... bulk density silicon carbide abrasive grain. To get this kind of grains, we specially process the ingots, separate the magnetic material ... Color GreenShape AngularCrystal Form Alpha silicon carbide in hexagonal systemSpecific Gravity 3.20Hardness HV3280-3400, 9.15 Mohs scaleMagnetic Material 0 ... 220.Microgrit Sizes Available:F240, 280, 320, 360, 400, 500, 600, 800, 1000, 1200.JIS240,280,320,360,400,500 ...