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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.
RSLE-501
also exhibits exceptional non-wetting properties when used
in contact with molten aluminum making it useful in
numerous molten aluminum contact applications.
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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 is 100% organic free and contains
no refractory ceramic fiber. It is readily machined to
precision tolerances with conventional tooling.
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PROPERTIES & CHARACTERISTICS
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Thermal Expansion Coeff.
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Room Temp. to 800°C(1472°F)
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0.3 x 10-6/°C
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Nominal Composition, wt%
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SiO2
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99.7
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Other Oxides
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<0.3
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Organics
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0
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Density, g/cc(pcf)
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2.1(90)
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Porosity, %
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31
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Color
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White
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Hardness, Durometer "D"
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87
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Charpy Impact Strength, ft-lb
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0.8
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Compressive Strength**, MPa(psi)
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at 2.7% consolidation
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48(7000)
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Modulus of Rupture**, MPa(psi)
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30(4300)
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Thermal Conductivity** ASTM C-1113
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W/m°K(BTU/hr ft² °F/in)
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200°C(392°F)
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0.55(3.8)
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400°C(752°F)
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0.64(4.4)
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600°C(1112°F)
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0.61(4.2)
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800°C(1472°F)
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0.67(4.6)
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1000°C(1832°F)
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0.75(5.2)
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Volume Resistivity, ohm-cm
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ASTM D-257-93
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7.5 x 109
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Dielectric Strength, volts/mil
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ASTM D-149-95
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43
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Linear Shrinkage, % ‡
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Length
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Width
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Thickness
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24hrs @800°C(1472°F)
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0.1
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0.1
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0
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24hrs @ 1100°C(2012°F)
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4.9
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4.9
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7.9
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* 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
| Item # |
Description |
| IS01 |
RSLE-501 Cylinder, 2" ID X 2 1/2"
OD X 30" L |
| IS02 |
RSLE-501 Cylinder, 3" ID X 3 1/2"
OD X 30" L |
| IS03 |
RSLE-501 Cylinder, 4" ID X 5" OD
X 30" L |
| IS04 |
RSLE-501 Cylinder, 5" ID X 6" OD
X 30" L |
| IS05 |
RSLE-501 Cylinder, 6" ID X 7" OD
X 30" L |
| IS06 |
RSLE-501 Cylinder, 7" ID X 8" OD
X 30" L |
PRICES ARE SUBJECT TO CHANGE
WITHOUT NOTIFICATION AND ARE SUBJECT TO ZIRCAR REFRACTORY COMPOSITES, INC.
TERMS AND CONDITIONS. ALL PRICES ARE F.O.B. FLORIDA, NY AND ARE IN U.S.
DOLLARS
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.
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of ZIRCAR Refractory Composites, Inc.
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