ZIRCAR Ceramics: Uniform

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102.jpg (3709 bytes) Alumina-Silica Insulation Type "UNIFORM A"

GENERAL INFORMATION

ZIRCAR Alumina-Silica Insulation Type "UNIFORM A" is a family of refractory ceramic fiber based insulations with exceptional machineability and strength. They are made of specially prepared alumina-silica based refractory ceramic fibers with inorganic silica binder which is uniformly distributed to create an evenly bonded material.

This product family is designed to deliver low thermal conductivity, excellent thermal shock resistance and stability in applications to temperatures as high as 1260°C (2300°F).

UNIFORM A materials contain no organic binders and produce no smoke or odor when heated. They exhibit excellent resistance to chemical attack at elevated temperatures making them useful in many varied high temperature applications.

CHARACTERISTICS & PROPERTIES

Type: Uniform	A1	A2
Fiber	Refractory Ceramic Fiber
Binder	Silica
Typical Composition, %
Al₂O₃	39.2	32.7
SiO₂	60.7	67.2
Loss on Ignition, 1 hr. @ 600C, %	1.3	2.4
Density, gm/cc (lbs/ft³)	0.24 (15)	0.29 (18)
Maximum Use Temp.*,C (F)	1260 (2300)
Color	Off White - Cream
Linear Shrinkage,^‡ %
24 hrs at 1000°C (1832°F)	2.3^‡, 2.6**	2.8^‡, 4.2**
24 hrs at 1260°C (2300°F)	5.0^‡, 9.5**	6.0^‡, 12.2**
Modulus of Rupture**, MPa (psi)	.45 (65)	1.03 (150)
Compressive Strength**, MPa (psi) at 10% Compression	0.11 (16)	0.37 (53.7)
Thermal Conductivity, ASTM C177-76, W/m°K (BTU/hr ft² °F/in)
400°C (752°F)	0.07 (0.5)	0.10 (0.8)
800°C (1472°F)	0.11 (0.9)	0.17 (1.2)

*	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.

MATERIAL SAFETY DATA SHEET

AVAILABILITY

STANDARD BOARDS

ITEM #	DESCRIPTION	PRICE*	SHIP WT. (lb.)
A2-01	UNIFORM A1, 24"W x 36"L x 1"T	$88.00	22
A2-02	UNIFORM A1, 24"W x 36"L x 2"T	$158.00	29
A2-04	UNIFORM A1, 24"W x 36"L x 4"T	$256.00	55
A2A-01	UNIFORM A2, 24"W x 36 "L x 1"T	$132.00	24
A2A-02	UNIFORM A2, 24"W x 36"L x 2"T	$237.00	32
A2A-04	UNIFORM A2, 24"W x 36"L x 4"T	$384.00	61
* 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 +/- 1/8in. on thickness.

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 can be up to 96in. long.

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

Custom boards: specify quantity, product type and size. Example: 24ea., UNIFORM A2, 22in.W x 31.5in.L x 1.75in.T

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