REFRACTORY SHEET TYPES RS-DA, RS-DM, RS-DD and RS-DR

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GENERAL INFORMATION

ZIRCAR Refractory Sheet Type RS-D is a structural high-alumina product supplied in thin sheet form. It is composed of high purity alumina, reinforced with high-alumina ceramic fibers. Refractory Sheet Type RS-D is available in four types: two types of moldables, and two types of rigid sheets. They are as follows: 

TYPE RS-DA is a plastic highly moldable sheet ideally suited for forming custom geometries.

TYPE RS-DM Sheet is a moldable form of Type RS-D with a higher density than obtainable from Refractory Sheet Type RS-DA. Type RS-DM is ideally suited for fabricating complex shapes from a flat sheet product for use in metal clad electric band and strip heaters.

TYPES RS-DA & RS-DM can be readily cut with a knife or scissors. Joints can be made by wetting both surfaces with water (with a sponge or brush) and promptly pressing the two surfaces together. Thickness greater than 1/8" can be made by laminating two or more sheets together in this manner.

Refractory Sheet Type RS-DD is suitable for die cutting or stamping of gaskets. It can be re-wet, made moldable, and handled like Type RS-DM.

Type RS-DR cuts and handles similar to Type RS-DD except it is slightly less compressible and more rigid. It has been fired so that it will remain rigid even when wet.

TYPE RS-DD is a rigid sheet that can be moistened with water to impart moldability. (see Rigid Materials)

TYPE RS-DR is a rigid pre-fired sheet that has been heat-treated to remove all organic binder and is stable to moisture attack. Refractory Sheet Type RS-DR is suited for use as a setter or barrier for use in the sintering of powder metal parts (see Rigid Materials).

 

SUGGESTED APPLICATIONS

  • ASBESTOS CEMENT BOARD REPLACEMENT

  • OVEN CONSTRUCTION

  • INDUCTION HEATING LINERS AND COIL FIXTURES

  • HIGH TEMPERATURE GASKETING

  • MOLDED SHAPES, TUBES, TRAYS, BOATS, ETC. FOR SINTERING AND HEAT-TREATING

  • HEATING ELEMENT SUPPORT

  • FIREPROOF STRUCTURAL INSULATION

  • NON-FERROUS METAL HANDLING, SPOUTS, TROUGHS, CASTING TIPS

  • BRAZING SEPARATORS AND FIXTURES

  • HOT FURNACE REPAIRS

  • CHARACTERISTICS & PROPERTIES

    Type

    DR

    DD

    DM

    DA

    Form

    Rigid sheet

    Rigid sheet2,3

    Moldable sheet1,3

    Plastic moldable sheet1,3

    Typical Composition, %

           

         Al2O3

    90(dry)

    90(dry)

    90(dry)

    90(dry)

         SiO2

    10(dry)

    10(dry)

    10(dry)

    10(dry)

         Organics

    nil

    nil

    <1

    <1

    Color

    White

    White

    White

    White

    Density (as supplied), pcf

    130

    130

    145

    100

         after drying @ 100C

       

    130

    85

    Thickness shrinkage,

           

        on drying at 100C, %

       

    10

    25

    Moisture, as supplied, %

    2 (4)

    3 (4)

    20

    40

    Maximum Use Temp. * C(F)

    1200 (2192)

    1200 (2192)

    1200 (2192)

    1200 (2192)

    Melting Point, C(F)

    1815 (3300)

    1815 (3300)

    1815 (3300)

    1815 (3300)

    Specific Heat, BTU/lb F

    0.25

    0.25

    0.25

    0.25

    Modulus of Rupture, psi,

        as supplied

    3000

         

        after firing 8 hrs. @ 600C

         

    490

    Compressive Strength, psi

           

        as supplied @ 5%     compression

    10,000

         

        at 8% compression

    20,000

         

        after firing 8 hrs. @ 600C,

           

        10% compression

         

    200

    Firing Shrinkage, %

           

        after 1 hr. @ 1000C

         

    1

        after 4 hrs. @ 1000C

     

    1

       

        after 4 hrs. @ 1200C

     

    4

       

        after 24 hrs. @ 1200C

    5

    5

       

        after 24 hrs. @ 1400C

     

    8

       

        after 24 hrs. @ 1500C

     

    10

       

    Thermal Expansion, in/inC

     

    7x10-6

       

    Softening Point, C

     

    775

       

    Arc Resistance, sec.

    360

         

    Dielectric Strength, VPM

    530

         

    Volume Resistivity, ohm-cm

     

    5x107

       

    Thermal Conductivity, BTU/hr F/in  at mean temp. = 600C(estimated)

      

    4.5

       

    3.8

    1 Becomes rigid upon drying.
    2 Can be made moldable with addition of 10-20 wt% H2O.
    3 Can be made permanently rigid by heating to 300C(570F).
    4 Depending on humidity.
    * Maximum Use Temperature is dependent on variables such as stresses, both thermal and mechanical, and the chemical environment that the sheet product experiences. Contact ZIRCAR Sales Office for more information about the performance of these products in your application.

    AVAILABILITY

    Item # Description
    JS01 RS-DA, 18" X 24" X .020
    JS02 RS-DA, 18" X 24" X .040
    JS03 RS-DA, 18" X 24" X .080
    JS04 RS-DA, 18" X 24" X .120
    JS05 RS-DA, 36" X 48" X .020
    JS06 RS-DA, 36" X 48" X .040
    JS07 RS-DA, 36" X 48" X .080
    JS08 RS-DA, 36" X 48" X .120
    JS20 RS-DM, 18" X 24" X .020
    JS21 RS-DM, 18" X 24" X .040
    JS22 RS-DM, 18" X 24" X .080
    JS23 RS-DM, 18" X 24" X .120
    JS24 RS-DM, 36" X 48" X .020
    JS25 RS-DM, 36" X 48" X .040
    JS26 RS-DM, 36" X 48" X .080
    JS27 RS-DM, 36" X 48" X .120
    JS50 RS-DD, 18" X 24" X .020
    JS51 RS-DD, 18" X 24" X .040
    JS52 RS-DD, 18" X 24" X .080
    JS53 RS-DD, 18" X 24" X .120
    JS54 RS-DD, 36" X 48" X .020
    JS55 RS-DD, 36" X 48" X .040
    JS56 RS-DD, 36" X 48" X .080
    JS57 RS-DD, 36" X 48" X .120
    JS70 RS-DR, 18" X 24" X .020
    JS71 RS-DR, 18" X 24" X .040
    JS72 RS-DR, 18" X 24" X .080
    JS73 RS-DR, 18" X 24" X .120
    JS74 RS-DR, 36" X 48" X .020
    JS75 RS-DR, 36" X 48" X .040
    JS76 RS-DR, 36" X 48" X .080
    JS77 RS-DR, 36" X 48" X .120

    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.

    CUSTOM BOARDS AND SHAPES

  • 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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    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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