Alumina Bulk Fiber Type ALBF-1You are here: Home > Products > Fibers > ALBF-1
Alumina Bulk Fiber Type ALBF-1
GENERAL
INFORMATION
ZIRCAR Alumina Bulk Fiber Type ALBF-1 is specially processed
aluminum oxide fibers which have relatively
short fiber lengths. It is suitable for use in vacuum forming of rigid boards and
shapes and as a bulk fill material. It has use at temperatures to 1700°C
(3092°F).
ALBF-1 fibers exhibit light weight, low thermal conductivity, low thermal mass and immunity to thermal shock. A minor addition of silica modifies the fiber's microcrystalline structure and act as a grain growth and prevents embrittlement that usually occurs after extended use at elevated temperatures. ALBF-1 resists attack in aggressive chemical environments due to its high purity & refractory nature. It is stable in vacuum, inert or reducing atmospheres.
ALBF-1 fibers and refractory binders yield a uniform body of 0.16 - 0.24 gm/cm3 (10-15 pcf) density, when vacuum formed from a water slurry. Silica, alumina and aluminum phosphate binders can be used to form rigid refractory thermal insulation products
ALBF-1 fiber is useful as insulation packing in furnace spaces, around furnace sight tubes & ports and fill in expansion joints and masonry cracks.
ALBF-1
offers significant advantages over vitreous alumino-silicate fibers,
including:
• High temperature dimensional stability
• Resilience and flexibility after exposure to elevated temperatures
• Exceptional refractoriness
CHARACTERISTICS & PROPERTIES
Composition, % |
|
Al2O3 |
97 |
SiO2 |
3 |
Organics |
0 |
| Alpha Alumina, wt% |
>50 |
Color |
White |
Density, gm/cc (pcf) |
3.4 (212) |
Fiber Length, mean mm (in) |
3.2 (.125) |
Mean Diameter, microns |
3 |
Maximum Use Temp.*, °C (°F) |
1700 (3092) |
Melting Point, °C (°F) |
2038 (3700) |
Specific Heat, J/kg °K (BTU/lb °F) |
1047 (0.25) |
Shot Content |
Nil |
Shipping Density, gm/cc (pcf) |
0.1 (6) |
Packed Density Range, gm/cc (pcf) |
0.1 - 0.19 (6-12) |
Linear Shrinkage, % |
|
1 hr at 1538°C (2800°F) |
2 |
1 hr at 1650°C (3002°F) |
4 |
|
Thermal Conductivity at 6 pcf packed density
|
|
* |
Maximum use temperature is dependent on variables such as stresses, both thermal and mechanical, and the chemical environment that the material experiences. |
SUGGESTED
APPLICATIONS
Backup thermal insulation in
furnaces and thermal process systems operating to temperatures exceeding
2000°C (3632°F). Vacuum forming of low-density,
high alumina fibrous ceramic materials. Additive in ceramic fiber
containing vacuum formed products to improve refractoriness
Furnace insulation packing around sight tubes, ports, expansion joints, and masonry cracks.
AVAILABILITY
STANDARD BULK FIBER ITEM # DESCRIPTION SHIP WT. (lb.) A17501 ALBF-1, 1 LB
$96.50 To place your order, please click the respective "ORDER" button
next to the item you wish to purchase. To view your shopping cart click the button to the
right. For more info -click here- Standard bulk fiber is available for
immediate shipment from stock. Custom preparations, such as
different total weight, controlled settled density and blends with other fibers
are available on request. Please contact us with your special
requirements. We are pleased to contact
you if you would like more information or want to discuss custom product
availability and pricing. To Order Standard fiber: order online or
specify quantity, item # and description. Custom fiber: specify quantity,
product type and description (by supplying drawings, sketches, written
descriptions or material specifications).
PRICE*
3
* Note: Prices
shown apply to sales within the United States. Contact us for information regarding international
commerce.
Copyright © 2001 ZIRCAR Ceramics, Inc.
