White Fused Alumina

White Fused Alumina was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling. It is white with the main crystal phase alpha-Al2O3.The white alumina produced in titling electric arc furnace has the advantage of high bulk density and low porosity and the volume stability and thermal shock resistance can be improved.

 

Applications :
• Cleaning engine 
• Heads, valves, pistons and turbine blades in the aircraft 
• Automotive industry 
• Non ferrous forging 
• Castings and component

MODEL:  WFA 320#
chamical ananlysis(%)	physical properties
Al2O3	≥99.4	color	white
SiO2	≤0.04	crystal form	a-Al2O3
NaO2	≤0.22	bulk density	1.75-1.95g/cm3
Fe2O3	≤0.04	true density	3.95-3.97g/cm3
K2O	≤0.01	mosh hardness	9.0min
usage	refractory material

 

Physical property:

Mohs Hardness	Bulk Density	Specific Gravity	Volume Density	Melting Point	Maximum service temperature
9.0	1.75-1.95g/cm3	3.95g/cm3	3.6g/cm3	2250°C	1900°C

Chemical composition:

Al2O3	Fe2O3	Na2O	SiO2	CaO	K2O
≥99.5%	≤0.08%	≤0.30%	≤0.10%	≤0.03%	≤0.03%

* Usage:

1. The process of blasting TV screens

2. The cutting of silicon wafer 

3. The process of cleaning and blasting tooth model

4. Precision sand casting

5. High refractory and other ceramic additives

6. to make sandpaper & sandcloth