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Most about this product White fused alumina JIS4000

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.
Model: WA JIS4000
Chemical compositions
Physical properties
Items
Value of specification (%)
Items
Property
Al2O3
99.00min
Color
White
SiO2
0.15max
Bulk density
1.75-1.95g/cm3
Na2O
0.35max
Grain density
3.90g/cm3 min
Fe2O3
0.08max

hardness
Morse hardness
9
Micro hardness
21600-22600kg/mm3


content of magnetic substance
0.0023%max