Specifications of zirconia balls Highly polished yttrium stabilized zirconia oxide balls, 60 times the hardness of regular steel, highly wear-resistant and resistant to acid and solvents. Different sizes of zirconia oxide grinding balls available: 0.1mm-50mm. The grinding media balls are extensively applied to in the fields of paint, ink, geology, metallurgy, electronics, construction material, ceramics, chemical engineering, light industry, medicine, environmental protection and so on. Features of zirconia oxide balls 1. High cost-effective, low wear and long lifetime 2. High specific gravity, high efficiency 3. Highly wear resistant to acid and solvents 4. Highly polished, smooth, easy to clean, low abrasion to the equipment 5. High mechanical strength, good toughness, impact resistance, no broken beads 6. Mainly used for lab planetary ball mill machine