ZTA 280 Zirconia Alumina Balls
Description
Technical Parameters
Introduction
Mainly used in calcium carbonate, kaolin, zircon sand, pigment, dyes, graphite, coatings, metal mining industries used as grinding and dispersion media. The beads can also be used for shot peening for shot peening polishing and other metal surface treatment. According to the customer’s different grinding equipment, we can match different density grinding beads.
Properties
Good roundess, high sphericity, the surface has excellent gloss. The product is compact in sintering and has no defects such as porosity and so on.
Excellent toughness, higher crushing strength than ordinary alumina beads non-fragmentation in long-term high-speed operation.
Good stability, acid and alkali resistance.
Low equipment attrition.
Size
∅0.2-0.4mm | ∅0.4-0.6mm | ∅0.6-0.8mm | ∅0.8-1.0mm | ∅1.0-1.2mm |
∅1.2-1.4mm | ∅1.4-1.6mm | ∅1.5-2.0mm | ∅2.0-2.5mm | ∅2.5-3.0mm |
∅3.0-3.5mm | ∅4mm | ∅5mm | ∅8mm | ∅10mm |

Technical Data
ZTA280 | ZTA320 | ZTA370 | ZTA380 | ZTA450 | ZTA470 | |
AL2O3(%) | ≥57 | ≥70 | ≥87 | ≥66 | ≥5 | ≥3 |
ZrO2(%) | ≥5 | ≥5 | ≥5 | ≥18 | ≥62 | ≥70 |
SiO2(%) | ≤30 | ≤20 | ≤5 | ≤12 | ≤30 | ≤24 |
Bulk density(g/cm³) | ≥2.80 | ≥3.15 | ≥3.70 | ≥3.78 | ≥4.48 | ≥4.60 |
HV Hardness(Gpa) | ≥7 | ≥8 | ≥12.5 | ≥11 | ≥10 | ≥10 |
Crushing Strength(N) | ≥25 (∅1.5-2) | ≥800 (∅13.5) | ≥1000 (∅3) | ≥12000 (∅8) | ≥1200 (∅3) | ≥1300 (∅3) |
Water absorption | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 | <0.01 |
Wear loss rate(g/kg.h) | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 | ≤1.5 |
Sphericity | ≥95% | ≥95% | ≥95% | ≥95% | ≥95% | ≥95% |



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