SNMG120412-MM5 WMP20S Wendeplatten - Walter Tools

Take advantage of stable chip control, the Tiger‑tec Silver coating and the compact square geometry for reliable stainless steel turning; order through Metav Werkzeuge or request expert advice for process optimisation.

SNMG120412-MM5 WMP20S turning indexable insert — 0° negative rake, 1.2 mm corner radius | Walter Tools

SNMG120412-MM5 WMP20S is a square turning insert designed for robust machining of stainless steel in medium to heavy conditions.

Tiger‑tec Silver coated carbide grade WMP20S
0° negative rake for robust cutting
1.2 mm corner radius for durability
Square 90° insert, 12 mm size

Consistent performance for stainless steel turning

The insert is built on the Tiger‑tec Silver platform and uses the WMP20S coating grade, which is optimised for machining stainless steel. This combination promotes stable chip formation and reduces the tendency for built‑up edge when cutting tough, heat‑generating alloys. By favouring a geometry with a 0° negative rake, the insert delivers conservative cutting forces that help maintain tool life under intermittent or interrupted cuts, supporting predictable cycle times and fewer tool changes.

Geometry and coating that improve process reliability

A square 90° format and a pronounced 1.2 mm corner radius provide a robust cutting edge that resists chipping during demanding operations. The MM5 chipbreaker is matched to the grade and geometry to channel chips away from the cutting zone, lowering the risk of recutting and surface defects. The coated carbide substrate gives thermal and mechanical stability; as a result, the tool maintains edge integrity over longer series runs and contributes to higher overall equipment effectiveness in the turning cell.

Practical benefits for production and tool management

With a compact 12 mm size and standard SNMG form factor, the insert integrates easily into common turning tool holders and indexable systems. The SNMG120412‑MM5 WMP20S offers a balance between edge strength and dimension control, which is advantageous for shops aiming to reduce downtime and improve first‑pass quality. Using this insert supports reproducible results across batches, making it suitable for job shops and production environments that require dependable performance on a range of stainless grades.

For application advice, stock enquiries or to discuss process parameters for the Walter Tools SNMG120412‑MM5 WMP20S, contact Metav Werkzeuge at info@metav-werkzeuge.com or +49 2822 7131930 for fast, expert support.

Technical data

• SKU: SNMG120412-MM5-WMP20S-WALTER
• Article designation: SNMG120412-MM5 WMP20S
• Product type: Turning indexable insert
• Series: Tiger‑tec Silver
• Grade: WMP20S
• Manufacturer: Walter Tools

Numbers / Core technical data

• Corner radius: 1.2 mm
• Insert size: 12 mm
• Thickness: 04
• Rake angle: 0° (negative)
• Shape: Square 90°
• Chipbreaker: MM5

Designs / Special features

• Coating technology: Tiger‑tec Silver
• Substrate: coated carbide (WMP20S)
• ISO workpiece group: M (stainless steel)
• Tolerance class: M
• Edge type / execution: G
• Suitable for medium to robust cutting conditions

FAQ

What materials is this insert best suited for?
The SNMG120412‑MM5 WMP20S is optimised for stainless steel machining (ISO group M), with the Tiger‑tec Silver grade designed to manage toughness and heat.

How does the 0° negative rake affect cutting?
A 0° negative rake increases edge strength and reduces the risk of chipping under heavy or interrupted cuts, which the SNMG120412‑MM5 WMP20S leverages for consistent performance.

Can this insert be used in standard SNMG tool holders?
Yes, the SNMG form factor and 12 mm size are compatible with common turning tool holders designed for SNMG inserts.

What performance advantage does the Tiger‑tec Silver coating provide?
The Tiger‑tec Silver coating enhances thermal stability and wear resistance, improving edge life and supporting reliable chip control in demanding stainless steel applications.

Is the MM5 chipbreaker suitable for finishing or roughing?
The MM5 chipbreaker on this insert balances chip control and edge robustness, making it suitable for moderate roughing and productive finishing passes in stainless steels.

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

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