CCMT09T308-RM4 WMP20S RM4 Wendeplatten - Walter Tools

Take advantage of a robust combination of high process security and consistent edge stability thanks to the Tiger·tec Silver grade and the proven RM4 chipbreaker; the compact geometry with a 0.8 mm corner radius and 7° clearance supports reliable machining of stainless steel and continuous production runs. Order directly via Metav Werkzeuge or request tailored consulting for application-specific parameters.

CCMT09T308-RM4 WMP20S – Turning insert (Rhombus 80°, 7°) for stainless steel | Walter Tools

CCMT09T308-RM4 WMP20S is a coated carbide turning insert designed for medium to robust machining tasks on stainless steel, combining Tiger·tec Silver technology with a dedicated RM4 chip control geometry.

• Tiger·tec Silver coated grade
• RM4 chipbreaker for stable chips
• Rhombus 80° form for versatile turning
• 0.8 mm corner radius for edge strength

Consistent cutting performance for stainless applications

The combination of the WMP20S grade with the Tiger·tec Silver coating delivers a balance of wear resistance and toughness specifically tuned for stainless steel. This cutting material reduces edge wear under high temperatures typical of stainless machining, so the insert maintains a sharp, stable cutting edge for longer cycles. The result is improved process security and fewer tool changes, which translates into measurable gains in productivity for series production.

Geometry engineered for reliable chip control

The insert’s RM4 chipbreaker and rhombic shape ensure controlled chip formation even under variable cutting conditions. The Rhombus 80° profile provides a versatile cutting approach for a wide range of turning operations, while the 0.8 mm corner radius reinforces the cutting edge against mechanical and thermal stress. Together these features reduce the risk of built-up edge and support a consistent surface finish when machining tough stainless alloys.

Practical handling and mounting advantages

With the standard designation and compact plate size, the insert integrates easily into existing turning tool holders, offering quick indexing and low setup complexity. The nominal thickness T3 and standard insert size code facilitate predictable seating and support during intermittent cuts. This leads to reduced downtime and straightforward stock management for workshop environments that value availability and repeatability.

Application guidance for process optimisation

For best results on stainless steel, pair the insert with suitable feeds and cutting speeds that moderate heat input while maintaining chip flow. The coated carbide composition of the WMP20S grade helps to avoid premature edge degradation under the thermal loads typical of stainless turning. Where higher productivity is required, the combination of Tiger·tec Silver and RM4 geometry allows cautious increases in cutting parameters without sacrificing surface quality or tool life.

Contact Metav Werkzeuge for tailored application advice or to secure Walter Tools Tiger·tec Silver inserts for your stainless steel machining needs

Technical Data

• Article number: CCMT09T308-RM4-WMP20S-WALTER
• Designation: CCMT09T308-RM4 WMP20S
• Manufacturer: Walter Tools

Facts

• Free clearance angle: 7°
• Corner radius: 0.8 mm
• Insert form: Rhombus 80°
• Insert size: 09
• Thickness: T3

Special features

• Series: Tiger·tec Silver
• Grade: WMP20S (coated cemented carbide)
• Chipbreaker: RM4
• Intended material: stainless steel
• Product type: Bohr-/Aufbohrwendeschneidplatte / Drehwendeschneidplatte

FAQ

What materials is this insert suited for?
The CCMT09T308-RM4 WMP20S insert is specified for stainless steel and is optimised for medium to robust stainless steel machining thanks to the Tiger·tec Silver grade.

How does the RM4 chipbreaker help in practice?
The RM4 chip control geometry on the Walter Tools insert promotes consistent chip formation and evacuation, reducing the risk of built-up edge when turning stainless steel.

What does the 0.8 mm corner radius mean for tool life?
A 0.8 mm corner radius increases the edge strength and distributes cutting forces, which improves resistance to mechanical and thermal wear during demanding cutting conditions.

Can the insert be used in standard turning holders?
Yes, the insert’s standard Rhombus 80° form and size code enable compatibility with common turning tool holders designed for indexable inserts.

Is this a coated or uncoated grade?
The WMP20S is a coated cemented carbide grade within the Tiger·tec Silver technology, combining coating benefits with a substrate tuned for stainless steel applications.

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

Protected trademarks and trade names are the property of their respective owners. Brand names and registered trademarks are mentioned for explanatory purposes only. There is no affiliation between our company and the mentioned brands. The offered article is an original, brand-new product from the manufacturer Walter Tools.