General Information
ZIRCAR Ceramics’ Alumina Type SALI-2 is a high-quality material composed of polycrystalline alumina fibers in a mullite binder matrix. It is designed for high-temperature applications up to 1800°C (3192°F), offering excellent thermal insulation, hot strength, and dimensional stability. SALI-2 is resistant to chemical attacks, except from hydrofluoric acid, phosphorous acid, and strong alkalis. It is pre-fired, contains no organic binders, and does not emit smoke or odors when heated.

Characteristics & Properties
- Color: White
- Composition: 80% Al2O3, 20% SiO2
- Density: 0.51 g/cc (32 pcf)
- Open Porosity: 84%
- Maximum Use Temperature: Continuous 1800°C (3292°F), Intermittent 1830°C (3326°F)
- Melting Point: 1870°C (3392°F)
- Flexural Strength: 2.14 MPa (310 psi)
- Compressive Strength: 1.04 MPa (150 psi) at 10% Compression
- Specific Heat: 1047 J/kg°K (0.25 BTU/lb °F)
- Thermal Conductivity: Varies with temperature, e.g., 0.25 W/m K at 400°C

Suggested Applications
- Primary thermal insulation in furnaces up to 1820°C (3308°F)
- Backup insulation for systems exceeding 2000°C (3632°F)
- High-temperature setters, supports, and process fixtures
- Electrical insulation in systems up to 1800°C (3272°F)

Availability
Standard boards are available in various sizes and can be ordered online. Custom boards and shapes can be manufactured with tight tolerances. Surface treatments and coatings are also available.

Additional Information
The data provided is intended to assist in determining the suitability of SALI-2 for specific applications. It is a nominal representation and should not be used for preparing specifications.