RS-A Boards and Shapes

  Brooke Hamling   Sep 07, 2018     Comments Off on RS-A Boards and Shapes
RS-A1, RS-A2, RS-A3 Boards

General Info

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 100°C(212°F). These products can be remoistened to impart moldablity. Type RS-A2 is fired for 3 hour at 600°C(1112°F) 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.

 

Properties

Typical Composition, %  
          Al2O3 90
          SiO2 10
Color White
Organic Content, % 0
Specific Heat, BTU/lb°F (J/kg°K) 0.25(1047)
Maximum Use Temp* C(F) 1450(2642)
Thermal Conductivity,** (estimate)  
     W/m°K(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 1200°C(2192°F)

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.

Composition

Refractory Sheet Type RS-A is a tough ceramic fiber reinforced composite material available in standard boards and custom shapes made to customer specifications. It is ideal for applications up to 1450°C (2642°F). Type RS-A products are available in 3 varieties: Type RS-A1 is dried to constant weight at 100°C(212°F). These products can be remoistened to impart moldablity. Type RS-A2 is fired for 3 hour at 600°C(1112°F) and fully cured. Type RS-A3 is fired, hardened  with ZIRCAR AL-Hard at 5% pickup, and re fired. They are substantially higher in density than other ceramic fiber based moldable derived products.

  • Flexible and Strong 
  • Fully Machinable
  • Non RCF

 

Instructions

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.

PDF

Download the RS-A Boards and Shapes PDF File

SDS (in PDF format)

Download 1st PDF File

Other Information

AVAILABILITY

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

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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.

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.

  • ZIRCAR Refractory Composites, Inc.
    P.O. Box 489
    Florida, NY, 10921 USA
    Phone: (845) 651-2200
    Fax: (845) 651-1515
    email: sales@zrci.com