ZFA Zirconia fused alumina corundum aluminum oxide

ZFA Zirconia fused alumina corundum aluminum oxide

Chemical Composition(%)
Items Al2O3 ZrO2 TiO2 Fe2O3 SiO2
ZA25 68-72 24-30 ≤1.5 ≤0.5 ≤1.0
ZA40 55-57 35-44 ≤1.5 ≤0.5 ≤1.0
Physical Properties
Crystal Form: Monoclinic tetragonal system
Reaction with acid and alkali: no
Reaction with carbon: Forming carbide since 1650C
Color: Grey
True Density: 4.20g/cm3
Bulk Density :2.18g/cm3
Moh's hardness :9.0
Knoop hardness :1450-2000kg/cm2
Melting point :1900C
Maximum service temperature: 1700C
Specific heat capacity(cal/g.C) :0.2205(50-500C)
Heat conductivity :0.2718 cal/cm2.sec.C
Linear expansivity(X10-6) ;6.82(100-700C)
Main Applications
1.Making zircon fused alumina brick and building materials
2.Used for making bonded abrasives products,and process of grinding,sandblasting,surface treatment of metal products and other materials.
3.With good melt erosion resistance,Zirconia fused alumina has good grinding effect on steel,iron casting,heat resistant steel and other alloy materials.
4.Zirconia fused alumina can be made for heavy duty Zirconia fused alumina grinding wheel,snagging,cutting disc,Fiber disc,grinding rails,high speed abrasive belts etc
5.Used for making coated abrasives products,
6.Used for making lapping paste,polishing wax,emery cloth,sandpaper etc