YG1 55901TC 1/4″ Size, 1-1/2″ LOC, 4 Flute, TiCN Solid Carbide Finishing End Mill Last Chance

Applications

Featuring a 1/4″ diameter and 1-1/2″ length of cut, the YG1 55901TC solid carbide finishing end mill achieves a 6.0x length-to-diameter ratio that ensures extended reach while maintaining rigidity for precision milling tasks. Its 4-flute geometry, combined with a 30° helix angle and TiCN coating, balances chip evacuation with surface finish quality, making it suitable for finishing operations on free-machining steel and cast iron. This tools geometry and coating are well aligned with recommended general milling combinations for easy-machining steel, enabling efficient material removal and reduced tool wear. The TiCN coating enhances hardness and wear resistance, while the four-flute design supports smooth cutting action and excellent surface finish. Avoid applying this end mill to heat-resistant superalloys (HRSA ISO S), as the TiCN coating is not a good match and will degrade quickly. Additionally, the absence of a corner radius means it is not optimized for interrupted cuts where edge chipping prevention is critical.

Features

• Suitable for cutting hardened & high alloy steels, steel casting, chill casting, malleable cast iron, CrNi-steels, brass, copper, aluminum with a high percentage of silicon and abrasive plastics.