Aluminium machining requires careful balancing, influenced by the tool's characteristics. Cutting too aggressively can cause a built-up edge that affects surface finish, while a tool with inadequate sharpness will increase cutting forces, heat, and shortens tool life.
TaeguTec has introduced an ideal solution with the launch of the TTA101 insert grade. This new ta-C coated milling insert offers a genuinely different approach to non-ferrous machining.
The exciting new TTA101 grade is now available across TaeguTec's established AL chip former milling insert family, covering the APCT, AVCT, XEVT, 3PHT, 4NHT, and 4WHU insert designations. This makes the new grade compatible with TaeguTec’s ChaseMill, WinMill, ChaseAlu, MillRush, Chase4Mill, and Chase4Finish cutting tool platforms, offering remarkable flexibility for end users. Whether the application involves face milling, pocketing, or finishing, the impressive TTA101 grade can be integrated into existing toolholding arrangements, simplifying inventory management while significantly enhancing performance.
The defining feature of the TTA101 grade is its ta-C coating, applied at a thickness of less than 0.5µm. Compared to conventional coatings, TaeguTec’s ta-C reduces the inevitable edge rounding that coatings add to an insert. In aluminium machining, where sharpness directly affects surface finish, edge geometry is crucial. By maintaining the coating below 0.5µm, TaeguTec preserves the insert's sharp cutting edge after coating. The result is a tool that enters the cut smoothly, produces lower cutting forces, and achieves surface finishes demanded by aluminium components in aerospace, automotive, and electronics industries.
A persistent frustration in aluminium machining is built-up edges, and with its low coefficient of friction, the ta-C coating tackles this problem directly. Material simply does not adhere to the coating in the way it does with uncoated or conventionally coated inserts, and chip evacuation remains smooth and uninterrupted throughout the cut. For high-volume production environments where a consistent, repeatable surface finish is non-negotiable and this characteristic alone represents a significant process improvement.
The TTA101 achieves a hardness of HV 5000 or higher. This exceptional hardness translates directly into resistance to abrasive wear, so inserts retain their cutting edge for longer and deliver consistent performance across extended production runs rather than degrading progressively. Complementing this is the coating's strong high-temperature oxidation resistance.
The addition of the TTA101 grade completes TaeguTec's aluminium milling insert offering, providing a ta-C-coated option alongside the existing uncoated K10 grade across the most widely used insert geometries. Manufacturers now have a clear upgrade path for applications where built-up edge, surface finish or tool life have been limiting factors, without needing to change cutters.