Oratab 94 and Oratab 97 are high purity White Tabular Alumina based castables meant for critical applications in fertiliser, refinery, petrochemical and steel industries. These castables can withstand service temperature upto 1850ºC in carbon monoxide and hydrogen atmospheres. These castables have high bulk density, high mechanical strength at all temperatures, excellent workability, good abrasion resistance, excellent resistance to thermal spalling and good volume stability.

BRANDS Oratab - 94 Oratab - 97     Chemical Analysis Al2 O3 % min. 94 96 Fe2O3 % max. 0.3 0.3 SiO2 % max. 0.3 0.3 CaO % max. 5.0 2.8     Physical Properties    Service Temp ºC 1800 1850    Bulk density, gms / cc 2.80 2.80    Water required for casting % 8.5 - 9.5 8.5 - 9.5    Grain size,mm 5 5     CCS , Kgs / cm2    at 110 oC/24 hrs. 600 400    at 800 o C/3 hrs 450 280    at 1100 o C/3 hrs. 400 250    at 1500 o C/3 hrs. 700 400     Thermal Properties      PLC,%     after heating at 800 oC/3hrs ± 0.2 ± 0.1     after heating at 1100 oC/3hrs ± 0.2 ± 0.2     after heating at 1450 oC/3hrs ± 0.5 ± 0.8   Thermal Conductivity, kcal/m/hr/ oC     at 300 o C/3 hrs. 1.37 1.4     at 500 o C/3 hrs. 1.40 1.43     at 800 o C/3 hrs. 1.42 1.46 Packaging : 25 Kgs Bags Storage Life: 9 Months water proof weather conditions. The above data represents typical average properties and does not constitute a specification.