Cemented carbide brazing sheets for mining tools

Cemented carbide brazing sheets for mining tools -The grades of tungsten carbide drill bit Grade Density (g/cm³) Hardness (HRA) T·R·S (N/mm2) Application YG4C 15.0 89.5 1800 Maily used as small buttons for percussion bits and as the inserts of rotary prospecting bits to cut soft,medium-hard formations. YG6 15.8 89.5 1700 Maily used as the buttons of small and mediumsized percussion bits and as the inserts of rotary prospecting bits to cut soft, medium-hard formations. YG8 14