The Dormer Pramet C428 11.0mm HSS-E powder-metallurgy end mill with Alcrona Primax coating and a flatted shank is a compact, high-performance roughing tool built for shoulder milling, slot milling, and ramping in tough metals. Its short-series geometry delivers robust material removal with dependable control in demanding environments.

• Diameter: 11.0 mm
• Length of Cut: 22 mm
• Overall Length: 79 mm
• Shank: 12 mm Weldon (flatted) shank for secure clamping
• Flutes: 4-flute geometry for efficient roughing
• Material/Construction: Powder-metallurgy HSS-E substrate
• Coating: Alcrona Primax for reduced wear and longer tool life
• Profile: HRA asymmetrical fine-pitch geometry
• Helix/Rake: 35° helix with 12° rake for smooth cutting and reduced built-up edge
• DIN standard: DIN 844 K conformity
• Applications: Shoulder milling, slot milling, and ramping
• Compatible Materials: Alloy steel, tool steel, stainless steel, cast iron, copper and copper alloys, and high-temperature alloys

Designed to maximize metal removal while maintaining control in challenging materials, this end mill combines a tough HSS-E substrate with the wear-resistant Alcrona Primax coating to extend tool life in high-heat conditions. The 4-flute configuration supports efficient chip evacuation and stable cutting in roughing passes, while the flatted 12 mm shank provides secure, slip-free clamping essential for precise, chatter-free milling. Its compact length adds rigidity in tight setups, making it a reliable choice for demanding roughing tasks across a broad range of steels, cast irons, and non-ferrous alloys.