Alumina Insulation Type ECO-20AAYou are here: Home > Products > Rigid Materials > Alumina Products > ECO-20AA
Alumina Insulation Type ECO-20AA
GENERAL
INFORMATION ECO-20AA was specially designed for use as bulk thermal insulation in furnaces with reducing atmospheres with temperatures as high as 1600°C (2912°F). For more information see "Effects of Hydrogen Gas at 1450°C on Select Fibrous Alumina Insulation Products." It is prefired, contains no organic materials and is useful in application where silica cannot be tolerated. |
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| CHARACTERISTICS & PROPERTIES | |
| Typical Composition, % | |
| Al2O3 | 98 |
| SiO2 | 2 |
| Density, g/cc (pcf) | 0.31 (20) |
| Organic Content, % | 0 |
| Color | White |
| Maximum Use Temperature, °C (°F) | 1600° (2912°) |
| Specific Heat, J/kg°K (BTU/lb °F) | 1047 (0.25) |
| Flexural Strength**, MPa (psi) @ room temp | 0.31 (45) |
| Compressive Strength**, MPa (psi) @ 10% compression | 0.11 (15) |
| Linear Shrinkage‡, % 1 hr at 1650°C (3002°F) | 1.5 |
| Thermal Conductivity**, (ASTM C177-76) W/m°K (BTU/hr ft² °f/in) | |
| 400°C (752°F) | 0.09 (0.6) |
| 800°C (1472°F) | 0.15 (1.0) |
| 1200°C (2192°F) | 0.21 (1.5) |
| Sag/Distortion, 1in. x 1in. beam on 5in. span, % after 4 hrs @ 1540°C (2740°F) | 4 |
| * | 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 bright annealing furnaces and other thermal process systems with hydrogen gas atmospheres operating to 1550°C (2822°F). Thermal insulation, supports and fixtures Solid Oxide Fuel Cells operating to 1550°C (2822°F). Backup thermal insulation in furnaces and thermal process systems operating to temperatures exceeding 2000°C (3632°F). High temperature setters, supports and process fixtures for use in reducing atmospheres. Electrical insulation in high temperature systems operating to 1550°C (2822°F). |
 MATERIAL SAFETY DATA SHEET |
| AVAILABILITY |
| STANDARD BOARDS |
| ITEM # | DESCRIPTION | PRICE* | SHIP WT. (lb.) | |
| A14503 | ECO-20AA, 24in.W x 48in.L x 1.00in.T |
$948.00 |
28 | |
| A14504 | ECO-20AA, 24in.W x 48in.L x 2.00in.T |
$1395.00 | 42 | |
| * 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 are available for immediate shipment from stock. Standard tolerances for boards are +/- 1/4in. on length and width and +/- 3/16in. on thickness.
Boards are typically produced 24in. wide x 48in. long x 1in. to 2in. thick. Custom boards and shapes smaller than a few cubic inches and larger than a cubic foot in volume can be manufactured.
Custom cylinders and shapes smaller than a few cubic inches, larger than several cubic feet, weighing up to 50 pounds, with ID’s of ½in. to 24in., wall thickness of 1in. and lengths to 48in. can be manufactured.
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. 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: 14ea, ECO-20AA, 19in.W x 31.5in.L x 1.8in.T
Custom cylinders: specify quantity, product type and size. Example: 24ea, ECO-20AA, 8in.ID x 10in.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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