Inbest Ceramic

Product Introduction > Tube, Rod and Labware

Tube, Rod and Labware

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• A998 Labware is made of 99.8% pure recrystallized aluminum oxide. Highly resistant to chemical attack, this alumina ceramic ware is especially useful to chemists, metallurgists and others involed in high-temperature work demanding contamination-free results.
  A998 ware is highly refractory, meant for use in reducing and oxidizing atmospheres. It is inert in hydrogen and carbonaceous atmospheres and offers high resistance to alkaline and other fluxes.

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• Maximum Use Temperature(No Load) : 1750℃
  Thermal-Expansion Coeffcient(25℃ -1000℃) : 8.0x10^-3/℃
  Specific Gravity : 3.9(typical)
  Permeability : Gas-tight
  Water Absorption : None
  

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• Chemical Tests

  Hot conentrated sulfuric acid, 100°C,
  4 hrs: weight loss~6x10~4%
  Hot 10% sodium hydroxide, 100°C
  4 hrs: weight loss~9x10~4%
  Hot 50% phosphoric acid, 90°C,
  4 hrs: weight loss~0.6%