TNMG 160408 GT720 Wendeplatten - Tungaloy

Combine the GT720 cermet cutting grade with ISO TNMG geometry and a 0.8 mm corner radius to achieve consistent surface finish and tight dimensional control in finishing and light turning operations. Order via Metav Werkzeuge or contact our consultants for material- and process-specific recommendations.

TNMG160408 GT720 indexable turning insert — Tungaloy, triangular 60° geometry

A TNMG160408 GT720 indexable insert designed for finishing to light turning of steel, offering optimised surface quality and repeatable dimensional accuracy.

• ISO TNMG format, triangle 60° geometry
• GT720 cermet for finishing steel
• 0.8 mm corner radius for fine edges
• Cylindrical hole, double-sided chipbreaker

Reliable surface quality for finishing operations

The insert delivers a stable, high-quality cut intended for finishing to light machining of steel. The GT720 cutting grade, a coated cermet, is formulated to promote uniform wear and excellent surface finish, especially where dimensional tolerances are critical. In practical terms, this means fewer secondary operations and reduced rework, supporting improved throughput without sacrificing part quality.

Material and cutting behaviour explained

Made for finishing, the substrate and coating combination enhances edge integrity under moderate cutting conditions. The cermet composition provides a balance between hardness and toughness that reduces built-up edge and improves consistency across batches. When paired with the correct feed and speed settings, the indexable insert yields repeatable results and longer in-process life than many uncoated alternatives, helping to lower overall machining costs.

System compatibility and secure mounting

The insert follows ISO specifications for TNMG geometry, so compatibility with holders is determined by shape, clearance angle, tolerance class, attachment method, size and thickness. The triangular plate with a cylindrical hole and a 60° lead angle ensures positive seating and straightforward indexing. The 0° clearance (rake) and the double-sided chipbreaker allow two usable cutting edges per side, improving economy and simplifying inventory management.

Practical handling and application tips

For best results during turning, select an appropriate holder and clamping set to match the ISO form and tolerance. The 0.8 mm corner radius is well suited to produce fine profile definitions; avoid overly aggressive feeds that can overload the edge. Where surface integrity and dimensional control are priorities, the combination of GT720 and precise machine setup will reduce scrap rates and elevate first-pass yield.

Contact Metav Werkzeuge today for tailored application advice or to request machining recommendations for your components — info@metav-werkzeuge.com | +49 2822 7131930

Technical data

• Article number: 6849174
• SKU: 6849174-Tungaloy
• Manufacturer SKU: TUN6849174
• Model series: ISO-Drehwendeschneidplatten

Dimensions / core data

• ISO code: 160408
• Insert designation: TNMG160408
• Diameter/size: 16 mm
• Corner radius: 0.8 mm
• Plate thickness: 4.76 mm
• Lead/angle: 60°
• Clearance (rake) angle: 0°

Design & features

• Material: cemented carbide
• Cutting grade: GT720 (cermet, coated cermet)
• Plate form: triangular
• Hole: with cylindrical hole
• Chipbreaker: double-sided
• Typical application: turning (finishing to light machining of steel)

FAQ

What materials is this insert best suited for? The TNMG160408 GT720 insert is optimised for finishing to light machining of steel, with the GT720 cermet grade prioritising surface quality and even wear.

How does the GT720 grade affect tool life and finish? GT720 provides a combination of hardness and edge strength that promotes consistent wear and excellent surface finish in finishing cuts, improving repeatability and reducing rework.

Is the insert compatible with standard TNMG holders? Yes. The insert adheres to ISO TNMG form and is compatible with holders that match the insert's form, size, thickness and clamping arrangement.

What cutting parameters are recommended for finishing applications? Use moderate cutting speeds and fine feeds appropriate for finishing; the 0.8 mm corner radius and cermet grade favour lower feeds for best surface integrity and dimensional control.

Manufacturer/Responsible: Tungaloy-NTK Germany GmbH, Katzbergstraße 3a, 40764 Langenfeld - Protected trademarks and product names are the property of their respective owners. Brand names and protected trademarks are mentioned solely for explanatory purposes. There is no affiliation between our company and the mentioned brands. The item offered is an original, brand-new product from the manufacturer.