CNMG120404-MM5 WMP20G WMP20G Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Gold wear resistance and the MM5 chipbreaker to improve stability and surface finish when machining stainless steels, while the CNMG 80° geometry and 0.4 mm corner radius deliver robust edge life for reliable production; order directly via Metav Werkzeuge or consult their specialists for cutting-parameter recommendations.

CNMG120404-MM5 WMP20G — Turning insert (CNMG, Tiger·tec Gold) by Walter Tools for stainless steel

The CNMG120404-MM5 WMP20G is a rhombic 80° indexable turning insert designed for productive machining of stainless steels under medium to robust conditions

• Tiger·tec Gold coating for improved wear resistance
• Optimised chip control with MM5 breaker geometry
• Rhombic 80° CNMG insert, negative 0° rake
• Corner radius 0.4 mm for robust edge strength

Greater process reliability when machining stainless steels

The Tiger·tec Gold coating combined with the WMP20G carbide grade provides enhanced resistance to abrasive and adhesive wear, which is particularly important when working with stainless steel grades that tend to generate heat and sticky chips. By stabilising the cutting edge and reducing flank wear, the insert supports longer tool life and fewer interruptions for index changes. This leads to measurable productivity gains and more consistent part quality in serial production.

Better surface finish and reduced built-up edge risk

The MM5 chipbreaker is optimised for reliable chip formation in tough-to-machine materials. Its geometry promotes short, controlled chips and prevents entanglement, helping to avoid built-up edge on the cutting zone. Combined with the 0.4 mm corner radius and a 0° negative rake, the insert balances edge strength and cutting force to reduce vibrations and enhance surface integrity, decreasing the need for rework and finishing passes.

Robust geometry for versatile turning applications

The CNMG 80° format offers a stable seating in standard toolholders and good access for external and light internal turning operations. The insert thickness (code 04) and the rhombic geometry support secure clamping and consistent repeatability. For workshops seeking predictable results on stainless steel, this insert delivers a dependable compromise between economy and performance, helping to maintain cycle times even under tougher machining conditions.

Practical use and setup guidance for operators

When using this insert, select cutting speeds and feeds appropriate for the specific stainless grade; the coated grade performs best when thermal conditions are controlled and coolant strategies are applied consistently. The CNMG120404-MM5 WMP20G insert fits common CNMG toolholders and is suited to medium to heavy engagement where chip control and edge life are priorities. For parameter optimisation and selection of matching toolholders, consult the technical team at Metav Werkzeuge.

Contact Metav Werkzeuge for tailored advice on integrating the Walter Tools Tiger·tec Gold CNMG insert into production and for information on availability and cutting-parameter support — eMail: info@metav-werkzeuge.com, Tel: +49 2822 7131930

Technical Data

• Article number: CNMG120404-MM5-WMP20G-WALTER
• Designation: CNMG120404-MM5 WMP20G
• Manufacturer: Walter Tools
• Series: Tiger·tec Gold
• Grade: WMP20G
• Product type: Turning insert (indexable)

Facts

• Plate size: 12 mm
• Corner radius: 0.4 mm
• Thickness code: 04
• Geometry angle: 80°
• Rake angle: 0° (negative)

Special features

• Chipbreaker: MM5
• Coating / carbide class: Tiger·tec Gold / coated carbide
• Execution: G
• Tolerance class: M
• Applicable material group: stainless steel

FAQ

Is the CNMG120404-MM5 WMP20G suitable for all stainless-steel grades?
The CNMG120404-MM5 WMP20G is designed for a broad range of stainless steel alloys and performs well under medium to robust machining conditions, though optimal cutting data should be adjusted to the specific alloy composition.

How does the MM5 chipbreaker affect chip control?
The MM5 breaker promotes short, controlled chips and consistent evacuation, which reduces the risk of chip entanglement and supports stable cutting when machining stainless steels with the Walter Tools CNMG insert.

Can the insert be used in standard CNMG toolholders?
Yes, the CNMG 80° format is compatible with standard CNMG toolholders; correct clamping and seat cleanliness are important to ensure repeatable performance.

What are the primary benefits of the Tiger·tec Gold coating on this insert?
The Tiger·tec Gold coating improves wear resistance and edge stability under the higher heat and adhesive tendencies of stainless steel, resulting in longer tool life and a more consistent surface finish.

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

The Walter AG (brand: Walter Tools), headquartered in Tübingen, is among the world's leading manufacturers of precision tools for metalworking and is part of the Swedish Sandvik Group. Trademark and trade names are the property of their respective owners. The item offered is an original, brand-new product from the manufacturer.