Iscar EC-A2 040-050/16C6R.5H55 IC702 2-Flute Carbide Ball Nose End Mill

This is a new Iscar EC-A2 040-050/16C6R.5H55 solid carbide ball nose end mill from Iscar's ENDMILL series, manufactured in IC702 grade — a fine-grain submicron carbide substrate with Iscar's nACo (nano-crystalline AlTiN-based) PVD coating, identifiable by its distinctive blue color, engineered for high hardness, heat resistance, and extended tool life in hardened steels and difficult-to-cut alloys. The part number decodes as follows: EC-A2 = 2-flute ball nose end mill with cylindrical shank; 040 = 4.0 mm cutting diameter; 050 = 5.0 mm neck/reach diameter relief; 16 = 16 mm shank diameter; C6 = overall length category; R.5 = 0.5 mm ball nose radius (1.0 mm ball diameter); H55 = 55° helix angle. The 16 mm straight shank is compatible with ER collet chucks and shrink-fit holders accepting 16 mm shanks, and the long-reach reduced-neck geometry makes this tool well-suited for deep-cavity milling, die/mold work, and finishing operations in hardened steels up to ~65 HRC. The 55° high-helix design reduces cutting forces and improves surface finish in finishing passes on hardened and difficult materials.

Product Specifications