1) Co:10-12%... 2) Grain size: 0.5-0.6um 3) DIN or ANSI standard ... 9001:2008... tungsten carbide milling cutters,end milling cutters,end mills, 2Flute-4Flute 1. Micrograin carbide rod: WC=90%, Co=10 ... %, TRS>3800N/mm2; Hardness>91.8HRA, Grain size: 0.5,0.6,0.8um; High quality of ... , heat-treament steel. Aluminum alloy steel, Non ferrous alloy. end mills