Boron Carbide Boron carbide is an ideal raw material for production of refractory products, abrasive materials, and for ceramic products. Grain D50( um) Total B% Total C% Fe2O3% Si% BC% F60 250 77-80 17-21 0.25 -0.45 0.2 -0.4 96-98 F70 212 F80 180 F90 150 F100 125 F120 106 F150 75 F180 75-63 76-7 9 17-21 0.25-0.45 0.2-0.4 95-97 F220 63-53 F230 53 3.0 F240 44.5 2.0 F280 36.5 1.5 75-79 17-21 0.3-0.6 0.3-0.8 93-97 F320 29.2 1.5 F360 22.8 1.5 F400 17.3 1.0 F500 12.8 1.0 74-78 17-21 0.4-0.8 0.4-1.0 90-94 F600 9.3 1.0 F800 6.5 1.0 F1000 4.5 0.8 73-77 17-21 0.5-1.0 0.4-1.2 89-92 F1200 3.0 0.5 F1500 3 0.8 60# -150# 250-75 76-80 17-21 0.3 max 0.5 max 95-98 -100 mesh 150 max 75-79 17-21 0.3 max 0.5 max 94-97 -200 mesh 90 max 74-79 17-21 0.3 max 0.5 max 94-97 -325 mesh 45 max 73-78 17-21 0.5 max 0.5 max 93-97 -25um 25 max 73-78 17-21 0.5 max 0.5 max 91-95 -10um 10 max 72-76 17-21 0.5 max 0.5 max 90-92