TPGT16T308-MM4 WSM20S MM4 Wendeplatten - Walter Tools

Take advantage of the combination of Tiger·tec Silver wear resistance, the WSM20S grade for stainless steels and superalloys, and the stable r0.8 corner radius to ensure consistent machining quality and extended tool life; order or request advice via Metav Werkzeuge for a seamless production setup.

TPGT16T308-MM4 WSM20S turning indexable insert — Walter Tools, Tiger·tec Silver, MM4 chipbreaker

The TPGT16T308-MM4 WSM20S is an indexable turning insert designed for reliable cutting of stainless steels and heat‑resistant superalloys, combining a hard‑wear coating with a geometry optimised for stable chip control.

• Tiger·tec Silver coating for excellent wear resistance
• Suitable for stainless steel and superalloys machining
• Triangular 60° geometry for versatile turning
• 11° relief and r0.8 for stable cutting edge

Greater process reliability for demanding materials

The combination of the Tiger·tec Silver coating and the WSM20S grade provides a pronounced focus on wear resistance and edge stability, addressing the typical challenges when machining stainless steels and heat‑resistant superalloys. These materials are prone to work hardening and generate high cutting temperatures; the coated carbide formulation reduces flank wear and prolongs tool life, which translates into fewer tool changes and higher overall machine uptime. In practice, this means a more consistent production rhythm and reduced unscheduled downtime, supporting measurable efficiency improvements on the shop floor.

Improved surface quality through precision geometry

A triangular 60° form with an 11° relief angle and r0.8 corner radius delivers a balanced mix of strength and finish capability. The geometry minimises radial cutting forces while the moderate corner radius helps maintain a sharp, yet robust edge for longer, producing repeatable surface finishes on tubular and prismatic parts. The MM4 chipbreaker is tailored to break and evacuate chips reliably in interrupted cuts and varying depths of cut, which helps maintain process stability and reduces the risk of surface defects — a clear benefit where component finish is critical.

Seamless integration and handling advantages

Sized to the TPGT16 family and supplied in a T3 thickness, this indexable insert fits conventional toolholders that accept this designation, enabling quick replacement and simple inventory management. The coated carbide substrate offers a good compromise between toughness and hardness for mixed production runs, while the WSM20S sort is intentionally tuned for demanding alloys where secure chip formation and a stable cutting edge are priorities. As a result, the insert supports predictable cycle times and easier process qualification in series production setups.

For application advice or to secure availability of Walter Tools inserts with Tiger·tec Silver technology, contact Metav Werkzeuge — email info@metav-werkzeuge.com or call +49 2822 7131930 for tailored recommendations and fast delivery.

Technical data

• SKU: TPGT16T308-MM4-WSM20S-WALTER
• Designation: TPGT16T308-MM4 WSM20S
• Product type: Indexable turning insert
• Brand: Walter Tools
• Series: Tiger‑tec Silver
• Grade: WSM20S
• Tolerance class: G

Facts

• Relief angle: 11°
• Corner radius: 0.8 mm
• Inscribed circle / size: 16 mm
• Plate thickness: T3
• Plate form: triangular 60°

Special features

• Coating: Tiger·tec Silver (coated carbide)
• Chipbreaker: MM4
• Material applicability: stainless steels (ISO group M)
• Material applicability: heat‑resistant superalloys and titanium (ISO group S)
• Geometry: TPGT16 family compatible

FAQ

Is the insert suitable for machining stainless steel?
The TPGT16T308-MM4 WSM20S insert from Walter Tools is specifically geared to ISO group M materials and is suitable for machining stainless steels thanks to the Tiger·tec Silver coating and the WSM20S grade.

What does WSM20S indicate for cutting performance?
WSM20S denotes a Walter Tools coated‑carbide grade optimised for secure chip formation and edge stability when working with tough, heat‑sensitive alloys; the designation is part of the Tiger·tec Silver family.

Which chip types does the MM4 chipbreaker support?
The MM4 chipbreaker on this turning insert helps form short, controllable chips in mixed turning operations, supporting stable evacuation and consistent surface quality with the TPGT16T308-MM4 geometry.

How does the r0.8 corner radius affect durability and finish?
A corner radius of r0.8 balances a robust cutting edge with the ability to produce a fine surface finish, extending edge life while reducing the risk of chipping during interrupted cuts for the TPGT16T308-MM4 WSM20S insert.

Can this insert be used in standard TPGT16 toolholders?
Yes, the designation indicates compatibility with toolholders designed for the TPGT16 size family, allowing straightforward replacement and consistent clamping in established turning systems.

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

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