| REFRACTORY SHEET TYPES RS-99-45 and
RS-99-60 |
|
GENERAL INFORMATION
 |
ZRCI Refractory Sheet Type
RS-99-60 and RS-99-45 are comprised of
99% alumina. These "All-Alumina" materials are strong, uniform, rigid,
refractory structure composed of alpha alumina fibers and high purity inorganic
binders. Type RS-99-60 and RS-99-45 have a high purity alumina bond making them
well suited for use in high vacuum and reducing environments where silica cannot
be tolerated, such as power metal and MIM furnaces with H2 atmospheres. They
also have high electrical resistivity at elevated temperatures allowing them to
be used in direct contact with resistance heating elements. They exhibite
superior hot strength and dimensional stability to 1650°C (3000°F).
RS-99-60 has a density of 60 lbs/ft³ (1
gm/cc) and RS-99-45 has a density of 45 lbs/ft³ (.72 gm/cc)
ZRCI Refractory Sheet low density fiber
reinforced ceramic composites are available as boards, cylinders and custom
shapes. They have a fine open pore structure, high porosity and low thermal
conductivity. |
|
These materials are fabricated as true composite
laminates. They can be constructed into near net complex shapes. They can also
be machined to tight exacting tolerances with ordinary shop tools and equipment.
Their superior machinability and dimensional stability plus low heat capacity
make them ideal for use as setters, supports and process fixtures in both
continuous and batch firing furnaces.
They contain no organic binders and will not smoke or
produce odors when heated. They show excellent resistance to chemical attack and
are not affected by oil or water. They are, however, affected by hydrofluoric
acid, phosphorous acid and strong alkalis.
|
SUGGESTED APPLICATIONS
Primary thermal insulation in low mass furnaces
and thermal process systems operating to 1650°C (3002°F)
Thermal insulation, supports and process fixtures
in Hot Isostatic Presses (HIP) furnaces and other thermal process systems
operating to 1650°C (3002°F).
High temperature setters, supports and process
fixtures.
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 and low temperature gasketing.
Non-ferrous metal handling as pouring spouts,
troughs, and casting tips launders, distribution boxes, pouring spouts, hot tops
and others involving molten metal contact.
Electrical insulation in high temperature systems
operating to 1550°C (2822°F).
CHARACTERISTICS &
PROPERTIES
| TYPE |
RS-99-60 |
RS-99-45 |
| Nominal Composition, wt% |
|
|
|
Al2O3 |
99 |
99 |
|
SiO2 |
1 |
1 |
|
Organic content |
0 |
0 |
| Density, gm/cc(pcf) |
1.0(60) |
0.72(45) |
| Porosity, % |
65 |
85 |
| Max. Use Temp. *, °C(°F) |
1650(3002) |
1650(3002) |
| Modulus of Rupture**, MPa(psi) |
5.00(730) |
2.07 (300) |
| Compressive Strength**, MPa (psi) at 10%
compression |
4.00(580) |
1.31 (190) |
| Thermal Conductivity, |
|
|
| W/m°K(BTU/hr. ft² °F/in) |
|
|
|
427°C(800°F) |
0.27 (2.00) |
0.12 (0.85) |
|
900°C(1652°F) |
0.32 (2.40) |
0.16 (1.10) |
|
1200°C(2192°F) |
0.44 (3.20) |
0.22 (1.50) |
|
1650°C(3992°F) |
0.52
(3.70) |
0.29 (2.00) |
| Thermal Expansion, |
7.0 x10-6/°C |
7.0 x10-6/°C |
|
RT-400°C(752°F) |
(4 x10-6/°F) |
(4 x10-6/°F) |
| Linear Shrinkage‡, % after 4 hrs. at 1200°C(2192°F) |
1 |
1 |
* 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 |
| DS60 |
RS-99-60, 12" X 12" X
1/4" |
| DS61 |
RS-99-60, 24" X 24" X
1/4" |
| DS62 |
RS-99-60, 12" X 12" X
1/2" |
| DS63 |
RS-99-60, 24" X 24" X
1/2" |
| DS64 |
RS-99-60, 12" X 12" X
3/4" |
| DS65 |
RS-99-60, 24" X 24" X
3/4" |
| DS66 |
RS-99-60, 12" X 12" X
1" |
| DS67 |
RS-99-60, 24" X 24" X
1" |
| DS70 |
RS-99-60, 1"ID X
2"OD X 12"L |
| DS71 |
RS-99-60, 1"ID X
2"OD X 24"L |
| DS72 |
RS-99-60, 2"ID X
3"OD X 12"L |
| DS73 |
RS-99-60, 2"ID X
3"OD X 24"L |
| DS74 |
RS-99-60, 3"ID X
4"OD X 12"L |
| DS75 |
RS-99-60, 3"ID X
4"OD X 24"L |
| DS76 |
RS-99-60, 5"ID X
6"OD X 12"L |
| DS77 |
RS-99-60, 5"ID X
6"OD X 24"L |
| DS78 |
RS-99-60, 6"ID X
7"OD X 12"L |
| DS79 |
RS-99-60, 6"ID X
7"OD X 24"L |
| Item # |
Description |
| DS80 |
RS-99-45, 12" X 12" X
1/4" |
| DS81 |
RS-99-45, 24" X 24" X
1/4" |
| DS82 |
RS-99-45, 12" X 12" X
1/2" |
| DS83 |
RS-99-45, 24" X 24" X
1/2" |
| DS84 |
RS-99-45, 12' X 12" X
3/4" |
| DS85 |
RS-99-45, 24" X 24" X
3/4" |
| DS86 |
RS-99-45, 12" X 12" X
1" |
| DS87 |
RS-99-45, 24" X 24" X
1" |
| DS90 |
RS-99-45, 1"ID X
2"OD X 12"L |
| DS91 |
RS-99-45, 1"ID X
2"OD X 24"L |
| DS92 |
RS-99-45, 2"ID X
3"OD X 12"L |
| DS93 |
RS-99-45, 2"ID X
3"OD X 24"L |
| DS94 |
RS-99-45, 3"ID X
4"OD X 12"L |
| DS95 |
RS-99-45, 3"ID X
4"OD X 24"L |
| DS96 |
RS-99-45, 5"ID X
6"OD X 12"L |
| DS97 |
RS-99-45, 5"ID X
6"OD X 24"L |
| DS98 |
RS-99-45, 6"ID X
7"OD X 12"L |
| DS99 |
RS-99-45, 6"ID X
7"OD X 24"L |
CUSTOM BOARDS AND SHAPES:
Custom sizes are available on request. Boards can
be made as small as .5" x .5" x 1/32" and as large as 24" x 48" x 1". Cylinders
can be made as small as .5" inside diameter, .56" outside diameter and .5"
length and as large as 30" inside diameter, 32" outside diameter and 72 "
length.
Our manufacturing process and machining
capabilities allow a wide variety of shapes to be made. Please contact us with
your special requirements.
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