CNGA120408SM-MWS WCH10C Wendeplatten - Walter Tools

Achieve consistent, wear-resistant performance through the combination of the WCH10C coated ceramic grade and a precise rhombic 80° geometry; paired with the MWS chipbreaker this insert delivers stable chip control and reliable hard-turning productivity. Order the CNGA120408SM-MWS WCH10C directly via Metav Werkzeuge or consult our application specialists for tailored recommendations.

CNGA120408SM-MWS WCH10C — Indexable turning insert for hardened steels (Walter Tools)

The CNGA120408SM-MWS WCH10C is an indexable turning insert engineered for hard machining of hardened steels, offering a coated ceramic grade and a geometry optimised for stable, high-speed cutting.

*Coated ceramic grade WCH10C
*For hardened steels (ISO group H)
*Rhombic 80° shape, 0.8 mm corner radius
*MWS chipbreaker, negative 0° rake

Consistent wear resistance for demanding hard turning

The combination of the WCH10C ceramic grade and a coating optimised for thermal stability provides high wear resistance under severe cutting conditions. Designed specifically for machining hardened steels, the grade sustains cutting integrity at elevated temperatures and across long tool paths, which reduces unscheduled tool changes and supports continuous production. The result is greater process predictability and less rework, especially when high surface quality and dimensional stability are required.

Geometry that supports stable cuts and accurate profiles

A rhombic 80° form with a 0.8 mm corner radius and negative 0° rake promotes secure edge engagement and predictable cutting forces. This geometry helps maintain part tolerances during hard turning operations by balancing edge strength and cutting action; the modest corner radius adds robustness while still allowing good surface finish. For applications where repeatability is crucial, the insert’s dimensional design contributes to consistent results and simplified setup routines.

Improved chip control increases process security

The integrated MWS chipbreaker is tuned for fragmentation and evacuation when machining high-hardness materials. By encouraging short, controllable chips, the tool reduces the risk of workpiece scratching and tool nose damage, supporting safer automated turning cycles. As part of the Walter CBN / hard-material series, this insert is aligned with the brand’s focus on process stability and reliable surface quality, enabling more predictable cycle times and less intervention during continuous runs.

Application focus and productivity advantages

Suitable for the ISO H group and indicated for pre-hardened and hardened steel applications, the insert is a practical choice where durability and thermal resistance matter. Using a coated ceramic insert such as this often allows increased cutting speeds compared with conventional carbide grades, shortening machining times and improving throughput. When combined with consistent tool handling and correct cutting data, users can expect longer tool life and a favourable cost-in-use profile in hard turning scenarios.

For application-specific advice on Walter Tools inserts and to evaluate the CNGA120408SM-MWS WCH10C for a particular hardened-steel task, contact Metav Werkzeuge for direct consultation at info@metav-werkzeuge.com or call +49 2822 7131930

Technical Data

• Article number: CNGA120408SM-MWS-WCH10C-WALTER
• Label: Drehwendeschneidplatte CNGA120408SM-MWS WCH10C Walter Tools
• Manufacturer: Walter Tools
• Product type: Indexable turning insert
• Series: Walter CBN / hard-material
• Grade: WCH10C
• ISO designation: CNGA120408SM-MWS WCH10C

Facts

• Free rake angle: 0° (negative)
• Corner radius: 0.8 mm
• Plate shape: Rhombus 80°
• Plate size: 12
• Chipbreaker: MWS
• Plate thickness: 04
• Tolerance class: G
• Execution: A

Special features

• Coating: Coated ceramic grade WCH10C
• Material suitability: Hardened steel (ISO group H)
• Series purpose: Hard machining applications
• Chip control: MWS chipbreaker for short chips
• Benefit focus: High cutting speed capability and thermal stability

FAQ

What materials is this insert designed for?
The CNGA120408SM-MWS WCH10C is designed primarily for hardened steels (ISO group H) and for hard-turning applications where a wear-resistant ceramic grade is required.

How does the MWS chipbreaker affect machining?
The MWS chipbreaker on the CNGA120408SM-MWS WCH10C promotes short, controlled chips, improving process security and reducing the likelihood of surface damage during high-hardness turning.

What advantages does the rhombic 80° geometry provide?
The rhombic 80° form with a 0.8 mm corner radius gives a balance of edge strength and cutting performance, allowing secure engagement and consistent dimensional accuracy in hard-turning tasks using this Walter Tools insert.

Can this insert be used for pre-hardened steel?
Yes, the CNGA120408SM-MWS WCH10C is suitable for pre-hardened steel as well as fully hardened materials, offering thermal stability and wear resistance needed for these applications.

How does the WCH10C grade compare for high-speed operations?
The coated ceramic WCH10C is engineered for high cutting speeds and temperature resistance, enabling faster cycle times in many hard-machining scenarios compared with conventional carbide grades.

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

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