Тест абразивов пескоструй электрокорунд VS песок

sandblasting abrasives test electrocorundum VS sand. Electrocorundum (corundum, aluminum oxide) Electrocorundum is a superhard material with high abrasive capacity, consisting of aluminum oxide Al2O3 (up to 99%) with a small content of impurities. The hardness of electrocorundum is inferior to diamond by only 1 unit on the Mohs scale, and the grains have sharp cutting edges and are capable of self-sharpening. widely used for sandblasting. Quartz sand is the most common type of abrasive. PRICE River sand 45-50 kg. = $ 0.50 PRICE Electrocorundum 1 kg. = $ 1