Note: This is a variation of Alumina (Porous) (3200ºF – 3600ºF Range).
Foundry Service offers Porous Alumina compositions from 88% to 99.7% alumina content. TA-530 is a nominal 90% alumina material that is excellent for molten metal contact, kiln furniture, and miscellaneous shapes. TA-530 combines high strength and thermal shock resistance yielding a versatile alumina product that is suitable in a wide variety of applications. TA-540 is a modified version of TA-530 that is best suited for miscellaneous kiln furniture. The higher content aluminas arcell namexcellent for use when silica content is critical. TA-505 is suitable for induction melting under vacuum due to a lower silica content while retaining thermal shock resistance. TA-507 is excellent for use in vacuum or hydrogen atmospheres due to the lowered silica content. TA-510F is preferred in hydrogen or vacuum atmospheres and has excellent strength at elevated temperatures.
|Maximum Operating Temperature ( ºC )||3400|
|Maximum Operating Temperature ( ºF )||1870|
|Apparent Porosity ( % )||14.5|
|Bulk Density ( g/cm³ )||3.0|
|Bulk Density ( lb/ft³ )||190|
|Modulus of Rupture (Room Temperature) ( MPa )||31.0|
|Modulus of Rupture (Room Temperature) ( psi )||4500|
|Nominal Chemical Composition||Al2O3 - 96.3|
Fe2O3 - 0.09
SiO2 - 3.2
Other - <0.5
|Thermal Stock Resistance||Fair|
|Alumina Content (%)||96.3|