SCMT09T308-MM4 WMP20S WMP20S Wendeplatten - Walter Tools

Take advantage of the combination of reliable chip control, consistent edge life and the productivity of the Tiger·tec Silver grade for efficient rostfreier Stahl machining; order directly via Metav Werkzeuge or ask the consultants for tailored recommendations.

SCMT09T308-MM4 WMP20S — Walter Tools square indexable turning/boring insert, Tiger·tec Silver, for rostfreier Stahl

SCMT09T308-MM4 WMP20S is a square 90° indexable insert designed for robust rostfreier Stahl turning and boring applications, offering stable chip formation and durable performance under medium to heavy cutting conditions.

Tiger·tec Silver coating Optimised for rostfreier Stahl (ISO group M) Stable chip formation and edge life Square 90° insert, 0.8 mm corner radius

Stable chip control that reduces downtime

The insert features the MM4 chipbreaker, which promotes predictable chip formation when machining rostfreier Stahl — a material class prone to long, stringy chips and high heat. The controlled chips reduce the risk of tool interference and workpiece damage, leading to fewer interruptions on the production floor. For operators unfamiliar with chipbreaker terminology: this is a dedicated surface geometry that shapes the chip as it forms, directing it away from the cutting zone and improving process reliability. The result is measurable process stability and reduced tool-change frequency.

Coating and grade for longer tool life in demanding conditions

The Tiger·tec Silver technology combined with the WMP20S grade provides a coated cemented-carbide composition tailored for rostfreier Stahl. This combination improves wear resistance and supports a stable cutting edge under elevated temperatures typical of that material group. In practice, this means extended tool life and more consistent part quality over longer production runs. The coated substrate helps to limit built-up edge formation, which is a common cause of premature wear when machining tough, heat-generating alloys.

Geometry designed for accuracy and flexibility

With a square 90° form, 0.8 mm corner radius and a 7° clearance, the insert allows secure positioning in standard toolholders while offering the versatility to perform both finishing and light roughing tasks. The 0.8 mm radius balances edge strength and the ability to achieve acceptable surface finish; larger radii improve durability, smaller radii enhance finish. The T3 thickness specification ensures sufficient support for axial and radial cutting forces typical in boring and turning, helping to maintain dimensional accuracy across batch production.

Practical benefits and recommended use cases

This indexable insert is intended for shops focusing on rostfreier Stahl components where repeatability and process security are priorities. Typical applications include shaft and sleeve turning, interrupted cuts in repair work and batch production where tool-change intervals and consistent surface quality influence throughput. The insert’s combination of chip control, coated grade and robust geometry translates into lower overall machining costs by reducing scrap, stabilising cycle times and simplifying tool inventory management.

For reliable rostfreier Stahl machining with Walter Tools’ Tiger·tec Silver inserts, contact Metav Werkzeuge to discuss application-matched tool selection and ensure optimal process performance; Metav Werkzeuge can be reached at info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: SCMT09T308-MM4-WMP20S-WALTER
• SKU: SCMT09T308-MM4-WMP20S-WALTER
• Product type: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte
• Brand: Walter Tools
• Series: Tiger-tec Silver

Facts

• Free angle: 7°
• Corner radius: 0.8 mm
• Insert size designation: 09
• Thickness: T3

Special features

• Chipbreaker: MM4
• Grade: WMP20S
• Geometry: Square 90°
• Coating technology: Tiger·tec Silver
• Tolerance class: M
• Suitable for: rostfreier Stahl (ISO group M)

FAQ

What materials is this insert suitable for? The SCMT09T308-MM4 WMP20S insert is specified for rostfreier Stahl (ISO group M) and is optimised to handle the toughness and heat generation typical of these alloys.

How does the MM4 chipbreaker help in practice? The MM4 chipbreaker on this Walter Tools insert shapes and controls chips during cutting, reducing chip entanglement and contributing to steadier machining cycles and fewer stoppages.

Can this insert be used for both finishing and roughing? Yes, the square 90° geometry with a 0.8 mm corner radius allows flexibility for light roughing and finishing operations while maintaining edge strength.

What is the advantage of the Tiger·tec Silver coating on this grade? Tiger·tec Silver enhances wear resistance and thermal stability, meaning the WMP20S grade maintains a stable cutting edge longer during continuous rostfreier Stahl machining.

Which toolholders are compatible with this insert form? Standard holders designed for SCMT-style square 90° inserts are compatible; correct clamping and seat condition are essential to achieve the stated performance of the SCMT09T308-MM4 WMP20S.

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