Properties

Chemical Component

Item

Unit

Value

Assay(%)

Value

Bulk density

t/m³

2.4-2.6

AL₂O₃

20-25

Specific heat

J/Kg•K

836

SiO₂+A₂LO₃

>92

Coefficient of heat conductivity

W/m•K

2.7-2.9

Fe2O3

<1

Hardness

≥6.5

Abrasion

%

0.05

Water absorption

%

<1