TNGA160404SM-S WCH10C Wendeplatten - Walter Tools

Take advantage of the combination of high-temperature resistance, a robust triangular geometry and a wear‑resistant coated ceramic grade for consistent performance in hard machining; order this insert via Metav Werkzeuge or consult our technical advisors for machining recommendations.

TNGA160404SM-S WCH10C indexable turning insert by Walter Tools – for hard machining of hardened steels

The TNGA160404SM-S WCH10C is a triangular 60° indexable turning insert developed for high‑temperature, high‑speed turning of hardened steels; its coated ceramic grade and negative rake geometry provide stability in demanding hard‑machining operations

• Walter CBN series – coated ceramic grade WCH10C
• For hard machining of hardened steels (ISO H)
• Triangle 60° insert with 0.4 mm corner radius
• Negative 0° rake for stable cutting

High‑speed, heat‑resistant performance for hardened components

The insert’s distinguishing characteristic is its coated ceramic grade, WCH10C, which is engineered for high cutting speeds and thermal stability during extended contact with hard materials. Coated ceramics maintain hardness at elevated temperatures, so the insert sustains cutting edge integrity where conventional carbides would soften. In practice, this means more consistent component tolerances and longer in‑process life for tools used in hard machining of quenched and tempered parts. The combination of material technology and the Walter CBN series philosophy also contributes to predictable wear behaviour and reliable repeatability on production lines.

Stable cutting and predictable surface quality through geometry

Geometry plays a decisive role in edge strength and chip flow. The triangular 60° shape with a 0.4 mm corner radius increases resistance to mechanical loading and supports controlled engagement in interrupted or heavy cuts. The negative 0° rake increases the effective cutting edge robustness, reducing the tendency for chipping under high contact stresses. The integrated chipbreaker S is designed to promote short, manageable chips during hard turning, improving process safety and helping to preserve workpiece surface finish. Together, these features yield reduced rework rates and steadier cycle times in series production.

Practical application guidance for process reliability

Designed within the Walter CBN / Hartstoff series, this insert is intended specifically for machining of materials classified under ISO group H (hardened steels) and is suitable for pre‑hardened and hardened components where wear resistance and thermal stability are critical. The insert designation indicates a compact form factor (insert size 16, thickness 04) and a general tolerance class G, which supports consistent clamping and indexing behaviour in standard toolholders. For optimised results, match holder rigidity and cutting parameters to the workpiece hardness and batch size; when in doubt, Metav Werkzeuge’s technical consultants can recommend parameter windows to balance tool life and surface finish. The construction focuses on reproducible outcomes and reduced downtime rather than experimental cutting regimes.

Contact Metav Werkzeuge for tailored application advice and to source Walter Tools inserts for hardened steel turning, or ask for a cutting‑data recommendation from our specialists

Technical data

• SKU: TNGA160404SM-S-WCH10C-WALTER
• Designation: TNGA160404SM-S WCH10C
• Manufacturer: Walter Tools
• Series: Walter CBN / Hartstoff
• Grade: WCH10C

Core specifications

• Insert size: 16
• Thickness: 04
• Corner radius: 0.4 mm
• Shape: Triangle 60°
• Rake angle: 0° (negative)
• Tolerance class: G

Features & application

• Coated ceramic cutting grade
• Chipbreaker S
• Suitable for hardened steels (ISO H)
• Intended for hard machining / hard turning
• Stable cutting edge for high thermal loads

FAQ

Is this insert suitable for hardened steels?
The TNGA160404SM-S WCH10C insert from Walter Tools is specifically designed for machining materials in ISO group H and is therefore suitable for hardened steels and hard turning applications.

How does the 0.4 mm corner radius affect performance?
A 0.4 mm corner radius increases edge strength and reduces risk of chipping under high cutting forces, improving tool life and supporting a consistent surface finish on hardened components.

What does the negative 0° rake mean for machining?
A negative 0° rake enhances cutting edge robustness and stability during heavy engagement, making the insert advantageous for interrupted cuts and demanding hard‑machining operations.

How does the chipbreaker S influence chip formation?
The chipbreaker S is tuned to promote short, controlled chips in hard turning, which supports process safety, easier chip evacuation and a more consistent workpiece surface.

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

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