SPMT09T304-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger‑tec Silver coating and a secure MM4 chipformer for reliable machining of tough alloys and stainless steel; choose the robust SPMT09T304‑MM4 WSM20S insert for uninterrupted production and order directly via Metav Werkzeuge or consult our advisors for cutting data.

SPMT09T304-MM4 WSM20S — Drehwendeschneidplatte for stainless steel and superalloys (Walter Tools)

SPMT09T304-MM4 WSM20S is a square turning insert engineered for productive and secure turning in stainless steel and heat‑resistant superalloys

• Tiger‑tec Silver coating for heat resistance
• WSM20S grade for tough stainless steel
• MM4 chipformer for stable chip control
• Square 90° geometry for robust shoulder turning

Higher process reliability with advanced coating

The insert’s Tiger‑tec Silver coating and the WSM20S grade are designed to deliver consistent performance when machining demanding materials. The coated cemented carbide increases thermal resistance and preserves the cutting edge under elevated temperatures, which minimises unplanned tool changes and supports longer uninterrupted cycles. For workshops processing stainless steel or high‑temperature alloys, this combination reduces the risk of built‑up edge and contributes to repeatable component quality.

Engineered geometry for controlled chips and surface finish

A precisely shaped MM4 chipformer together with a 0.4 mm corner radius and square 90° form ensure reliable chip control and stable tool engagement. The 11° free angle moderates cutting forces and improves entry behaviour at shoulders, while the T3 plate thickness provides mechanical stiffness for secure clamping. These geometry choices translate directly into fewer interruptions, improved surface integrity and predictable tool life, which supports leaner process planning on the shop floor.

Practical application guidance and efficient production

The SPMT09T304‑MM4 WSM20S insert is aimed at operations working with stainless steel and nickel‑based or titanium‑based superalloys where heat generation and edge stress are critical. In such environments the insert’s heat‑resistant coating and robust chip control permit higher metal removal rates with maintained surface quality. For customers uncertain about cutting parameters, technical consultation is available to match speeds, feeds and depths to the specific machine setup, enabling faster ramp‑up and reliable cycle times while safeguarding the component finish.

Contact Metav Werkzeuge for tailored cutting data and secure supply of original Walter Tools SPMT09T304‑MM4 WSM20S inserts and expert application support

Technical data

• Article number: SPMT09T304‑MM4‑WSM20S‑WALTER
• Description: Drehwendeschneidplatte / Turning insert SPMT09T304‑MM4 WSM20S
• Manufacturer: Walter Tools

Data

• Free angle: 11°
• Corner radius: 0.4 mm
• Plate size: 09
• Thickness: T3
• Shape: Square 90°

Special features

• Coating: Tiger‑tec Silver
• Grade: WSM20S
• Chipformer: MM4
• Tolerance class: M
• Application: machining stainless steel and heat‑resistant superalloys

FAQ

What materials is the insert suitable for?
The SPMT09T304‑MM4 WSM20S insert is designed primarily for stainless steel and heat‑resistant superalloys (ISO groups M and S), offering enhanced thermal stability and chip control.

How does the MM4 chipformer improve machining?
The MM4 chipformer helps to break and evacuate chips reliably, reducing rework and improving surface finish when machining demanding materials with the SPMT09T304‑MM4 WSM20S.

What is the significance of the 0.4 mm corner radius?
A 0.4 mm corner radius balances edge strength and surface finish: it increases robustness at interrupted cuts while still enabling fine surface quality on shoulders and profiles.

Can this insert be used for finishing and roughing?
Depending on geometry and chosen cutting data, the insert can be applied for both roughing and finishing operations; consult cutting parameters to match the intended operation and material.

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

Walter Tools: The Walter AG (brand: Walter Tools) with headquarters in Tübingen is one of the world’s leading manufacturers of precision metal‑cutting tools and is part of the Swedish Sandvik Group. Protected trademarks and product names are the property of their respective owners. Mentioned brand names serve explanatory purposes only; there is no affiliation implied. The offered article is an original, factory‑new product of the manufacturer.