CNMG 120404 T515 Wendeplatten - Tungaloy

Combining the CVD-coated carbide grade T515, ISO CNMG geometry and a double-sided chipbreaker results in an economical, reliable solution for cast-iron turning; order the insert directly via Metav Werkzeuge or request application advice from our consultants.

CNMG120404 T515 turning insert by Tungaloy — ISO CNMG for turning

The CNMG120404 T515 is an ISO-standard rhombic turning insert, designed for productive machining of cast iron with a cylindrical hole and a robust chip control geometry.

• CNMG 120404 ISO turning geometry
• CVD-coated carbide, grade T515 for cast iron
• Double-sided chipbreaker, rhombic 80° form
• 0.4 mm corner radius; cylindrical hole; 4.76 mm thick

Productive cast-iron turning with controlled chip formation

The CVD-coated carbide grade T515 is tuned for cost-effective machining of cast iron, delivering a balance of wear resistance and economic tool life. The CVD coating reduces flank wear and maintains edge integrity, which permits higher cutting speeds compared with uncoated grades while preserving component surface quality. With the rhombic ISO geometry and an 80° included angle, this insert offers versatile engagement for both external and internal turning operations, enabling consistent chip flow and reduced rework in batch production and job-shop environments. The die-hard nature of the substrate plus the coating together support steady productivity and predictable tool-change intervals.

Clear compatibility and simple clamping for reduced set-up time

ISO CNMG inserts rely on precise interaction with the holder; compatibility is determined by form, relief angle, tolerance class, clamping method, size and thickness. The CNMG120404 design includes a cylindrical locating hole and standard dimensions (size 12, thickness 4.76 mm), enabling straightforward insertion into many CNMG-compatible toolholders. The double-sided format halves index times and extends usable life per insert, while the 0° relief angle specification ensures the insert seats correctly in standard external holders. For less experienced planners, this predictable interface reduces set-up errors and shortens machine downtime during insert changes.

Operational stability, surface finish and application guidance

A 0.4 mm corner radius offers a pragmatic compromise between edge strength and surface finish: it boosts stability in interrupted cuts and heavy engagement while still permitting decent finishes on semi-finishing passes. The double-sided chipbreaker promotes repeatable chip segmentation, critical when machining brittle materials such as grey or nodular cast iron. Choose the chipbreaker and grade according to component rigidity, depth of cut and whether operations involve interrupted cuts; the present grade is optimised for continuous and lightly interrupted conditions typical in cast-iron turning. When vibration is a risk, favour lower overhang and stiffer holder geometries to exploit the insert’s mechanical advantages.

Practical handling, inventory and identification in production

The ISO-series labelling and the manufacturer SKU simplify stockkeeping and process documentation: the insert is listed as manufacturer article number 6750475 and appears under SKU 6750475-Tungaloy. Marked geometry and grade information aid quick sorting on the shop-floor and ensure the right insert is fitted for given process windows. Because the insert is double-sided and indexable, fewer items are required to cover the same machining output compared with single-sided inserts, improving inventory turnover. For new programmes, trial cuts at conservative feeds and speeds are recommended to establish stable cutting parameters before ramping productivity up.

For tailored application advice or immediate availability of Tungaloy CNMG120404 T515 inserts, contact Metav Werkzeuge for stock information and process consultation at info@metav-werkzeuge.com or call +49 2822 7131930

Technical data

• Article number: 6750475
• Manufacturer SKU: TUN6750475
• Model series: ISO-Drehwendeschneidplatten
• Material: Hartmetall
• Grade: T515
• WPL designation: CNMG120404
• Shape: rhombic
• Thickness: 4.76 mm
• Size: 12
• Corner radius: 0.4 mm
• Included angle: 80°
• Hole: with hole (cylindrical hole)
• Chipbreaker: double-sided
• Application: Drehen (turning)

Facts

• Size: 12 mm
• Thickness: 4.76 mm
• Corner radius: 0.4 mm
• Included angle: 80°
• Hole style: cylindrical

Special features

• CVD-coated carbide
• Grade optimised for cast iron
• Double-sided indexable insert
• ISO CNMG geometry, rhombic form
• Cylindrical locating hole for standard holders
• Suitable for external and internal turning

FAQ

What materials is this insert intended for?
The CNMG120404 T515 insert from Tungaloy is optimised for machining cast iron, offering a coating and substrate combination tailored to that material class.

Can this insert be used on standard CNMG holders?
Yes; the ISO CNMG geometry, cylindrical locating hole and standard thickness (4.76 mm) make the insert compatible with CNMG-compatible external and internal holders, subject to matching relief angle and tolerance class.

How does the 0.4 mm corner radius affect cutting?
A 0.4 mm corner radius increases edge strength for interrupted or heavy cuts while still permitting acceptable surface finish on semi-finishing passes when used with appropriate cutting parameters.

Is the insert indexable and how many edges are usable?
The insert is double-sided and indexable; both faces can be used, reducing the number of inserts required for equivalent cutting time compared with single-sided designs.

Which SKU or article number should be ordered for stock control?
Order using manufacturer article number 6750475 or SKU 6750475-Tungaloy to ensure the correct CNMG120404 T515 item is supplied.

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.