The Dormer Pramet C413 20.0mm HSS-E TiCN Flatted Shank Multi-Flute Roughing End Mill is a robust, high-precision tool designed for heavy material removal in free machining steels, cast iron, and copper alloys. Its compact short-series design, combined with a TiCN-coated HSS-E substrate, delivers reliable roughing performance for shoulder milling, slot milling, and ramping tasks.

• Diameter: 20 mm
• Flutes: 4-flute geometry for efficient material removal
• Coating / material: HSS-E cobalt-based substrate with TiCN coating for wear resistance
• Shank: Flatted (Weldon) 20 mm shank for stable drive
• Profile: NF flat coarse pitch designed for aggressive roughing
• Length of cut: 38 mm, enabling productive roughing in pockets and slots
• Overall length: 104 mm with neck relief for additional reach
• Reach with neck relief: 53.5 mm
• Helix / rake: 30° helix and 12° rake angle for smoother entry and controlled cutting
• DIN standard: conformant with DIN 844 K
• Applications: shoulder milling, slot milling, and ramping in plain carbon and alloy steel, cast iron, and copper/copper alloys

In practice, the C413 brings dependable roughing performance with precise chip control and longer tool life thanks to the TiCN coating and high-speed capable HSS-E substrate. The 30° helix aids smooth cutting in deeper pockets, while the 12° rake angle helps manage cutting forces during shoulder and ramp milling. This end mill is well-suited for production environments that require quick, reliable material removal across common ferrous and non-ferrous materials without sacrificing part quality.