GENERAL INFORMATION
ZIRCAR
Refractory Sheet Type RS-A is a tough ceramic fiber reinforced composite
material available in standard boards and custom shapes made to customer
specifications.
These
products are made from Type RS-A Moldable. Type RS-A was developed as an asbestos board
replacement for induction coil liners and molten metal transport, and
contains no asbestos. Refractory Sheet Type RS-A is ideally suited for a wide
range of high temperature, high thermal shock applications.
Type
RS-A contains no organic binders and will produce no smoke or odors when
heated.
Type
RS-A products are available in 3 varieties: Type RS-A1 is dried to constant
weight at 100°C(212°F). These products can be remoistened to impart
moldablity. Type RS-A2 is fired for 3 hour at 600°C(1112°F) and fully
cured.
Type RS-A3 is fired, hardened with ZRCI AL-Hard at 5% pickup,
and re fired. They are substantially higher in
density than other ceramic fiber based moldable derived products.
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SUGGESTED APPLICATIONS
-
Induction Furnace components such as: channel
melter components, coil liners, coreless induction components, splash and
coil shields.
-
Non-ferrous metal handling and transport as:
spouts, troughs, and casting tips.
-
Brazing separators and fixtures for
jewelry-making as well as other industrial applications. The high Al2O3
content makes it resistant to sticking in many environments including molten
metals.
-
Ideal as high temperature gasketing material.
CHARACTERISTICS &
PROPERTIES
Typical Composition, % |
|
Al2O3 |
90 |
SiO2 |
10 |
Color |
White |
Organic Content, % |
0 |
Specific Heat, BTU/lb°F (J/kg°K) |
0.25(1047) |
Maximum Use Temp* C(F) |
1450(2642) |
Thermal Conductivity,** (estimate) |
|
W/m°K(BTU/hr ft2 °F/in) |
0.65(4.5) |
TYPE |
Type A1 |
Type A2 |
Type A3 |
Density, gm/cm3(lb/ft3) |
1.6(100) |
1.6(100) |
1.7(105) |
Porosity, % |
40 |
40 |
38 |
Modulus of Rupture,** MPa(psi)
at
room temperature
|
3.4(500) |
3.9(560) |
9.1(1330) |
Compressive Strength,** MPa(psi) at
10% deflection
|
6.9(1000) |
9.7(1400) |
17.2(2500) |
Hardness, Durometer "D" |
50 |
55 |
70 |
Pullout Strength |
|
|
|
(lbs on #10 sheet metal
screws) |
30 |
50 |
90 |
Moisture Content, % |
10 |
10 |
2 |
Linear Shrinkage‡,16
hrs soak at 1200°C(2192°F)
|
4 |
0 |
0 |
* 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.
AVAILABILITY
RS-A Shapes are typically made to customer specification.
Please contact ZRCI Sales Office for complete information.
HOME
ZIRCAR REFRACTORY COMPOSITES, INC.
P.O. BOX 489
FLORIDA, NEW YORK 10921
TEL: 845-651-2200, FAX: 845-651-1515
email: sales@zircarchina.com
This information, which is subject to
change, is offered solely for your consideration and should not be taken as a
warranty or representation for which we assume legal responsibility. It is not
to be understood as permission or recommendation to practice a patented
invention without a license and the user should determine whether relevant
patents exist.
Copyrights and trademarks are the property
of ZIRCAR Refractory Composites, Inc.
{ for technical problems viewing these pages, please contact sales@zrci.com}
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