dura-52复合氧化锆珠(atz)是由钇稳定的氧化锆和氧化铝微粉经精磨，干燥后滚动成形。均一的微晶结构给珠子带来理想的耐压强度和耐磨性。相对于钇稳定的四方氧化锆珠，虽然密度稍有降低，但价格便宜为其加分不少，大部分场合能代替四方氧化锆珠，匹配的砂磨机线速度可达14米/秒。
dura-52 alumina toughened zirconia (atz) beadwas granulated from the ultra fine zirconium dioxide and aluminapowder. the consistent micro poly-crystal benefits highcompressivestrength and wear resistance of beads. although there is a lowerdensity than t-tzp (yttria-tetragonal zirconia polycristal), thelower unit cost is an obvious plus. it can replace it inmoreapplication and is competent the mills with high tip speed up to14m/s.
密度specificgravity：            5.2kg/dm3    
堆积密度bulkdensity：          3.3-3.5kg/l  
微观硬度micro hardness：           1200kg/mm2
抗压强度compressive strength：    180kgf(2mm)
粒径sizes：                     0.6-3.5mm 
包装packing：                   25kg/桶

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