ZIRCONIA (YSZ) GRINDING MEDIA - Inframat Advanced MaterialsZirconia (YSZ) grinding media is the most durable and efficient media for ball milling and attrition milling of ceramic materials. Zirconia grinding media provides a.zirconium oxide grinding ball,Ceramics Grinding Media - Glen Mills Inc.Fused Zirconium oxide Grinding Media (sp.gr. 3.8) Smooth surface leads to low mill wear and longevity. Sizes from 200 microns to 2.5mm. Medium cost.