CNMA 120412 T505 Wendeplatten - Tungaloy

Benefit from the combination of CVD-coated carbide T505 and ISO CNMA120412 geometry for efficient, economical machining of cast iron; the rhombic form with 1.2 mm corner radius provides robust edge life and consistent surface finish — order directly via Metav Werkzeuge or ask the technical team for application-specific guidance.

CNMA 120412 T505 indexable turning insert for turning — Tungaloy

A CNMA120412 T505 indexable turning insert engineered for economical external and internal turning of cast iron, compliant with ISO geometry for reliable holder compatibility.

• CVD-coated carbide grade T505 for cast iron
• ISO CNMA120412 geometry for standard holders
• Rhombic shape with 1.2 mm corner radius
• No chipbreaker, suited for specific chip control

Consistent machining performance with CVD-coated carbide

The CVD-coated carbide T505 grade is formulated for the cost-effective machining of cast iron, offering a balance between wear resistance and toughness. The CVD coating reduces flank wear and supports sustained cutting during longer production runs, while the substrate carbide ensures mechanical strength at the cutting edge. In practice, this results in fewer insert changes, more predictable tool life and steady component quality in both external and internal turning operations. The CNMA geometry maintains repeatable seating and edge position when paired with ISO-compatible holders.

Geometry and fit that simplify setup and repeatability

Designed to ISO dimensions, the CNMA120412 insert features a rhombic profile and a 1.2 mm corner radius, combined with a 0° relief angle and an 80° approach, which together influence chip flow, edge strength and surface finish. The insert’s thickness of 4.76 mm and cylindrical hole allow secure clamping in standard carriers; compatibility is determined by form, clearance angle, tolerance class, clamping method, size and thickness. This standardisation reduces setup time and ensures interchangeability between holders and tool systems, making process planning and inventory management more efficient.

System use, handling and application advice for reliable results

This indexable insert is supplied as part of an ISO-based tooling system that typically includes a suitable external holder or boring bar, shim or clamping set and replacement screws for the assembly. The delivered grade comes without a chipbreaker, which can be advantageous for certain interrupted cuts or when external chip control measures are in place; for continuous cutting and optimised chip fragmentation, select a matching insert variant with an appropriate chipbreaker. Regular inspection of the clamping condition and correct torque of the mounting screw will help to preserve cutting-edge integrity and maintain consistent part quality over series production.

Contact Metav Werkzeuge for tailored advice on the Tungaloy CNMA120412 T505 indexable insert and to place enquiries via info@metav-werkzeuge.com or +49 2822 7131930

Technical data

• Article number: 6793662
• SKU: 6793662-Tungaloy
• Manufacturer SKU: TUN6793662
• Brand: Tungaloy
• Designation: CNMA120412 T505

Facts

• Insert size: 12
• Thickness: 4.76 mm
• Corner radius: 1.2 mm
• Relief angle: 0°
• Approach angle: 80°

Special features

• Material: carbide
• Coating: CVD-coated, grade T505
• Model series: ISO turning indexable inserts
• Plate form: rhombic
• Hole: with cylindrical hole
• Chipbreaker: none
• Typical application: external and internal turning of cast iron
• System components: compatible holder, shim/clamping set, replacement screws

FAQ

What materials is this insert intended for?
The CNMA120412 T505 insert is designed primarily for machining cast iron, where the CVD-coated carbide T505 grade provides balanced wear resistance and toughness.

What does CNMA120412 mean in practical terms?
CNMA120412 denotes the ISO insert geometry and size: rhombic profile, insert size 12 and the ISO code 120412, enabling standardised fitment in ISO-compatible holders.

Is there a chipbreaker on this insert?
This specific CNMA120412 T505 version is supplied without a chipbreaker; this is suitable for certain interrupted or controlled-chip operations, while other variants with chipbreakers should be chosen for enhanced chip control in continuous cuts.

Which tool holders are compatible with this insert?
Compatibility depends on form, relief angle, tolerance class, clamping method, size and thickness; the CNMA120412 follows ISO dimensions and fits standard CNMA holders and appropriate boring bars when the holder matches these parameters.

How does the 1.2 mm corner radius affect results?
A 1.2 mm corner radius increases edge strength and can improve surface finish on roughing and semi-finishing passes, while slightly affecting cutting forces and potential tool deflection compared with smaller radii.

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.