Dormer Pramet C428 22.0mm HSS-E-Powder Metal Alcrona Primax Flatted Shank Multi-Flute Roughing (HRA) Standard Length End Mill DIN 844 K

Engineered for durable material removal in demanding milling tasks, the Dormer Pramet C428 22.0mm HSS-E-Powder Metall Alcrona Primax End Mill delivers reliable roughing performance for alloy and tool steels, cast iron, and high-temperature alloys. With a four-flute geometry, asymmetrical fine-pitch profile, and a robust coating, this end mill handles shoulder, slot, and ramping applications with consistent efficiency.

• Product code: C428
• Diameter: 22.0 mm
• Flutes: 4
• Length of cut: 38 mm
• Overall length: 104 mm
• Reach with neck relief: 53.5 mm
• Shank: Weldon, 20 mm
• Material: Powder-metallurgical HSS-E with Alcrona Primax coating
• Coating: Alcrona Primax
• Helix angle: 35°
• Rake angle: 12°
• DIN standard: 844 K
• Applications: Shoulder milling, slot milling, and ramping
• Materials suited: Alloy steel, tool steel, stainless steel, cast iron, copper and copper alloys, and high-temperature alloys

The combination of a powder-metallurgical HSS-E substrate with an Alcrona Primax coating delivers enhanced wear resistance and toughness in challenging machining environments. The four-flute design supports efficient chip evacuation and stable cutting, while the 35° helix and 12° rake angle promote smooth engagement and controlled chip formation during shoulder milling, slot milling, and ramping. The long reach with neck relief enables deeper pockets and ramp passes without sacrificing rigidity, and the 20 mm Weldon shank ensures secure clamping in standard holders for repeatable performance at higher feeds and speeds. This end mill is a dependable choice for shops machining alloy and stainless steels, cast iron, copper alloys, and high-temperature alloys, where precise roughing and reliable tool life matter.