The Dormer Pramet C428 is a 32 mm diameter HSS-E powder-metallurgical roughing end mill engineered for demanding metalworking tasks. Designed for shoulder milling, slot milling, and ramping in tough materials, it combines robust geometry with a reliable DIN 844 K shank standard.

• Diameter: 32 mm
• Length of cut: 53 mm
• Overall length: 133 mm
• Reach with neck relief: 72.5 mm
• Shank: Weldon, 32 mm
• Coating / material: Powder-metallurgical HSS-E with Alcrona Primax coating
• Flutes: 6
• Helix angle: 35°
• Rake angle: 12°
• Cutting profile: HRA asymmetrical fine pitch
• DIN standard: DIN 844 K
• Recommended operations: shoulder milling, slot milling, ramping
• Material compatibility: suitable for alloy and tool steel, stainless steel, cast iron, copper or copper alloys, and high-temperature alloys

This roughing end mill is built for efficiency and durability in metal removal. The six-flute configuration promotes effective chip evacuation and stable engagement, while the 35° helix reduces cutting forces for smoother operation. The Alcrona Primax coating minimizes wear and helps sustain sharpness during long cycles, and the powder-metallurgical HSS-E substrate provides a balanced combination of hardness and toughness. With a Weldon 32 mm shank, it delivers secure clamping and precise alignment for repeatable results. The tool’s geometry is well-suited to heavy-duty roughing in a range of ferrous and non-ferrous alloys, delivering reliable performance in automotive components, mold work, and general precision machining.