Alumina-Silica Insulation Type ASH You are here: Home > Products > Rigid Materials > Alumina Silica Products > ASH
Alumina-Silica Insulation Type ASH
GENERAL INFORMATION
ZIRCAR
Alumina-Silica Insulation Type ASH is a uniformly bound combination of shot free
alumina-silica fiber and inorganic alumina binder. This 0.32 gm/cc (15 lb/ft³)
product is designed to deliver low thermal conductivity, excellent thermal shock
resistance and stability in furnaces and thermal process systems operating to temperatures
as high as 1260°C (2300°F).
Type ASH exhibits excellent resistance to chemical attack. It is unaffected by oil or water. It is however, attacked by hydrofluoric acid, phosphoric acid and strong alkalis. ASH products are pre-fired, contain no organic binders and produce no smoke or odor when heated.
CHARACTERISTICS & PROPERTIES
Typical Composition, % |
|
Al2O3 |
66 |
| SiO2 | 34 |
| Moisture & Organic Content | 0 |
Bond |
Alumina |
Density, gm/cc (lbs/ft³) |
0.32 (20) |
Maximum Use Temp.*,C (F) |
1260 (2300) |
Melting Point, °C (°F) |
1900 (3452) |
Color |
White |
Linear Shrinkage,‡ % |
|
| 24 hrs at 1100°C (2012°F) | 2 |
| 24 hrs at 1400°C (2552°F) | 4 |
Flexural Strength**, MPa (psi) |
0.25 (36) |
Compressive Strength**, MPa (psi) at 10% Compression |
0.10 (14) |
Thermal Conductivity, ASTM C177-76, W/m°K (BTU/hr ft² °F/in) |
|
| 300°C (572°F) | 0.07 (0.5) |
| 600°C (1112°F) | 0.11 (0.7) |
| 800°C (1472°F) | 0.14 (1.0) |
| 1100°C (2012°F) | 0.20 (1.4) |
Thermal Expansion Coefficient, room temperature to 500°C (932°F) |
3.5 x 10-6/°C |
| * | 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 1260°C (2300°F).
Backup thermal insulation in furnaces and thermal process systems operating to high temperatures.
Reflector tiles in infrared paper drying equipment.
Launders, distribution boxes, pouring spouts, hot tops and others involving molten metal contact.
Furnace and kiln flue and chimney linings.
Combustion chamber liners, baffles and muffles.
High temperature setters, supports and process fixtures.
Electrical insulation in high temperature systems operating to 1260°C (2300°F).
Thermal insulation in hot appliances.
AVAILABILITY
STANDARD BOARDS
|
ITEM # |
DESCRIPTION |
PRICE* |
SHIP WT. (lb.) |
|
|
A20009 |
ASH, 24in.W x 48in.L x 0.50in.T |
$399.00 |
22 | |
|
A20010 |
ASH, 24in.W x 48in.L x 0.75in.T |
$494.00 |
25 | |
|
A20011 |
ASH, 24in.W x 48in.L x 1.00in.T |
$544.00 |
28 | |
|
A20012 |
ASH, 24in.W x 48in.L x 1.50in.T |
$725.00 |
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 boards and cylinders are available for immediate shipment from stock. Standard tolerances for boards are +/- 1/8in. on length and width and +/- 1/16in. on thickness. Standard tolerances for cylinders are +/- 1/16in. on diameters and +/- 1/8in. on length. Nested cylinders are available on request. |
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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. Boards are typically produced 24in. wide x 48in. long x ½ to 2in. thick. Custom boards and shapes smaller than a few cubic inches and larger than a cubic foot in volume have been manufactured. Cylinders typically produced have 1in. to 12in.ID, ½in. to 2in. wall thickness and are up to 20in. long. Custom cylinders and shapes smaller than a few cubic inches, larger than several cubic feet, weighing up to 50 pounds, with ID’s of ¼in. to 24in., wall thickness of 1/8in. to 3in. and lengths to 48in. have been manufactured. 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. Machining to tight tolerance, 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: 24ea , ASH, 22in.W x 31.5in.L x 1.75in.TCustom cylinders: specify quantity, product type and size. Example: 12ea, ASH, 9in.ID x 11in.OD x 15in.L Custom boards, cylinders, shapes and preparations: specify quantity, product type and description (by supplying drawings, sketches, written descriptions or material specifications).
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| Custom nested ASH cylinder set consisting of a 6in.ID X 8in.OD x 28.74in.L cylinder nested inside a 8in.ID X 10in.OD x 30.71in.L cylinder. | |
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Copyright ©
2002 ZIRCAR Ceramics, Inc.
