REFRACTORY SHEET TYPES RS-99-45 and RS-99-60

(PDF VERSION)

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 1650C (3000F).

RS-99-60 has a density of 60 lbs/ft (1 gm/cc) and RS-99-45 has a density of 45 lbs/ft (.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

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/mK(BTU/hr. ft F/in)    
      427C(800F) 0.27 (2.00) 0.12 (0.85)
      900C(1652F) 0.32 (2.40) 0.16 (1.10)
      1200C(2192F) 0.44 (3.20) 0.22 (1.50)
      1650C(3992F) 0.52 (3.70)  0.29 (2.00)
Thermal Expansion, 7.0 x10-6/C  7.0 x10-6/C 
      RT-400C(752F) (4 x10-6/F) (4 x10-6/F)
Linear Shrinkage, % after 4 hrs. at 1200C(2192F) 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.

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}