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102.jpg (3709 bytes)  Alumina-Silica Insulation Type AXL & AXHTM

GENERAL INFORMATION
ZIRCAR Alumina-Silica Insulation Types AXL & AXHTM are strong, rigid refractory structures of high temperature ceramic fibers and high purity inorganic binders.  Utilizing an inorganic silica binder system Type AXL and Type AXHTM offer low thermal conductivity, excellent thermal shock resistance and are an effective thermal insulator in numerous thermal process systems.

 AXL is suitable for use to temperatures of 1260C (2300F). AXHTM is suitable for 1427C(2600F). They are noted for their rigid outer surfaces and unbound interiors. In applications where it is necessary to custom cut these materials their original exterior hardness can be easily restored with the use of ZIRCAR Silica Rigidizer Type SI-RIG

AXL & AXHTM contain no organic binders and produce no smoke or odor when heated.

CHARACTERISTICS & PROPERTIES

  AXL AXHTM
Color White to tan with light brown areas

Typical Composition, %

   Al2O3

38

59

   SiO2

62

41

   Organics

0

0

Bulk Density, gm/cc (pcf)

0.28 (18)

0.26 (16)

Maximum Use Temperature*, C (F)

1260 (2300)

1427 (2600)

Linear Shrinkage, %

   24 hrs. at 1000C (1832F)

1.8

-

   24 hrs. At 1200C (2192F)

2.5

0.75

Thermal Conductivity, W/mK (BTU/hr ft F/in)  

   400C (752F)

0.10 (0.8)

0.08 (0.6)

   800C (1472F)

0.17 (1.2)

0.14 (1.0)

   1100C (2012F)

0.22 (1.5)

0.26 (1.7)

Flexural Strength**, Mpa (psi)

0.17 (26)

0.14 (21)

Compressive Strength**, Mpa (psi)  at 10%  Compression

0.05 (8.1)

0.03 (4.8)

Durometer**, ASTM 02240, (PTC Type A, Model 306L)

≥20

≥15
* Maximum use temperature is dependent on variables such as stresses, both thermal and mechanical, 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 1260C(2300F) for AXL and 1480C (2696F) for AXHTM.

Backup thermal insulation in furnaces and thermal process systems operating to high temperatures.

Launders, distribution boxes, pouring spouts, hot tops and others involving molten metal contact.

Vestibule Blocks in semiconductor processing diffusion furnaces.

Furnace and kiln flue and chimney linings.

Combustion chamber liners, baffles and muffles.

High temperature setters, supports and process fixtures.

Electrical insulation in systems operating at elevated temperatures.

Thermal insulation in hot appliances.

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AVAILABILITY

STANDARD BOARDS

ITEM #

DESCRIPTION

PRICE*

SHIP WT. (lb.)

 

CX10260

AXL, 24in.W x 36in.L x 1in.T

$205.50

23

CX10270

AXL, 24in.W x 36in.L x 2in.T

$334.50

32

CX10280

AXL, 24in.W x 36in.L x 3in.T

$455.50

41

CX10560

AXHTM, 24in.W x 36in.L x 1in.T

$304.00.

22

CX10570

AXHTM, 24in.W x 36in.L x 2in.T

$502.00

30
 * 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 boards and cylinders are available for immediate shipment from stock. Standard tolerance applied to all standard items as listed below. These guidelines are applied to all custom sizes unless other arrangements are made.

Tolerance

Length (in.) Width (in.) Thickness (in.)
1 2 to 6
+/- 1/4 +/- 1/4 +/- 1/8 +/- 1/4

Inside Diameter (in.) Outside Diameter (in.) Length (in.)
3/4 to 4 5 to 30 3 & 3 1/2 5 to 40 6 12 to 36
+/- 1/8 +/- 1/4 +/- 1/8 +/- 1/4 +/- 1/8 +/- 1/4

Inside Diameter (in.) Outside Diameter (in.) Length (in.)
1 to 3 1/2 5 to 18 +/- 1/4 6 12 to 36
+/- 1/8 +/- 1/4 +/- 1/8 +/- 1/4
Inside Diameter (in.) Outside Diameter (in.) Length (in.)
+/- 1/4 + 3/8 / - 1/4 +/- 1/4

Boards are typically produced up to 36in. wide x 48in. long x 1in. to 6in. thick. Custom boards and shapes smaller than a few cubic inches and larger than several cubic feet have been produced.

Cylinders typically produced have 1/2in. to 24in.ID, 1in. to 4in. wall thickness and are up to 12in. long. Custom cylinders and shapes smaller than a few cubic inches, larger than several cubic feet, with ID’s of 1/4in. to 36in., wall thickness of 1/2in.’ to 6in. and lengths to 48in. can be produced.  Semi-cylinders typically produced have 1in. to 18in.ID, 1in. to 4in. wall thickness and are up to 12in. long. Shapes smaller than a few cubic inches, larger than several cubic feet,  with ID’s of 1/4in. to 36in., wall thickness of 1/2in.’ to 6in. and lengths to 48in. can be produced.  Staved cylinders typically produced have 24in. to 84in.ID, 1in. to 5in. wall thickness and segments up to 24in. long. Shapes smaller than a few cubic inches, larger than several cubic feet,  with ID’s of 1in. and up, wall thickness of 1/2in.’ to 6in. and lengths to 48in. can be produced.

Custom boards, cylinders, shapes and preparations are available on request. Our forming processes, large inventory of custom tooling and state of the art machining techniques allow a wide variety of sizes and shapes to be made. Special geometries such as disks, rings, custom bore (round corner square, hexagonal, oval, etc.) cylinders, staved cylinders, troughs, channel, angle, custom-machined shapes and others can be fabricated. Custom machining, compositional variations and the application of surface rigidizers and hardening agents are available.

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 boards and cylinders: order online or specify quantity, item # and description.

Custom boards: specify quantity, product type and size. Example: 20ea, AXL, 20in.W x 35.5in.L x 2in.T

Custom cylinders: specify quantity, product type and size. Example: 20ea, AXHTM, 12in.ID x 16in.OD x 10in.L

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

Copyright 2011  ZIRCAR Ceramics, Inc.