You are here: HomeProducts > Flexible Materials > Alumina Mat

102.jpg (2192 bytes)  Alumina Mat

GENERAL INFORMATION
ZIRCAR  Alumina Mat is a layered, low density flexible mat made of 100% polycrystalline alumina fiber. It is light in weight, contains virtually no shot and is designed for use to temperatures as high as 1650C (3002F). 

The high purity aluminum oxide 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. Alumina Mat resists attack in aggressive chemical environments due to its high purity & refractory nature. It is stable in vacuum, inert or reducing atmospheres.

Alumina Mat is useful as insulation packing in furnace spaces, around furnace sight tubes & ports and fill in expansion joints and masonry cracks.

Alumina Mat  offers significant advantages over vitreous alumino-silicate fiber blankets, including:
• High temperature dimensional stability
• Resilience and flexibility after exposure to elevated temperatures
• Exceptional refractoriness

CHARACTERISTICS & PROPERTIES

Composition, %

     Al2O3

95-97

     SiO2

3-5

     Trace Elements (total)

<0.5

          Sodium, ppm 

875

          Calcium, ppm  

525

Loss on Ignition, % after 2 hr @ 800C

0

Fiber Diameter, median, micron

3.0 - 3.5

Shot Content (non-fibrous material)

negligible

Thickness, mm (in.)

35 (1.38)

Color

White

Maximum Use Temp.* ,C (F)

1650 (3002)

Melting Temp., C (F)

2036 (3700)

Density, g/cc (pcf)

.035 (2.2)

Specific Heat, J/kg K (BTU/lb F)

1047 (0.25)

Fiber Tensile Strength, MPa (psi)

1.5 x 10 (220 x 10)

Young's Modulus, MPa (psi)

3.2 x 105 (47 x 106)

Hardness of Fiber, (Mohs Scale)

6

Linear Shrinkage, % 

     1200C (2192F)

0.0

     1425C (2600F)

2.2

     1535C (2800F)

3.0

     1650C (3002F)

4.0

Thermal Conductivity** ASTM C177-76 W/m K (BTU/hr ft F/in)

     315C (599F)

0.07 (0.50)

     540C (1000F)

0.09 (0.77)

     760C (1400F)

0.13 (1.03)

     980C (1796F)

0.17 (1.33)

     1200C (2192F)

0.23 (1.65)

     1425C (2597F)

0.30 (2.15)

Thermal Conductivity of Alumina Mat (6PCF) in heat treating atmospheres

* Maximum use temperature is dependent on variables such as stresses, both thermal and chemical, and the 
chemical environment that the material experiences.
** Properties expressed parallel to thickness.
Properties expressed perpendicular to thickness.

SUGGESTED APPLICATIONS

Primary thermal insulation in low mass furnaces and thermal process systems operating to 1650C (3002F).

Backup thermal insulation in furnaces, solid oxide fuel cells and thermal process systems operating to high temperatures.

General high temperature furnace repair.

Furnace insulation packing around sight tubes, ports, expansion joints, and masonry cracks.

msds.jpg (1069 bytes)MATERIAL SAFETY DATA SHEETmsds.jpg (1069 bytes)

AVAILABILITY

STANDARD MAT

ITEM #

DESCRIPTION

PRICE* 

SHIP WT. (lb.)

 

D9201

ALUMINA MAT, 18in.W x 24in.L SHEET

$171.00

6

D9202

ALUMINA MAT, 24in.W x 72in.L ROLL

$445.00

12

D9203

ALUMINA MAT, 24in.W x 48.5' L ROLL

$2467.00

35
 *Note: Prices shown apply to sales within the United States. Contact us for information regarding international commerce.

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 items are available for immediate shipment from stock. 

Custom sizes, chemistries and preparations 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 mat: order online or specify quantity, item # and description.

Custom shapes and preparations: specify quantity, product type and description (by supplying drawings, sketches, written descriptions or material specifications).

Copyright 2001  ZIRCAR Ceramics, Inc.