PFA Pink Fused Alumina Chemical Composition Al2O3:98.5-99.2% Cr2O3:0.2-2.0% Na2O:0.50-0.70% Physical Properties Basic minerals:α-Al2O3 Crystal size:600-2000um True density(g/cm3):3.90 Bulk density(g/cm3):1.40-1.91 Mohs Hardness:9.0 Knoop hardness(kg/mm2):2200-2300 Application: The abrasive tools made of it feature excellent durability and high processing cleanness,which are suitable for the precision grinding of the measuring tools,lathe main shafts,instruments and apparatus parts,threading workpieces and samplers,etc. Available Sizes: F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 F240 F280 F320 F400 F500 F600 F800 F1000 F1200 F1500 F2000 JIS#24 JIS#30 JIS#36 JIS#46 JIS#54 JIS#60 JIS#80 JIS#100 JIS#120 JIS#150 JIS#180 JIS#220 JIS#240 JIS#280 JIS#320 JIS#400 JIS#600 JIS#800 JIS#1000 JIS#1200 JIS#1500 JIS#2000 JIS#2500 JIS#3000 JIS#4000 JIS#6000 JIS8000