Zirconia Alumina ZA-25

Zirconia Alumina ZA-25 is a fused abrasive material composed of aluminum oxide and approximately 25% zirconium oxide. It combines excellent toughness, impact resistance and grinding efficiency, making it ideal for heavy-duty metal grinding and abrasive applications.

zircoina alumina za25

Chemical Composition (ZA-25)

Item Min / Max Typical
ZrO₂24–27%25.8%
Al₂O₃≥72%72.6%
SiO₂≤0.70%0.50%
TiO₂≤0.70%0.35%
Fe₂O₃≤0.30%0.20%
CaO≤0.15%0.14%

Physical Properties

Property ZA-25
ColourGrey
True Specific Gravity4.30 g/cm³
Bulk Density2.00 – 2.40 g/cm³
Melting Point1950 °C

Available Grit Sizes (FEPA F)

F8 – F12 – F16 – F24 – F36 – F46 – F60 – F80 – F100 – F120 – F150 – F180 – F220 – F240 – F320 – F400 – F600 – F800 – F1000 – F1200

Particle size distribution is available according to ISO, ANSI, FEPA and JIS standards.

Packaging

40 × 25 kg plastic woven bags packed into one jumbo bag.
Custom packaging available upon request.