TPMN 220408 NS740 Wendeplatten - Tungaloy

Benefit from a cost-effective combination of high-precision cermet cutting and consistent surface quality, with ISO compatibility that simplifies toolholder selection. Order the TPMN220408 NS740 Tungaloy insert directly via Metav Werkzeuge or request technical guidance from the consultants for optimal process integration.

TPMN220408 NS740 Tungaloy – ISO triangular turning insert, 60°, cermet finishing grade

TPMN220408 NS740 Tungaloy is an ISO‑standard triangular insert designed for finishing to light machining in steel turning applications, combining a cermet cutting edge with reliable dimensional stability.

• ISO-compliant triangular insert 60°
• NS740 cermet grade for fine surface finish
• 0.8 mm corner radius for precise edge control
• Without hole; standard clamp compatibility

Delivering consistent surface quality for finishing operations

The NS740 grade is formulated as a cermet or coated cermet optimised for finishing to light machining of steel, prioritising surface finish and dimensional accuracy over aggressive material removal. The insert’s geometry — a 60° triangular form with a 0.8 mm corner radius — supports controlled cutting engagement that reduces vibration and promotes a steady cutting edge, which in turn helps achieve repeatable part tolerances and improved cosmetic results on turned components.

Process efficiency through stable wear and repeatable results

Designed for consistent flank and crater wear behaviour, the NS740 grade yields predictable edge life under finishing conditions. This predictability reduces unplanned tool changes and supports planned cycle times, delivering a higher effective throughput. The combination of cermet chemistry and the insert’s precise tolerances enables operators to maintain tight machining windows and to favour fewer rework cycles, which benefits both small‑batch and series production where surface integrity matters.

Clear mounting and ISO compatibility reduce setup risk

Compatibility with a holder is governed by form, relief angle, tolerance class, fastening, size and thickness; the ISO designation and standardised dimensions simplify matching to widely used external holders or boring bars. The insert’s specification — triangular form, 4.76 mm thickness and absence of a centre hole — clarifies clamping requirements and reduces the potential for assembly mistakes during tool changes, helping to keep setup time and scrap rates to a minimum.

Choosing NS740 cermet for steel finishing: practical guidance

For applications where surface integrity and dimensional stability are decisive, the NS740 grade is a pragmatic choice. It is particularly suited to finishing passes and light turning where consistent morphology of wear and an emphasis on homogeneity of the cutting edge are required. Where higher metal removal is needed, consider switching to a roughing grade; for fine finishing, maintain stable feed and cutting speeds to exploit the cermet’s strengths and extend edge life.

For reliable finishing performance with a reputable brand, request TPMN220408 NS740 Tungaloy inserts through Metav Werkzeuge — contact Metav Werkzeuge at info@metav-werkzeuge.com or call +49 2822 7131930 to discuss technical integration and supply options

Technical data

• Article number: 6821545
• SKU: 6821545-Tungaloy
• Manufacturer SKU: TUN6821545
• Model series: ISO-Drehwendeschneidplatten

Facts

• Size: 22 mm
• Thickness: 4.76 mm
• Geometry angle: 60°
• Relief angle: 11°
• Corner radius: 0.8 mm

Special features

• Grade: NS740 (cermet / coated cermet)
• Material: cemented carbide
• Shape: triangular
• Hole: without hole
• Chipbreaker: none
• Application: turning
• ISO series: ISO turning insert system

FAQ

Which materials is this insert intended for? The NS740 grade is aimed at finishing to light machining of steel; the TPMN220408 NS740 Tungaloy insert is optimised for achieving high surface quality and dimensional accuracy on steel components.

How is compatibility with a toolholder determined? Compatibility is determined by form, relief (frewinkel), tolerance class, fastening, size and thickness; TPMN220408 follows ISO norms so matching to standard external holders or boring bars is straightforward.

What are the key geometric specifications to consider? The insert is triangular with a 60° geometry, a 0.8 mm corner radius and a thickness of 4.76 mm, which influences allowable feeds, depths of cut and clamping method.

Is the cutting material coated? The NS740 designation describes a cermet or coated cermet grade developed for finishing performance; this supports even wear and good surface results under light cutting conditions.

What applications suit this insert best? TPMN220408 NS740 Tungaloy is best used for final passes in external and internal turning where surface finish and dimensional control are priorities.

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.