SPMT09T308-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of a combination of high thermal resistance, consistent edge stability and precise chip control for reliable turning of demanding materials. Benefit from the Tiger·tec Silver coating and the MM4 chipbreaker to maintain productivity and reduce rework. Order directly via Metav Werkzeuge or consult our specialists for application support.

SPMT09T308-MM4 WSM20S turning insert — Tiger·tec Silver grade for rostfreier Stahl and superalloys (Walter Tools)

SPMT09T308-MM4 WSM20S is a square 90° turning insert designed for heavy-duty turning of rostfreier Stahl and heat-resistant alloys, featuring the MM4 chipbreaker and a 0.8 mm corner radius

• Tiger·tec Silver coated carbide
• Optimised MM4 chipbreaker geometry
• For rostfreier Stahl and superalloys
• Square 90° form, 0.8 mm corner radius

High-performance cutting for demanding alloys

The Tiger·tec Silver coating combined with the WSM20S grade provides a balance of thermal resistance and wear protection that supports stable cutting edges when machining rostfreier Stahl and similar alloys. The coated carbide composition reduces heat impact on the cutting edge, which in turn delays crater wear and lowers the risk of built-up edge formation. This results in fewer interruptions for regrinding and a steadier throughput in serial production, especially where temperature and material toughness challenge standard grades.

Optimised chip control and edge security for safer turning

The integrated MM4 chipbreaker geometry and the square 90° configuration deliver controlled chip formation and predictable chip evacuation, improving process security in both continuous and interrupted cuts. A 0.8 mm corner radius and a clearance angle of 11° help distribute cutting forces across a resilient edge, reducing the likelihood of chipping in hostile cutting conditions. For workshop planners, this means fewer scrap parts and longer tool life per edge, which supports a more economical machining flow.

Practical application advice and workshop benefits

The insert’s specification — SPMT09T308-MM4 WSM20S in the Tiger·tec Silver series — suits turning operations where heat generation and material toughness are significant. Use the grade where secure chip formation and edge stability are priorities, such as finishing and semi-finishing rostfreier Stahl or machining heat-resistant superalloys and titanium components. For optimum results, pair the insert with stable toolholders and appropriate coolant strategies; the chosen grade responds well to moderate cutting speeds and careful feed selection to exploit its thermal and mechanical strengths.

For robust performance on rostfreier Stahl and high-alloy materials, contact Metav Werkzeuge for ordering and process consultancy — expert advice and fast supply are available from Metav Werkzeuge.

Technical data

• Article number: SPMT09T308-MM4-WSM20S-WALTER
• Name: SPMT09T308-MM4 WSM20S turning insert
• Manufacturer: Walter Tools

Numbers / core technical data

• Thickness: T3
• Clearance angle: 11°
• Corner radius: 0.8 mm
• Plate form: Square 90°
• Plate size: 09
• Tolerance class: M

Designs / special features

• Series: Tiger·tec Silver
• Grade: WSM20S (coated carbide)
• Chipbreaker: MM4
• Execution: T
• Material groups: S / M (superalloys/titanium and rostfreier Stahl)
• ISO designation: SPMT09T308-MM4 WSM20S

FAQ

What materials is this insert suitable for?
The insert is specified for machining rostfreier Stahl and heat-resistant superalloys/titanium; the WSM20S grade supports secure chip formation in these groups.

How does the MM4 chipbreaker improve performance?
The MM4 geometry ensures controlled chip formation and evacuation, reducing edge load and improving process stability during prolonged cuts.

Which features ensure edge life and stability?
The combination of the Tiger·tec Silver coating, a 0.8 mm corner radius and an 11° clearance angle promotes heat resistance and even force distribution at the cutting edge.

Can this insert run in interrupted cutting conditions?
Yes, the square 90° form and robust grade are designed to tolerate interrupted cuts typical in heavy-duty turning operations.

What is the exact product identifier for ordering?
Order using SKU SPMT09T308-MM4-WSM20S-WALTER to ensure the correct Tiger·tec Silver grade insert is supplied.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for clarification purposes only. There is no affiliation between our company and the named brands. The offered item is original, new goods from the manufacturer.