1) Co:10-12%. 2) Grain size 0.5-0.6um 3) DIN or ANSI standard 4) ISO9001:2000 5)Coated or uncoated ... =90%, Co=10%, TRS>3800N/mm2; Hardness>91.8HRA, Grain size: 0.5,0.6,0.8um; High quality of wearability ... inspected by Zoller measuring and inspection machine. 5. Work Piece: Carbon steel, alloy steel, cast steel, tooling steel, mould steel, heat ...