RS-100: Fiber Reinforced Structural Alumina Composite
Description
Refractory Sheet Type RS-100 is available in 48 x 48 in. boards as a standard size. RS-100 is a fiber-reinforced structural Alumina composite with useful thermal, structural, and electrical insulating properties. These boards are also useful in the transport of molten non-ferrous metals to 2,300⁰F.
RS-100 has compressive and flexural strength in the range of high-temperature reinforced plastics such as G-10 laminates but retains its strength and utility far exceeding the maximum use of these materials. The mechanical properties of RS-100 exceed those of all calcium-silicate materials and asbestos cement materials over all temperature ranges. RS-100 makes an excellent replacement for rigid asbestos-containing products and can be employed at much higher temperatures.RS-100 is 100% inorganic, non-flammable, and contains no asbestos.
This material's high Alumina content makes RS-100 highly resistant to many environments, including non-ferrous metals, and it undergoes no out-gassing upon heating. RS-100 is not brittle and has high-impact properties. RS-100 may be cut and machined with standard tooling.
Specs
- Excellent Electrical Properties
- High Strength
- High Alumina Content
- Chemical Resistant
- Fully Machinable
- Non RCF
| Typical Composition, % | |
|---|---|
| Al2O3 | 75 |
| SiO2 | 16 |
| Other Metal Oxides, % | 9 |
| Organic Content , % | 0 |
| Density, gm/cm3 (lb/ft3) | 2.1 (130) |
| Porosity, % | 35 |
| Color | White to Tan |
| Flammability | Nil |
| Max Use Temperature*,C (F) | 1260 (2300) |
| Melting Point, C (F) | 1500 (2732) |
| Modulus of Rupture**, MPa (psi) | |
| as Received | 55 (8000) |
| after 4 hrs at 600°C (1112°F) | 36 (5200) |
| Compressive Strength**, MPa (psi) | |
| at 2% Compression | 69 (10,000) |
| Specific Heat, J/kg K (BTU/lb°F) | |
| at 600°C (1100°F) | 1172 (0.28) |
| Thermal Expansion, | |
| RT- 400°C (752°F) | 6.0 x 10-6/C (3.3 x10-6/F) |
| Linear Shrinkage^, % | |
| after 4 hrs. at 1,200°C (2,200°F) | 1 – 2 |
| Moisture Content, % at 105°C (220°F) | 0 – 2 |
| Loss on Ignition, % at 982°C (1,800°F) | 1 – 2 |
| Hardness, Durometer “D” | 90 |
| Electrical Properties, | |
| Volume Resistivity, ohm-cm | 7.2 x 1011 |
| Surface Resistance, ohms | 2.3 x 1011 |
| Dielectric Strength, Volts/mil | 71 |
| Breakdown Voltage, kV | |
| (1/8-in. thick piece) | 7.3 |
| Arc Resistance, sec. | >420 |
| Thermal Conductivity**, | |
| W/m K (BTU/ ft2 °F/in) | |
| 200°C (392°F) | 0.634 (4.40) |
| 400°C (752°F) | 0.636 (4.41) |
| 600°C (1,112°F) | 0.638 (4.42) |
| 800°C (1,472°F) | 0.638 (4.44) |
| 1000°C (1,832°F) | 0.643 (4.46) |
| 1200°C (2,192°F) | 0.648 (4.50) |