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  DuraCast  
  DURACAST VIBRATORY CASTABLE
  DuraCast is a castable alumina–zirconia-silica refractory which exhibits low thermal conductivity and excellent abrasion resistance. Most refractory materials that demonstrate good thermal conductivity properties have reduced service life due to problems caused by thermal cycling and their inability to resist abrasion.
  Refractories also experience obstacles due to long storage periods or moisture exposure. Due
to the AZS grain structure DuraCast, its low thermal conductivity and high abrasion resistance characteristics are elevated to a level unattainable in other heavyweight castable refractories containing alumina grains. DuraCast is also stable under normal storage conditions.
It is far the most effective alternative to reducing abrasion and wear in high temperature environments. Better resistance to abrasive wear means considerable savings and improved productivity.
   
 
PHYSICAL CHARACTERISTICS
(samples fired to 816°C/1500°F)
Characteristic
Typical
Field & Mock-Up Results
Modulus of Rupture
2,500 PSI
3,500 PSI
Cold Crushing
9,500 PSI
12,000 PSI
Bulk Density
2.79 g/cm³ (174 lbs/ft³)
2.79 g/cm³ (174 lbs/ft³)
Erosion Loss (ASTM C-704)
6.0 cm³
4.0 cm³
Linear Change
-0.2 %
-0.1%
Apparent (open) Porosity
25%
23%
Thermal Conductivity
8.5 BTU in/hr/ft²/°F
8.5 BTU in/hr/ft²/°F
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