CCMT120408-RM4 WMP20S RM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating and the RM4 chipbreaker for stable chip control and extended tool life; order the insert directly via Metav Werkzeuge or consult our specialists for application advice.

CCMT120408-RM4 WMP20S – indexable turning insert for stainless steel by Walter Tools

CCMT120408-RM4 WMP20S is a coated carbide turning insert engineered for reliable machining of stainless steel in medium to robust cutting conditions

• Tiger·tec Silver coated carbide
• Designed for stainless steel machining
• RM4 chipbreaker for controlled chips
• Rhombic CCMT 80° with 0.8 mm radius

Extended edge life and consistent results for stainless steel

The Tiger·tec Silver coating paired with the WMP20S grade provides a balanced combination of wear resistance and toughness that supports machining of stainless steel without premature flank wear. By reducing friction at the cutting edge, the coating helps to lower heat generation and the risk of built-up edge formation. For production environments where repeatability matters, this results in fewer tool changes and more predictable component quality, which directly supports process efficiency and reduces unplanned downtime.

Geometry and chip control that improve surface quality

The rhombic CCMT 80° geometry, combined with the RM4 chipbreaker and a 0.8 mm corner radius, delivers secure chip formation and stable cutting behaviour. The 7° clearance angle reduces rubbing on the flank, which helps maintain a clean cutting action and supports a better surface finish on difficult-to-machine alloys. For users less familiar with insert technology: the chipbreaker channels chips away from the cutting zone, preventing entanglement and enabling safer, faster machining cycles with fewer interruptions.

Robust design for productivity and predictable tool life

Built as a medium-duty solution within the Tiger·tec Silver family, this insert offers a reliable balance between cutting-edge strength and wear protection, making it suitable for a wide range of stainless-steel applications under varying cutting parameters. The standard CCMT size and thickness contribute to mechanical rigidity in the holder, which minimises vibration and stabilises cutting forces. For workshops seeking a pragmatic improvement in throughput, the WMP20S grade supports longer tool life and consistent component tolerances, contributing to lower overall machining costs.

For technically optimised stainless-steel turning with Walter Tools' Tiger·tec Silver inserts, contact Metav Werkzeuge for specification support or to place an order via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• SKU: CCMT120408-RM4-WMP20S-WALTER
• Designation: CCMT120408-RM4 WMP20S
• Manufacturer: Walter Tools
• Series: Tiger·tec Silver

Facts

• Size: 12
• Thickness: 04
• Corner radius: 0.8 mm
• Clearance angle: 7°
• Insert shape: Rhombus 80°
• Chipbreaker: RM4

Special features

• Coating: Tiger·tec Silver
• Grade: WMP20S (coated carbide)
• Material application: suitable for stainless steel
• Intended use: medium to robust cutting conditions

FAQ

Which materials is this insert suitable for?
The CCMT120408-RM4 WMP20S insert from Walter Tools is specifically designed for stainless steel machining and performs best under medium to robust cutting conditions.

How does the Tiger·tec Silver coating benefit machining?
The Tiger·tec Silver coating on the WMP20S grade reduces friction and heat at the cutting edge, improving wear resistance and supporting more stable cutting when machining stainless steel.

What is the effect of the RM4 chipbreaker?
The RM4 chipbreaker promotes consistent chip formation and evacuation, which helps to maintain surface quality and reduces the likelihood of chip-related interruptions during turning.

Why is the 0.8 mm corner radius important?
A 0.8 mm corner radius increases edge strength and reduces the risk of edge chipping in interrupted or heavy cuts, contributing to longer insert life and steadier component tolerances.

Is the CCMT120408-RM4 compatible with standard toolholders?
The CCMT geometry follows common insert standards and is compatible with holders designed for CCMT inserts; users should verify seat and clamping compatibility with their specific holder.

Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen

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