CNMG120404-MS3 WMP20S WMP20S Wendeplatten - Walter Tools

The combination of a Tiger·tec Silver coated grade and an MS3 chipbreaker provides stable chip control and extended edge life for stainless steel turning; this results in reliable, productive machining with predictable regrinds. Order directly via Metav Werkzeuge or request expert advice if required.

CNMG120404-MS3 WMP20S – Indexable turning insert, Tiger·tec Silver coating, for stainless steel (Walter Tools)

The CNMG120404-MS3 WMP20S is an indexable turning insert engineered for dependable machining of stainless steel under medium to robust cutting conditions, combining a wear-resistant coated grade with a controlled chipformer.

Tiger·tec Silver coated carbide grade WMP20S
Optimised MS3 chipbreaker for stable chips
Rhombic 80° form with 0.4 mm corner radius
Negative 0° relief for robust cutting

Consistent chip control for stainless steel machining

The combination of the WMP20S grade and the Tiger·tec Silver coating focuses on maintaining a stable cutting edge when machining rostfreier Stahl. Coated carbide improves surface hardness and heat resistance, which reduces edge breakdown and supports continuous production runs. The integrated MS3 chipbreaker is designed to produce short, controlled chips during turning, lowering the risk of built-up edge and improving process reliability. For operations where material ductility and heat generation challenge tool life, this insert provides a technical solution that translates directly into fewer interruptions and steadier throughput.

Geometry that balances strength and precision

The rhombic 80° insert form and 0.4 mm corner radius deliver a balance between a robust cutting edge and acceptable surface finish. The rhombic geometry enables flexible tool approach angles while the modest corner radius supports dimensional stability on interrupted cuts and roughing passes. The negative 0° relief offers a stronger cutting wedge for heavier or less predictable conditions, making the insert suitable where durability is prioritised. These geometric choices reduce vibration and help maintain consistent component tolerances in serial turning.

Durable coating and grade for longer edge life

The insert’s coated grade, part of the Tiger·tec Silver series, brings layered protection that resists abrasive and adhesive wear typical of stainless-steel turning. The coating system supports thermal stability at the cutting edge and helps prevent rapid flank wear when temperatures rise. Together with a modern carbide substrate, this technology extends the useful life of the insert and increases the interval between indexings or regrinds. The net effect is improved process economy: more components per index and fewer tool changes over a production shift.

Practical handling and application notes for the workshop

The ISO designation CNMG120404 indicates an industry-standard insert form that fits commercially available CNMG toolholders; this simplifies stocking and toolholder management. The insert is intended primarily for turning applications on rostfreier Stahl in medium to robust cutting regimes and pairs well with stable setups that exploit its MS3 chip control. When selecting cutting parameters, prioritise steady feed and controlled depth of cut to make the most of the insert’s wear resistance and chipforming characteristics. For revised cutting strategies or unusual alloys, consult process data to adapt speeds and feeds to the specific stainless-steel grade being machined.

For precise stainless-steel turning with Walter Tools’ Tiger·tec Silver inserts, contact Metav Werkzeuge for availability and tailored machining advice via info@metav-werkzeuge.com or by phone at +49 2822 7131930

Technical Data

• Article number: CNMG120404-MS3-WMP20S-WALTER
• Designation: CNMG120404-MS3 WMP20S
• Product type: Indexable turning insert
• Manufacturer: Walter Tools
• Grade/Sort: WMP20S

Facts

• Size: 12
• Thickness: 04
• Corner radius: 0.4 mm
• Relief angle: 0° (negative)
• Plate form: Rhombus 80°
• Chipbreaker: MS3
• Tolerance class: M

Special features

• Series: Tiger·tec Silver
• Coated carbide grade
• Optimised for rostfreier Stahl (stainless steel)
• Stable chip formation and wear resistance
• Suitable for medium to robust cutting conditions

FAQ

What materials is this insert designed for?
The CNMG120404-MS3 WMP20S insert is designed primarily for machining rostfreier Stahl (stainless steel) and is optimised for medium to robust cutting conditions.

How does the MS3 chipbreaker benefit production?
The MS3 chipbreaker on the WMP20S grade promotes controlled, short chips that reduce the risk of built-up edge and help maintain uninterrupted machining cycles.

What does the Tiger·tec Silver series provide?
The Tiger·tec Silver coating increases thermal and abrasive resistance of the coated carbide, supporting longer edge life and consistent performance during stainless-steel turning.

Is the CNMG120404-MS3 compatible with standard toolholders?
Yes, the CNMG form is an industry ISO standard and the CNMG120404-MS3 insert fits typical CNMG toolholders used for turning operations.

What advantage does the negative 0° relief offer?
The negative 0° relief strengthens the cutting edge and improves robustness under heavier cuts or unstable cutting conditions, prioritising durability over extreme shear cutting.

Manufacturer: Walter Deutschland GmbH; Derendinger Straße 53; 72072 Tübingen

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