Dormer Pramet C492 20.0mm HSS-E-Powder Metal Alcrona Primax Flatted Shank Multi-Flute Roughing (HRA) Long Series End Mill DIN 844 L

Engineered for long-reach roughing, the Dormer Pramet C492 20.0 mm HSS-E powder-metallurgical end mill with Alcrona Primax coating delivers robust material removal for shoulder and slot milling in steel and related alloys.

• Diameter, length, and reach: 20 mm diameter; length of cut 75 mm; overall length 141 mm; reach 90.5 mm with neck relief for deep-pocket milling.
• Shank type: Weldon 20 mm shank for secure seating in tool holders.
• Material and coating: Powder-metallurgical HSS-E with Alcrona Primax coating for improved hardness, wear resistance, and heat tolerance.
• Flutes and geometry: 4-flute design with a 35° helix and 12° rake angle to optimize cutting action and chip evacuation.
• Profile: HRA asymmetrical fine-pitch geometry engineered for efficient roughing and stable performance.
• DIN standard: Built to DIN 844 L long-series specifications for reliable interchange with compatible holders and tooling setups.
• Applications: Ideal for shoulder milling and slot milling across plain carbon steel, alloy steel, tool steel, stainless steel, cast iron, copper and copper alloys, and high-temperature alloys.

This end mill balances aggressive material removal with controlled cutting forces, making it well-suited for demanding roughing passes in challenging workpieces. The combination of a long reach, secure Weldon shank, and durable Alcrona Primax coating helps maximize tool life and consistency in deep cavities and shoulders, while DIN 844 L compliance ensures smooth integration into existing machining setups.