SNGA120408SM-S WCH10C Wendeplatten - Walter Tools

High-performance WCH10C coated ceramic grade and a 0.8 mm corner radius ensure long tool life and consistent surface quality when machining hardened steels; combined with a negative 0° rake for secure engagement, this insert supports reliable hard-turning operations. Order the SNGA120408SM-S WCH10C directly via Metav Werkzeuge or consult the team for application recommendations.

SNGA120408SM-S WCH10C – indexable turning insert, coated ceramic for hardened steels (Walter Tools)

A SNGA120408SM-S WCH10C indexable turning insert engineered for high-speed hard turning and stable chip control in the machining of hardened steels

• Coated ceramic grade WCH10C
• Square 90° shape for stable cutting
• 0.8 mm corner radius for edge strength
• Negative 0° rake for secure engagement

High-speed hard turning with sustained tool life

The WCH10C cutting grade is a coated ceramic developed for high cutting speeds and elevated temperature stability, which directly reduces flank wear and extends uptime. In practical terms, this means fewer insert changes and more consistent component finish during continuous production. The SNGA120408SM-S WCH10C format delivers a balance between toughness and thermal resistance, making it suitable for demanding hard-turning tasks where hardened steels require a wear-resistant geometry. The result is lower cycle-time variability and improved process repeatability.

Stable geometry for precision and repeatable results

A square 90° plate form combined with a 0.8 mm corner radius and a negative 0° free angle produces a rigid cutting edge that resists chipping under heavy radial loads. This geometry enhances process security by maintaining a stable cutting line and predictable force vectors, which translates into improved dimensional accuracy and surface integrity on workpieces. Negative rake inserts like this one engage securely at the start of cut, reducing the risk of edge breakouts in interrupted cuts and hard materials.

Efficient chip control and reduced rework

The built-in chipbreaker S is tailored for hard materials to produce compact, manageable chips even at elevated speeds. Controlled chip formation minimises manual intervention and secondary cleaning operations at the machine, contributing to a lower overall cost per part. The ceramic cutting core also tolerates higher temperatures, enabling faster metal removal rates on pre-hardened and hardened steels without sacrificing tool life or component quality.

Practical value in production environments

Designed for series production and finishing of hardened components, this indexable turning insert excels where repeatable quality and low tool-change frequency matter. The WCH10C grade and robust plate geometry reduce downtime and support stable cycle times, benefiting shops that require consistent output from turnoversheet to turnover. The brand heritage of Walter Tools adds confidence in performance and supply chain reliability, reinforcing predictable delivery and reproducible machining results.

For application guidance, grade selection or to request delivery from Metav Werkzeuge, contact the Metav Werkzeuge team for tailored advice and sample availability.

Technical data

• Article number: SNGA120408SM-S-WCH10C-WALTER
• Product type: Drehwendeschneidplatte (indexable turning insert)
• ISO designation: SNGA120408SM-S WCH10C

Facts

• Plate size: 12
• Plate thickness: 04
• Corner radius: 0,8
• Free angle: 0° (negativ)
• Tolerance class: G

Special features

• Series: Walter CBN / Hartstoff
• Grade: WCH10C (coated cutting ceramic)
• Plate form: Quadrat 90°
• Chipbreaker: S
• Material application: hardened steels (H)
• Suitable for: pre-hardened steel machining

FAQ

What materials is this insert designed for?
The SNGA120408SM-S WCH10C is designed primarily for the machining of hardened steels, with the WCH10C ceramic grade optimised for high-temperature stability and wear resistance.

How does the 0.8 mm corner radius influence performance?
A 0.8 mm corner radius increases edge strength and helps absorb impact loads, improving resistance to chipping during hard-turning operations with the SNGA120408SM-S WCH10C.

Is the negative 0° free angle suitable for finishing passes?
Yes, the negative 0° free angle provides secure engagement and a stable cutting edge, which supports consistent surface finish during finishing and semi-finishing passes.

What role does the chipbreaker S play in production?
The chipbreaker S promotes compact chip formation when machining hard materials, aiding automatic chip evacuation and reducing manual intervention at the machine.

Can this insert be used on pre-hardened steel?
The SNGA120408SM-S WCH10C is suitable for pre-hardened steels and hard-turning applications, offering wear resistance that prolongs insert life in such conditions.

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

Trademarks and trade names are the property of their respective owners. Brand names and protected trademarks are mentioned for explanation only. There is no connection between our company and the mentioned brands. The item offered is original and brand-new from the manufacturer.