REFRACTORY SHEET TYPE RS-A1, RS-A2 and RS-A3

(PDF VERSION)

GENERAL INFORMATION

ZIRCAR Refractory Sheet Type RS-A is a tough ceramic fiber reinforced composite material available in standard boards and custom shapes made to customer specifications.

These products are made from Type RS-A Moldable. Type RS-A was developed as an asbestos board replacement for induction coil liners and molten metal transport, and contains no asbestos. Refractory Sheet Type RS-A is ideally suited for a wide range of high temperature, high thermal shock applications.

Type RS-A contains no organic binders and will produce no smoke or odors when heated.

Type RS-A products are available in 3 varieties: Type RS-A1 is dried to constant weight at 100C(212F). These products can be remoistened to impart moldablity. Type RS-A2 is fired for 3 hour at 600C(1112F) and fully cured. Type RS-A3 is fired, hardened  with ZRCI AL-Hard at 5% pickup, and re fired. They are substantially higher in density than other ceramic fiber based moldable derived products.

 

SUGGESTED APPLICATIONS
  • Induction Furnace components such as: channel melter components, coil liners, coreless induction components, splash and coil shields.

  • Non-ferrous metal handling and transport as: spouts, troughs, and casting tips.

  • Brazing separators and fixtures for jewelry-making as well as other industrial applications. The high Al2O3 content makes it resistant to sticking in many environments including molten metals.

  • Ideal as high temperature gasketing material.

CHARACTERISTICS & PROPERTIES

Typical Composition, %  
          Al2O3 90
          SiO2 10
Color White
Organic Content, % 0
Specific Heat, BTU/lbF (J/kgK) 0.25(1047)
Maximum Use Temp* C(F) 1450(2642)
Thermal Conductivity,** (estimate)  
     W/mK(BTU/hr ft2 F/in)  0.65(4.5)

TYPE

Type A1

Type A2

Type A3

Density, gm/cm3(lb/ft3)

1.6(100)

1.6(100)

1.7(105)

Porosity, %

40

40

38

Modulus of Rupture,** MPa(psi)  

at room temperature

3.4(500)

3.9(560)

9.1(1330)

Compressive Strength,** MPa(psi) at 10% deflection

6.9(1000)

9.7(1400)

17.2(2500)

Hardness, Durometer "D"

50

55

70

Pullout Strength

     

(lbs on #10 sheet metal screws)

30

50

90

Moisture Content, %

10

10

2

Linear Shrinkage,16 hrs soak at 1200C(2192F)

4

0

0

* 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

RS-A Shapes are typically made to customer specification. Please contact ZRCI Sales Office for complete information.

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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.

Copyrights and trademarks are the property of  ZIRCAR Refractory Composites, Inc.
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