CNMG120408-FW5 WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the WSM20S Tiger‑tec Silver grade together with the FW5 chipbreaker for stable chip formation and extended edge life when machining stainless steel and high‑temperature alloys; the rhombic 80° geometry and 0.8 mm corner radius ensure secure seating and consistent surface quality. Order directly via Metav Werkzeuge or consult our specialists for application recommendations.

CNMG120408-FW5 WSM20S indexable turning insert — Tiger‑tec Silver grade, Walter Tools

CNMG120408-FW5 WSM20S is a rhombic 80° indexable turning insert designed for demanding machining of stainless steel and heat‑resistant superalloys, featuring a FW5 chipbreaker and a 0° negative relief for robust cutting performance

• Tiger‑tec Silver coating heat resistance
• Optimised for stainless steel and superalloys
• Rhombic 80° shape for secure clamping
• 0° negative rake, 0.8 mm corner radius

High‑temperature performance for difficult materials

The CNMG120408‑FW5 WSM20S insert combines a Tiger‑tec Silver coated carbide grade with a cutting geometry tuned to cope with the thermal and mechanical loads of stainless steel and superalloys. The WSM20S grade is a coated hardmetal designed to maintain a stable cutting edge under elevated temperatures and poor heat conduction. For industrial turning operations this means fewer edge‑related interruptions, more predictable tool life and a better return on machining time when processing tough alloys.

Geometry and chip control that stabilise production

The Rhombic 80° outline paired with the FW5 chipbreaker gives controlled chip formation and reliable chip evacuation, reducing rework and machine downtime. The negative 0° relief contributes to a stronger cutting edge under interrupted cuts, while the 0.8 mm corner radius supports consistent surface finish and avoids premature notch wear. These design elements translate into measurable process stability and repeatable component quality in serial production.

Clarity on application and machining behaviour

ISO material grouping indicates suitability for M (stainless steel) and S (heat‑resistant superalloys and titanium) applications; the coated grade supports secure chip formation and edge retention in these groups. The insert’s behaviour favours medium to heavy feed ranges where heat resistance and edge robustness are required. For newcomers: coated carbide means a thin hard layer bonded to a tungsten‑carbide substrate to combine hardness at the shear zone with substrate toughness, improving wear resistance and reducing flank wear.

Practical benefits and production recommendations

Using a Tiger‑tec Silver grade insert with the FW5 chipbreaker reduces the frequency of tool changes and helps maintain surface integrity on workpieces, which improves throughput and lowers scrap rates. When integrating this insert into turning processes, consider suitable cutting data for stainless steel and adjust coolant and feed to maintain chip breakage; consistent fixture clamping and correct seat torque also contribute to the insert’s performance. For further machining parameters or material‑specific guidance, Metav Werkzeuge provides application support by e‑mail and phone.

Contact Metav Werkzeuge for tailored cutting data and application advice — Metav Werkzeuge GmbH can advise on optimal feeds, speeds and clamping for Walter Tools inserts and related tooling solutions

Technical data

• Article number: CNMG120408-FW5-WSM20S-WALTER
• Designation: CNMG120408-FW5
• Grade: WSM20S
• Series: Tiger‑tec Silver
• Product type: indexable turning insert
• Brand: Walter Tools

Core specifications

• Size: 12
• Thickness: 04
• Corner radius: 0.8
• Relief angle: 0° (negative)
• Chipbreaker: FW5
• Plate form: Rhombus 80°

Materials & features

• Suitable for: stainless steel (M)
• Suitable for: Superalloys and titanium (S)
• Coated hardmetal grade: coated carbide (Tiger‑tec Silver)
• Stable chip control: FW5 chipbreaker
• Geometry benefit: Rhombic 80° for secure seating

FAQ

What materials is this insert best suited for?
The CNMG120408‑FW5 WSM20S insert is optimised for stainless steel and for heat‑resistant superalloys/titanium (ISO groups M and S), where the Tiger‑tec Silver grade supports stable cutting and heat resistance.

How does the FW5 chipbreaker affect machining?
The FW5 chipbreaker delivers controlled chip formation and evacuation; when combined with the rhombic 80° shape it improves process stability and surface quality for turning operations.

Is the 0° relief suitable for interrupted cuts?
Yes, the negative 0° relief strengthens the cutting edge and provides increased robustness for interrupted or heavy engagement cuts, reducing the risk of edge chipping.

What does the WSM20S designation signify?
WSM20S denotes the Walter coated hardmetal grade within the Tiger‑tec Silver family, tailored for high thermal loads and reliable edge retention during machining of stainless steel and similar materials.

Where can one obtain cutting data for specific stainless steel grades?
Metav Werkzeuge can supply recommended cutting parameters for different stainless steel grades and workpiece conditions; reference the CNMG120408‑FW5 WSM20S insert and operating conditions for precise guidance.

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

Protected trademarks and product names remain the property of their respective owners. Brand names are mentioned for explanation only and do not imply any affiliation between our company and Walter Tools. The offered article is an original, factory‑new product of the manufacturer.