AZ25 is an electro-fused alumina zirconia grain,produced by fusing high grade alumina and zirconia at about 2000 ??? temperature in an electric arc furnace.And then by quenching,crushing and sizing to the desired grain sizes. This alumina-zirconia(25%) grain consists of the fine primary Corundum as well as ZrO2-Al2O3 eutectic crystalline.This microstructure offers the high intrinsic grain strength and high wear resistance to dulling. AZF25 is a hard,very tough and sharp abrasive material for uses in producing large grinding wheels for foundry snagging. AZS25 is a re-shaped product based on the original AZF25 material.The grain has a very blocky shape with rounded and mulled edges,it is used mainly for producing large organic grinding wheels for steel conditioning industry.
Typical Chemical Analysis
Al2O3 | Fe2O3 | ZrO2 | SiO2 | TiO2 |
70% | 0.17% | 25% | 0.49% | 0.96% |
Physical Properties
Color | Grey |
Shape | Blocks, tough and sharp |
Crystal Form | Alpha-alumina and “a-Al2O3”+“Al2O3-ZrO2”combined tree system |
True Specific Gravity | 4.55g/cm3 |
Melting Temperature | About 1900°C |
Magnetic Material | 0.0080% |
Bulk Density(g/cm3) | 2.18 |
