A common hardness test done with a round, very hard steel ball which is pressed into the material being tested. The diameter of the mark left in the steel is measured and a table is used to convert this to a Brinell Hardness Number. The higher the number, the harder the steel. See hardness testing.
Norton Abrasives: the Fastest Material Removal in the Industry
Norton NorZon® Plus depressed center wheels now utilize a proprietary blend of patented, newest generation Norton SG ceramic alumina and Norton BlueFire™ zirconia alumina abrasives, combined with a high performance bond system for significantly improved grain micro-fracturing. The upgraded line has also been expanded with Norton NorZon Plus Fast Cut™ Depressed Center Wheels, offering the fastest material removal in the industry.
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