Dormer 2134131159 HSS-E DIN 844L Roughing End Mill

This is a new Dormer roughing end mill manufactured in Poland to DIN 844 L (long series) standard in HSS-E (cobalt-alloyed high-speed steel, typically 8% Co) — a grade that provides significantly higher heat and wear resistance than standard M2 HSS, making it suitable for machining steels, stainless steels, cast iron, and tough alloys. The serrated (nicked) peripheral cutting edges break chips into short segments, reducing cutting forces and enabling aggressive material removal rates in roughing operations before a finishing pass. The 'PL' designation on the label is Dormer's internal code indicating the manufacturing plant (Poland), not a performance suffix. The uncoated bright finish is visible in the photos; no TiN, TiCN, or TiAlN coating is present. Compatible with standard Weldon-flat or collet-style end mill holders accepting the corresponding shank diameter.

Product Specifications