RS-A Moldable | ZIRCAR Refractory Composites, Inc.

General Info

ZRCI’s Refractory Sheet Type RS-A Moldable is a tough ceramic fiber reinforced insulation which contains no asbestos. Developed as an asbestos board replacement for induction coil liners and molten metal transport, Refractory Sheet Type RS-A Moldable is ideally suited for a wide range of high temperature, high thermal shock applications.

Refractory Sheet Type RS-A Moldable is a wet blanket that can be easily formed into a wide variety of simple and complex shapes. Drying results in a strong rigid shape that can be rewet to restore the original moldability. Baking irreversibly removes the moldability, leaving Refractory Sheet Type RS-A Moldable unaffected by moisture. Refractory Sheet Type RS-A Moldable can be frozen and thawed repeatedly with no loss in moldability or other properties.

Refractory Sheet Type RS-A Moldable can be dried rapidly, either with a torch or by applying directly to a hot furnace, to make quick repairs of cracks in, or to replace missing, refractories.

Properties

Typical Composition, %
Al₂0₃	90 – 92
SiO₂	6 – 10
Density, gm/cm³ (lb/ft³)	1.5 – 1.7 (95 – 105)
Porosity, %	40
Color	White
Organic Content, %	0
Solids Content, % by weight	65
Modulus of Rupture, MPA (psi)
at room temperature	3.45 (500)
16 hrs at 1000°C (1832°F)	5.5 (800)
Compressive Strength, MPa (psi)
at 10% Compression	69 (10,000)
Maximum use Temperature, C (F)	1450 (2642)
Specific Heat, J/kg K(Btu/lboF)	1047 (0.25)
Linear Shrinkage^, %
16 hrs at 1200°C (2192°F)	4
Drying Shrinkage, %	<1^, 16-20**
Thermal Conductivity^, Estimated
W/m K(Btu/hr ft² °F/in)	0.65 (4.5)

* 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 Moldable is a tough ceramic fiber insulation reinforced with a needled blanket. It can be molded into an unlimited variety of simple and complex shapes for temperatures up to 1450°C (2642°F). Type RS-A Moldable was developed as a hazardous material replacement for induction coil liners and molten metal transport and is ideally suited for any high temperature, high thermal shock applications.

Flexible and Strong
Fully Machinable
Non RCF

Instructions

SUGGESTED APPLICATIONS

Type RS-A is used as induction furnace components such as channel melter components, coil liners, coreless induction components, splash and coil shields.
Type RS-A is use in non-ferrous metal handling and transport as spouts, troughs, and casting tips.
Type RS-A is used for 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.
Type RS-A is the ideal as high temperature gasketing material.

FORMING INSTRUCTIONS

To Make A Flat Board:

Open plastic covering and unroll the desired amount of Refractory Sheet Type RS-A Moldable.
Cut to size with a knife.
Dry on a rigid glass, wood or metal plate separated by a piece of plastic, cloth or paper.
Prevent warping by either restraining or flipping over to allow drying from both sides.

To Make A Cylinder

Select a smooth mandrel of the desired size and shape.
Wrap mandrel with a plastic sheet.
Cut enough Refractory Sheet Type RS-A Moldable off roll to make desired shape.
Cut a bevel on the leading edge of the Refractory Sheet Type A Moldable with a knife.
Wrap Refractory Sheet Type RS-A Moldable around mandrel.
Work joints together with a tool, such as a screw driver or knife to achieve as much fiber-to-fiber interlocking as possible.

To Make A Complex Shapes

Make a plaster mold with sufficient draft to allow for the removal of the formed Refractory Sheet Type RS-A Moldable.
Form Refractory Sheet Type RS-A Moldable onto or into mold by hand.
Dry until firm, then remove from mold and complete drying.
Large complex shapes can be made on any sort of removable form by joining sheets together with a screwdriver or knife to achieve as much fiber to fiber interlocking as possible.

For pre-made Boards, Cylinders and Complex Shapes made from Type RS-A please refer to Refractory Sheet Type RS-A

SUGGESTED APPLICATIONS

Type RS-A is used as induction furnace components such as channel melter components, coil liners, coreless induction components, splash and coil shields.
Type RS-A is use in non-ferrous metal handling and transport as spouts, troughs, and casting tips.
Type RS-A is used for 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.
Type RS-A is the ideal as high temperature gasketing material.

PDF

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SDS (in PDF format)

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Other Information

AVAILABILITY

Please call, fax or e-mail for pricing and availability.

Item #	Description
KS11	RS-A MOLDABLE, 24″ X 72″ X 1/2″
KS12	RS-A MOLDABLE, 48″ X 96″ X 1/2″
KS13	RS-A MOLDABLE, 24″ X 36″ X 1/2″

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