1. Yttria stab.Zirconia ball: 1)preventing material from contamination because of its extreme low wear rate. 2)high grinding efficiency. 3)lower total costs due to the long using life. 2. User: Materials for grinding and dispersing, structural ceramics, electronics ceramics, refractory ceramics, magnetic material, metallurgy, medicine, food, cosmetics, textiles, printing and dyeing, pigment and other industries. 3.Specification: Items unit specification Composition wt% 94.8% zro2 5.2% y2o3 Bulk density kg/l 3.73(2mm) Specific density g/cm3 6.02 Hardness(hv) gpa >8.5 Elastic modulus gpa 200 Thermal conductivity w/m.K 3 Crushing load kn 20 (2mm) Fracture toughness mpam1-2 9 Grain size µm 0.5 Thermal expansion coefficient(20-400 c) 10x10 -6 / c(20-400) 9.6 4. Available size: Size (mm) size (mm) size(mm) size(mm) 0.2-0.4 1.4-1.6 3 20 0.4-0.6 1.6-1.8 5 25 0.6-0.8 1.8-2.0 6.5 30 0.8-1.0 2.0-2.2 10 35 1.0-1.2 2.2-2.4 12 40 1.2-1.4 2.4-2.6 15 45 25kgs/drum