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REFRACTORY SHEET TYPE RSLE-501
CYLINDERS
GENERAL INFORMATION
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ZIRCAR Refractory Sheet Type
RSLE-501 is a low expansion high strength reinforced silica
matrix composites in a cylindrical form. This remarkable material
was designed for use as a high strength, durable insulator in
induction heat treating applications. RSLE-501's very low thermal
expansion coefficient and high hot strength combine to give it
thermal shock resistance not found in other structural ceramic
materials.
RSLE- 501 exhibits a very low coefficient of
expansion 0.3 x 10-6 °C which
provides remarkable resistance to the thermal shock up to
1200°C (2192°F) in an oxidizing atmosphere and permits its use with rapid
variation in temperature in that zone. Beyond 1200°C (2192°F) it
will transforms into a crystalline structure, while maintaining its
properties up to 1650°C (3002°F) providing that there is no
significant fall in temperature. At temperatures above this the
material will exhibit surface glazing. |
Unique properties of RSLE-501
are:
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A low thermal conductivity.
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An excellent electrical
insulation.
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A high chemical purity.
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An excellent resistance to
corrosion (from molten metal and glass)
RSLE-501 also
exhibits exceptional non-wetting properties when used in contact
with molten aluminum making it useful in numerous molten aluminum
contact applications.
RSLE-501 is 100% organic free and
contains no refractory ceramic fiber. It is readily machined to
precision tolerances with conventional
tooling. |
PROPERTIES &
CHARACTERISTICS
|
Thermal Expansion Coeff. |
|
|
Room Temp. to
800°C(1472°F) |
0.3 x
10-6/°C |
|
Nominal Composition, wt% |
|
|
SiO2 |
99.7 |
|
Other Oxides |
<0.3 |
|
Organics |
0 |
|
Density, g/cc(pcf) |
2.1(90) |
|
Porosity, % |
31 |
|
Color |
White |
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Hardness, Durometer "D" |
87 |
|
Charpy Impact Strength, ft-lb |
0.8 |
|
Compressive Strength**, MPa(psi) |
|
|
at 2.7%
consolidation |
48(7000) |
|
Modulus of Rupture**, MPa(psi) |
30(4300) |
|
Thermal Conductivity** ASTM
C-1113 |
|
W/m°K(BTU/hr ft²
°F/in) |
|
|
200°C(392°F) |
0.55(3.8) |
|
400°C(752°F) |
0.64(4.4) |
|
600°C(1112°F) |
0.61(4.2) |
|
800°C(1472°F) |
0.67(4.6) |
|
1000°C(1832°F) |
0.75(5.2) |
|
Volume Resistivity, ohm-cm |
|
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ASTM D-257-93 |
7.5 x
109 |
|
Dielectric Strength, volts/mil |
|
|
ASTM D-149-95 |
43 |
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Linear Shrinkage, % ‡ |
Length |
Width |
Thickness |
|
24hrs
@800°C(1472°F) |
0.1 |
0.1 |
0 |
|
24hrs @
1100°C(2012°F) |
4.9 |
4.9 |
7.9 |
* 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
Please call ZIRCAR Sales Office
for Current Pricing.
|
ITEM # |
DESCRIPTION |
|
IS01 |
RSLE-501, 2" ID X 2 1/2" OD X 30" L |
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IS02 |
RSLE-501, 3" ID X 3 1/2" OD X 30" L |
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IS03 |
RSLE-501, 4" ID X 4 1/2" OD X 30" L |
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IS04 |
RSLE-501, 5" ID X 5 1/2" OD X 30" L |
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IS05 |
RSLE-501, 6" ID X 6 1/2" OD X 30" L |
|
IS06 |
RSLE-501, 7" ID X 7 1/2" OD X 30"
L |
ZIRCAR REFRACTORY COMPOSITES,
INC.
P.O. BOX 489
FLORIDA, NEW YORK 10921
TEL: 845-651-2200, FAX:
845-651-1515
email: sales@zrci.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.
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