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White Electro corundum 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 Electro corundum 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.

Main Physical Properties

MOHS HARDNESS

9.0

BULK DENSITY

1.75-1.95g/cm3

SPECIFIC GRAVITY

3.95g/cm3

1,Used for refractory,castable

Items

0-1 1-3 3-5m m

0-100  0-200 0-320

Guarantee  Value

Typical Value

Guarantee Value

Typical Value

Chemical

Composition

Al2O3

≥99

99.5

≥98.5

99.0

SiO2

≤0.4

0.06

≤0.30

0.08

Fe2O3

≤0.2

0.04

≤0.20

0.10

Na2O

≤0.4

0.30

≤0.40

0.35

2,Used for abrasives,blasting,grinding

Items

Grains

8# 10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54#

60# 70# 80# 90# 100# 120# 150# 180# 220#

Guarantee Value

Typical Value

Chemical

Composition

Al2O3

≥99

99.50

SiO2

≤0.2

0.04

Fe2O3

≤0.2

0.04

Na2O

≤0.30

0.23

3,Used for abrasives ,lapping,Polishing

Items

Micropowder

“W”

W63 W50 W40 W28 W20 W14 W10 W7 W5 W3.5 W2.5 W1.5 W0.5

“FEPA”

F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 F2000

“JIS”

240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000#

2500# 3000# 4000# 6000# 8000#

Guarantee Value

Typical Value

Chemical

Composition

Al2O3

≥99

99.20

SiO2

≤0.4

0.08

Fe2O3

≤0.2

0.06

Na2O

≤0.4

0.35


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address:#1409,No.1 building,Lvdi Centre,Daxue south road,Zhengzhou ,China