CNMM120412-HU5 WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver coating, a robust HU5 chipbreaker and precise rhombus 80° geometry for stable, repeatable turning of stainless steel and heat‑resistant superalloys; order directly via Metav Werkzeuge or ask our consultants if needed.

CNMM120412-HU5 WSM20S turning insert — Tiger·tec Silver, for stainless steel and superalloys — Walter Tools

The CNMM120412-HU5 WSM20S is a rhombic 80° turning insert with a negative 0° rake designed for demanding internal and external turning in stainless steel and heat‑resistant superalloys, offering controlled chip formation and extended tool life.

• Tiger·tec Silver coated carbide grade WSM20S
• Optimised HU5 chipbreaker for stable chips
• 0° negative rake, 1.2 mm corner radius

High performance for difficult-to-machine alloys and stainless steel

The coated WSM20S grade, based on the Tiger·tec Silver platform, is engineered for the thermal and mechanical stresses encountered when machining stainless steel and superalloys. The combination of a wear‑resistant carbide substrate and a specialised multi‑layer coating improves thermal stability and reduces flank wear. This results in a more predictable tool life and fewer interruptions to production, which supports efficient cycle planning in batch and continuous operations.

Stable chip control and enhanced surface integrity

The HU5 chipbreaker and rhombus 80° geometry provide consistent chip segmentation even under adverse cutting conditions. The 0° negative rake and 1.2 mm corner radius contribute to a robust cutting edge that resists built‑up edge and edge chipping, helping to maintain dimensional accuracy and surface finish. For machining where tool reliability is critical, these design choices lower the risk of rework and reduce scrap rates.

Process security and economic benefits in series production

Adopting this insert supports improved process security through reproducible wear behaviour and stable cutting forces. The Tiger·tec Silver coating enhances heat resistance, enabling higher cutting speeds in many applications and longer intervals between tool changes. Over time, this can translate into lower unit costs and more consistent throughput, which is particularly relevant for production environments focusing on productivity and repeatability.

Practical integration and recommended applications

The insert conforms to the CNMM120412 designation and fits standard toolholders designed for this insert form. It is best applied where stainless steel and high‑temperature alloys demand strong edge stability and reliable chip evacuation. The robust tolerance class M and the WSM20S grade make it suitable for both roughing operations that require edge strength and semi‑finish passes where surface quality matters.

For secure machining of stainless steel and superalloys, specify the Walter Tools CNMM120412-HU5 WSM20S with Tiger·tec Silver coating and contact Metav Werkzeuge for application advice and availability via info@metav-werkzeuge.com or +49 2822 7131930.

Technical data

• Article number: CNMM120412-HU5-WSM20S-WALTER
• Label: Drehwendeschneidplatte CNMM120412-HU5 WSM20S Walter Tools
• Brand: Walter Tools

Facts

• Insert designation: CNMM120412-HU5 WSM20S
• Size: 12
• Corner radius: 1.2
• Thickness: 04
• Rake angle: 0° (negative)

Special features

• Coating: Tiger·tec Silver
• Grade: WSM20S
• Chipbreaker: HU5
• Geometry: Rhombus 80°
• Material suitability: S / M (stainless steel, superalloys)
• Tolerance class: M
• Series: Tiger‑tec Silver
• Execution: M
• Type: turning insert

FAQ

What materials is this insert suited for?
The CNMM120412‑HU5 WSM20S is specified for stainless steel and heat‑resistant superalloys (material groups S and M), offering reliable chip control and edge stability in these challenging materials.

Which chipbreaker does the insert use and what benefit does it bring?
The insert uses the HU5 chipbreaker; it provides controlled chip segmentation and improved evacuation, reducing the likelihood of tangling and enhancing surface quality during turning.

How does the Tiger·tec Silver coating affect tool life?
The Tiger·tec Silver coating increases thermal resistance and wear protection on the WSM20S grade, which typically results in longer, more consistent tool life and fewer unscheduled tool changes.

Is this insert compatible with standard CNMM toolholders?
Yes, the insert follows the CNMM120412 designation and is compatible with standard toolholders designed for that insert form factor.

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