TNMG160412-FM5 WSM20S WSM20S Wendeplatten - Walter Tools

Take advantage of the proven combination of Tiger·tec Silver coating and the WSM20S grade for stable chip control and longer edge life when machining stainless steels and heat-resistant alloys; choose Metav Werkzeuge for expert advice or for procurement assistance.

TNMG160412-FM5 WSM20S turning insert — Triangle 60°, 1.2 mm corner radius, Walter Tools

The TNMG160412-FM5 WSM20S is a coated carbide turning insert designed for demanding machining of stainless steels and heat‑resistant superalloys, combining a robust negative rake and a chipbreaker tailored for secure chip formation

• Tiger·tec Silver coated carbide grade WSM20S
• Optimised for stainless steels and superalloys
• Triangle 60° shape, 1.2 mm corner radius
• Negative 0° rake for a strong cutting edge

Consistent cutting performance for difficult-to-machine materials

The WSM20S grade in the Tiger·tec Silver family is formulated to deliver stable chip formation and reliable edge life when machining materials that tend to work‑harden or generate heat, such as stainless steels and nickel‑based alloys. A coated carbide substrate provides thermal resistance and wear protection; this means fewer unplanned tool changes and more predictable cycle times. In practical terms, the chemical and mechanical design of the grade helps maintain a stable cutting edge under thermal stress, resulting in improved process stability and a more consistent surface finish for turned components.

Geometry engineered for process security and dimensional accuracy

The triangular 60° platform with a 1.2 mm corner radius offers a balance between edge strength and finish quality: the larger radius increases edge robustness for intermittent cuts, while the triangle form provides three indexed cutting edges per insert for economic tool utilisation. The negative 0° rake enhances the effective strength of the cutting edge, which is beneficial when facing heavy radial loads or interrupted cuts; operators should note that a stronger edge typically requires slightly higher cutting forces, but pays off through reduced edge chipping and longer in‑service life. This geometry supports reproducible part tolerances and reduces the need for corrective rework.

Chip control and surface quality adapted to production needs

The FM5 chipbreaker is designed to manage chips typically produced when machining M (stainless steels) and S (heat‑resistant superalloys) groups; it promotes short, controllable chips and reduces the risk of built‑up edge formation. For production environments, that translates into safer handling around the machine, reduced secondary cleaning operations and more consistent surface integrity. The combination of chip control and the coated grade reduces downtime caused by poor chip evacuation and improves overall process throughput, making this insert suitable for batch production as well as serial manufacturing.

Practical handling and integration into existing tool systems

The TNMG format follows common ISO toolholder interfaces, so the insert fits standard turning toolholders configured for triangular inserts. The designation indicates the insert geometry and chipbreaker type—useful when matching to turning parameters. Replacement is straightforward: each indexed edge is accessible by rotating the insert, offering quick turnaround during tool changes. The insert’s execution code and tolerance class ensure consistent fit and repeatable clamping, supporting predictable offsets and quick setup changes in busy shops.

For application recommendations or to discuss Walter Tools turning inserts with Tiger·tec Silver for specific stainless or superalloy tasks, please contact Metav Werkzeuge for tailored technical guidance and procurement support

Technical Data

• SKU: TNMG160412-FM5-WSM20S-WALTER
• ISO designation: TNMG160412-FM5 WSM20S
• Grade: WSM20S
• Series: Tiger·tec Silver
• Manufacturer: Walter Tools

Facts

• Size (inscribed circle): 16 mm
• Corner radius: 1.2 mm
• Thickness: 04
• Free angle (rake): 0° (negative)
• Tolerance class: M

Special features

• Chipbreaker FM5
• Coated carbide grade
• Suitable for stainless steels and superalloys (S / M)
• Triangle 60° shape
• Execution: G

FAQ

What materials is this insert suitable for? The TNMG160412‑FM5 WSM20S insert is intended for stainless steels and heat‑resistant superalloys (material groups M and S), using the Tiger·tec Silver coated carbide grade for improved chip control.

How does the FM5 chipbreaker affect machining? The FM5 chipbreaker on this Walter Tools insert produces short, controlled chips when machining tough alloys, which helps maintain surface integrity and reduces the risk of built‑up edge.

Can the insert be indexed to use multiple cutting edges? Yes, the triangular 60° geometry provides three usable cutting edges, allowing for economical indexing and reduced tooling costs per edge for the TNMG160412‑FM5 WSM20S insert.

What is the benefit of the negative 0° rake? A negative 0° rake increases cutting edge strength and resistance to chipping under heavy or interrupted cuts; this characteristic supports stable, repeatable turning operations in demanding materials.

Is the grade suitable for serial production environments? The combination of WSM20S grade and Tiger·tec Silver coating offers consistent edge life and chip control, which supports reliable serial production and reduces unexpected tool changes.

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

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