CCMT120408-MM4 WMP20S WMP20S Wendeplatten - Walter Tools

Take advantage of high process reliability and consistent edge life delivered by a coated carbide grade designed for tough applications on stainless steels; the combination of Tiger-tec Silver technology and an MM4 chipbreaker supports secure chip formation and reduced built-up edge, improving process stability in serial turning operations. Order this insert via Metav Werkzeuge or contact the Metav team for application support and cutting data.

CCMT120408-MM4 WMP20S indexable insert for turning – Tiger-tec Silver, MM4 chipbreaker, Walter Tools

A CCMT120408-MM4 WMP20S indexable insert engineered for turning and boring operations, primarily optimised for machining stainless steels under medium to robust conditions

• Tiger-tec Silver coating for extended tool life
• Optimised chip control with MM4 chipbreaker
• Rhombus 80° shape for versatile turning
• 0.8 mm corner radius and 7° relief angle

Reliable performance for stainless steel turning

The coated cemented carbide grade WMP20S, produced with Tiger-tec Silver technology, is formulated to tackle the specific challenges of stainless steels (ISO group M). These materials typically demand secure chip formation and resistance to built-up edge; the chosen grade provides a balanced combination of toughness and thermal resistance to maintain a stable cutting edge. The integrated MM4 chipbreaker assists in producing short, controllable chips in interrupted cuts and continuous turning, which reduces rework and increases machine uptime. This results in a measurable improvement in process reliability and repeatability for routine shop-floor applications.

Geometry that improves edge strength and versatility

The Rhombus 80° geometry with a 0.8 mm corner radius and a 7° relief angle offers a compromise between strength and cutting accessibility. The rhombic shape permits multiple indexings for economical tool life, while the moderate corner radius supports both light finishing cuts and more robust roughing passes without premature edge chipping. The 7° rake/release provides a stable contact angle that reduces tendency to dig-in on tough workpiece materials, preserving surface quality and lowering the risk of work-hardened layers developing at the cut edge. In practical terms, this geometry translates into fewer tool changes and more predictable component tolerances.

Practical integration and application guidance

Designated CCMT120408-MM4, this insert is supplied in the standard format suitable for most turning toolholders that accept the CCMT style; the execution marked as T denotes the intended configuration. The assortment of measurable characteristics — shape, corner radius and chipbreaker — should be matched to the intended operation: the MM4 pattern is favourable where short chip control is required and where stainless steel chips must be fragmented to avoid entanglement. For optimisation of cutting parameters and holder selection, contact Metav Werkzeuge for tailored advice and further technical details. The Metav team can provide recommended feeds and speeds based on machine capability and workpiece specifics.

Contact Metav Werkzeuge for application-specific recommendations and ordering of Walter Tools CCMT120408-MM4 WMP20S inserts with Tiger-tec Silver technology through Metav Werkzeuge; expert consultation and cutting-data support are available by email or phone

Technical data

• Article number: CCMT120408-MM4-WMP20S-WALTER
• Designation: CCMT120408-MM4 WMP20S
• Brand: Walter Tools
• Product type: Drilling/boring and turning indexable insert
• Execution: T

Core specifications

• Series: Tiger-tec Silver
• Grade: WMP20S
• Shape: Rhombus 80°
• Plate size: 12
• Thickness: 04
• Corner radius: 0.8 mm
• Relief angle: 7°
• Chipbreaker: MM4
• Tolerance class: M

Materials & features

• Sort: WMP20S (coated cemented carbide)
• Suitable application: stainless steels (ISO group M)
• Key functions: secure chip formation, stable cutting edge
• Typical uses: turning and boring on stainless materials

FAQ

What materials is this insert designed for?
This Walter Tools insert is intended for machining stainless steels (ISO group M); the WMP20S grade and Tiger-tec Silver technology support secure chip formation in these materials.

How does the MM4 chipbreaker affect performance?
The MM4 chipbreaker produces controllable, short chips that reduce chip entanglement and improve surface quality during turning operations in stainless steels.

What does the CCMT120408-MM4 designation indicate?
The designation refers to the insert geometry and size: CCMT format, 12 mm size, thickness code 04, corner radius code 08 and MM4 chipbreaker configuration.

Is this insert suitable for finishing passes?
Yes; the moderate 0.8 mm corner radius allows for finishing and semi-finishing, while still providing sufficient edge strength for rougher operations.

Where to get cutting data for specific machines and materials?
Metav Werkzeuge can supply recommended feeds and speeds and adapt suggestions to the machine and material; contact details are provided below.

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

The Walter AG (brand appearance: Walter Tools) is one of the world’s leading manufacturers of precision tools for metalworking and is part of the Sandvik group. Protected trademarks and trade names remain 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 item is an original, factory-new product of the manufacturer.