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Brown Fused Alumina


Brown fused alumina is made of bauxite, anthracite coal, and smelted in electric-arc furnace of high temperature more than 2000 degrees. Abrasives tools made by Haixu/Sicheng brown fused alumina are suitable for metal with high tensile(like: steel, malleable iron, bronze etc). Suitable for product high consolidation abrasive, and suitable for grinding, polishing, blasting, precision casting etc. Haixu/Sicheng brown fused alumina is also used for refractory material. Brown fused alumina with characteristics like: high purity, good crystalline liquidity, low coefficient of linear expansion, corrosion resistance, high temperature, high strength.


Main Physical Properties

MOHS HARDNESS

9.0

BULK DENSITY

1.75-1.95g/cm3

SPECIFIC GRAVITY

3.6-3.9g/cm3

VOLUME DENSITY

3.6-3.9g/cm3

MELTING POINT

2250°C

MAXIMUM SERVICE TEMPERATURE

1900°C


PROPERTIES TYPE

ABRASIVES

FEPA

8# 10# 12# 14# 16# 20# 22# 24#

30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220#

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

≥94

94.5

SiO2

≤2

1.4

Fe2O3

≤2

1.2

TiO2

≤4

3.2




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