a wide range of turning and light boring operations. The insert’s 12 size and 04 plate thickness provide a balance between rigidity and access in confined toolholder setups. The format is especially valuable where reliable seatings and repeatable indexing are required, enabling economical use of each insert while maintaining consistent dimensional accuracy during batch production.

Clear application guidance and material mapping

The grading follows common ISO groups: M indicates suitability for stainless steels, while S denotes performance in heat-resistant superalloys and titanium. This mapping helps in selecting the correct feed and speed window for process planning: prioritise moderate feeds and stable coolant strategies for stainless steels, and focus on flank protection when machining titanium alloys. The insert’s configuration therefore supports both technical planners and shopfloor operators in achieving efficient, reproducible results.

Contact Metav Werkzeuge for a machining recommendation based on Walter Tools' SCMT120408-MM4 WSM20S or to request process parameters tailored to specific stainless steel or superalloy grades — eMail: info@metav-werkzeuge.com; Tel: +49 2822 7131930

Technical Data

• SKU: SCMT120408-MM4-WSM20S-WALTER
• Designation: SCMT120408-MM4
• Product type: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte
• Brand: Walter Tools
• Series: Tiger-tec Silver
• Grade: WSM20S

Facts

• Insert form: Square 90°
• Insert size: 12
• Corner radius: 0.8 mm
• Relief angle: 7°
• Thickness: 04
• Tolerance class: M

Special features

• Coating: Tiger·tec Silver
• Chipbreaker: MM4
• Suitable materials: stainless steels (M), superalloys and titanium (S)
• Intended use: Turning / boring applications
• Wendeplatte ISO designation: SCMT120408-MM4 WSM20S

FAQ

What materials is this insert best suited for?
The SCMT120408-MM4 WSM20S insert is designed for stainless steels and heat-resistant superalloys (ISO groups M and S), offering thermal resilience and stable chip control.

How does the MM4 chipbreaker improve machining?
The MM4 chipbreaker shapes chips into short, controllable segments, reducing entanglement and improving safety and surface quality when machining tough materials.

What advantage does the Tiger·tec Silver coating provide?
The Tiger·tec Silver coating increases heat resistance and wear protection at the cutting edge, extending edge life and enabling more consistent production results under thermal stress.

Can the 90° square geometry be used for light profiling?
Yes, the 90° square form provides four indexable edges and is suitable for general turning and light profiling where rigidity and edge strength are priorities.

Is the insert compatible with standard toolholders for SCMT inserts?
This insert matches standard toolholder pockets designed for SCMT120408-type indexable inserts; ensure correct clamping and seat condition for repeatable performance.

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

Walter AG (brand: Walter Tools) with headquarters in Tübingen is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Sandvik group. Protected trademarks and trade names remain the property of their respective owners. Brand names are mentioned for explanation only. The offered item is original, factory-new merchandise of the manufacturer.