Dormer Pramet C428 12.0mm HSS-E-Powder Metal Alcrona Primax Flatted Shank Multi-Flute Roughing (HRA) Standard Length End Mill DIN 844 K

The Dormer Pramet C428 12.0mm HSS-E-Powder Metal Alcrona Primax Flatted Shank Multi-Flute Roughing End Mill (DIN 844 K) is a purpose-built cutting tool for heavy material removal in steels and tough alloys. With a 12 mm diameter and a short-series design, it delivers robust performance for shoulder milling, slot milling, and ramping in demanding environments.

• Diameter: 12 mm
• Length of Cut (LOC): 26 mm
• Overall Length: 83 mm
• Reach / Neck Relief: 37.5 mm reach with neck relief for deep pockets and shoulder work
• Shank: 12 mm Weldon shank for secure clamping
• Flutes: 4-flute configuration for balanced material removal and finish
• Material: Powder Metallurgical HSS-E for high hardness and toughness
• Coating: Alcrona coating for improved wear resistance and lower friction
• Helix: 35° for efficient chip evacuation and smooth cutting
• Rake Angle: 12° rake to support shoulder milling and ramping
• Standard: DIN 844 K compatibility
• Applications: Shoulder milling, slot milling, ramping in alloy and tool steel, stainless steel, cast iron, copper and copper alloys, and high-temperature alloys

This end mill is designed to deliver steady performance under demanding roughing conditions. The asymmetrical fine-pitch HRA profile optimizes chip control and cutting efficiency, while the powder-metallurgical HSS-E base combined with Alcrona coating extends tool life in tough materials. The Weldon shank ensures secure mounting, and the tool’s geometry supports predictable chip flow and consistent material removal across a range of alloys and metals. Ideal for shops requiring reliable, high-output roughing in hard-to-reach pockets and tight shoulder milling applications.