M28M20M14M10M7M5 White corundum Chemical Composition% Al2O3:99.2-99.6% Fe2O3:0.04-0.08% Na2O:0.23-0.35% Physical Properties B.D:1.75-1.95g/cm3 Specific Gravity:3.95g/cm3 Mohs Hardness:9.0 Application: Ceramic filter plates,refractory Bonded abrasives and Coated abrasives Surface treatment/finishing Lapping, polishing,decorative non-skid tile, and pressure blasting. Ceramic Tiles special ceramics Fluidized Bed Furnaces and Skin / Dental Care Grinding high carbon steel, high-speed steel and chilled steel AVAILABLE SIZES: JIS STANDARD:#8 #10 #12 #16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 #10000 FEPA STANDARD:F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000 4# 3# M28 M20 M14M10M7M5