... Super-well Micro grain carbide rod: 1.WC=87.5%, Co=12.5%, TRS>4200N/mm2; 2. Hardness>92.4HRA, Grain ... ; 1. Super-well Micro grain carbide rod: WC=87.5%, Co=12.5%, TRS>4200N/mm2; Hardness>92.4HRA, Grain size ... 10 25 10 71 HJ 11X28X12DXL80 11 28 11 80 CNC machine tool Micro Grain Carbide Fluetd reamer