Index/name

Ordinary aluminum silicate fiber blanket

High-quality aluminum silicate fiber blanket

High-alumina fiber blanket

Dry needle-punched blanket standard type

Zirconia-containing aluminum silicate fiber blanket

Aluminum silicate fiber brick

Aluminum silicate fiber rope

Chemical

composition%

Al2O3

46

>50

>60

-

>38

>46

>46

SiO2

<50

<48

<38

-

<1.0(ZrO2)

52

52

Fe2O3

<1.2

<1.0

<1.0

-

<1.0

1.2

1.2

Fiber diameter (microns)

1-4

1-4

1-4

2-4-

-

1-4

-

bulk densityKg/m³

≥150

≥150

≥200

≥90

≥95

≥300

≥450

Shot content%(>0.22mm)

<4

<4

<4

-

<10

<5

<5

Thermal ConductivityW/m.k

<0.045

<0.040

<0.045

<0.038

<0.055

<0.068

<0.068

Max. Service Temperature℃

1100

1200

1200

1250