Dormer Pramet C428 18.0mm HSS-E-Powder Metal Alcrona Primax Flatted Shank Multi-Flute Roughing (HRA) Standard Length End Mill DIN 844 K

The Dormer Pramet C428 18.0 mm HSS-E-Powder Metallurgical End Mill is a short-series roughing tool built for durability and precision on tough metals. Designed for shoulder milling, slot milling, and ramping, it delivers efficient material removal with a robust 4-flute geometry and a protective Alcrona Primax coating.

• Diameter: 18.0 mm
• Cutting length (L1): 32 mm
• Overall length (OAL): 92 mm
• Reach / neck relief: 43.5 mm
• Shank: Weldon 16 mm
• Material and coating: Powder metallurgical HSS‑E with Alcrona Primax coating
• Flutes: 4
• Helix angle: 35°
• Rake angle: 12°
• Profile: HRA asymmetrical fine pitch
• Standard: DIN 844 K
• Applications: Shoulder milling, slot milling, and ramping
• Compatible materials: Alloy steel, stainless steel, cast iron, copper and copper alloys, high-temperature alloys

With its asymmetrical fine-pitch HRA profile and a 4-flute geometry, this end mill provides controlled chip formation and steady material removal in demanding milling tasks. The powder-metallurgical HSS‑E core, enhanced by Alcrona Primax coating, offers improved wear resistance and longer tool life under roughing conditions. The 16 mm Weldon shank ensures solid clamping and stability in standard milling chucks, while the neck relief and extended reach help clear chips and minimize interference during shoulder, slot, or ramping operations. This makes the C428 a reliable, multipurpose choice for production environments working with alloy steels, stainless steels, cast irons, and special alloys.