WNMG 080408 T9215 Wendeplatten - Tungaloy

Benefit from a CVD-coated carbide grade engineered for economical medium turning: the combination of a 0.8 mm corner radius, six usable cutting edges and an effective TM chipbreaker delivers stable material removal and reduced tooling costs — order via Metav Werkzeuge or request application advice from our consultants.

WNMG 080408 T9215 WNMG‑TM insert for medium machining — Tungaloy

The WNMG080408‑TM T9215 is a CVD-coated turning insert for economical medium machining of steels, with proven chip control for stainless steel and cast iron where required.

• CVD coating with Ti-comp + Al2O3 + TiN
• 0.8 mm corner radius for robust edges
• Six usable cutting edges for efficiency
• Optimised chip control for medium feeds

Higher throughput through advanced coating and thermal resistance

The combination of a CVD coating with Ti-comp + Al₂O₃ + TiN and a hard substrate provides elevated resistance to crater wear and thermal softening, enabling higher sustained cutting speeds under stable conditions. Manufacturer guidance places typical starting speeds for low‑carbon and alloy steels at 150–400 m/min, for stainless steel at 100–250 m/min and for cast iron at a very wide 140–500 m/min window; feed rates of 0.20–0.50 mm/rev and depths of cut around 1–5 mm are the recommended ranges. These values are starting points — machine rigidity, coolant strategy and workpiece hardness must be considered to convert the thermal and wear resistance into longer tool life and fewer indexings. The practical result is a measurable increase in productive cutting time per edge and lower operating cost per component.

Stable cutting and consistent surface quality from geometry and edge design

The W‑trigon form (80°) with a negative 0° rake and a 0.8 mm corner radius prioritises edge strength and process stability. Compared with finer radii, the larger corner radius reduces the risk of edge breakage in continuous and lightly interrupted cuts, though it increases radial load and requires a corresponding workpiece transition radius. The integrated TM chipbreaker is tuned for moderate feeds and depths, producing predictable chip formation and improved surface finish on ISO P (steel) work. The insert’s six usable cutting edges deliver economical indexing cycles and reduce tooling consumption, supporting steady production runs where repeatable dimensional quality is required.

Practical handling, clamping reliability and application guidance

The insert is supplied double‑sided with a central cylindrical hole, enabling secure fastening and simple indexing in compatible toolholders; the M tolerance class supports repeatable positioning. Key dimensions such as an inscribed circle (IC) of 12.70 mm, cutting edge length 8.70 mm, effective length 7.59 mm and thickness 4.76 mm combine to suit a wide range of standard turning tool assemblies. The grade’s material focus is ISO P, with extended applicability to stainless steel and cast iron when the recommended cutting data are observed. For heavily interrupted cuts or thin‑walled, vibration‑sensitive components, consider more robust grades or positive geometry alternatives; for fine finishing, a dedicated wiper or finishing geometry would be preferable. The component is Made in Japan, reflecting consistent manufacturing quality.

Contact Metav Werkzeuge for tailored cutting data and availability of the Tungaloy WNMG080408‑TM T9215 insert, or request technical consultation via info@metav-werkzeuge.com or +49 2822 7131930

Technical Data

• Manufacturer article number: 6772400
• Shop article number: TUN6772400
• SKU: 6772400-Tungaloy
• Manufacturer designation: WNMG080408‑TM T9215
• Series: T9200
• Product family: WNMG‑TM
• Country of origin: Japan
• Packaging unit: 10 pieces

Facts

• IC (inscribed circle): 12.70 mm
• Cutting edge length L: 8.70 mm
• Effective cutting length LE: 7.59 mm
• Thickness S: 4.76 mm
• Corner radius RE: 0.80 mm
• Usable cutting edges: 6
• Bore diameter D1: 5.16 mm
• Insert angle: 80°

Special features

• Form: W (trigon, 80°)
• Rake: negative 0°
• Tolerance class: M
• Execution: with cylindrical hole and double-sided chipformer
• Chipbreaker: TM / Nega‑TM
• Coating: Ti-comp + Al₂O₃ + TiN (CVD)
• Grade: T9215 (coated carbide)
• Application: medium machining; primary ISO P (steel); extended ISO M, ISO K
• Wiper geometry: no

FAQ

Which materials is this insert designed for?
The Tungaloy WNMG080408‑TM T9215 is primarily intended for ISO P (steel) and is also suitable for stainless steel and cast iron within the manufacturer’s recommended cutting data ranges.

What are the recommended cutting parameters for general turning?
Typical starting ranges are depth of cut 1–5 mm, feed 0.20–0.50 mm/rev and cutting speeds depending on material: 150–400 m/min for most steels, 100–250 m/min for stainless steel and 140–500 m/min for cast iron.

How many usable edges does the insert provide and what is the benefit?
The insert offers six usable cutting edges, lowering the cost per edge and extending the time between tool changes for continuous production runs.

What does the 0.8 mm corner radius mean for process setup?
A 0.8 mm corner radius increases edge strength and improves stability in medium cuts but raises radial forces; a corresponding workpiece profile radius and robust fixturing are recommended.

Is the insert suitable for heavily interrupted cuts or fine finishing?
It is optimised for stable, continuous to lightly interrupted medium machining. For severe interruptions, tougher grades are advised; for fine finishing, consider dedicated finishing or wiper geometries.

Manufacturer: Tungaloy Corporation