... Good thermal shock 4,High density Alumina crucible is used for testing laboratory and a variety of industrial analysis. Alumina ceramic ... resistance; 2. Temperature tolerance, at 1600 for long term application, and at 1800 for short term application; 3. Resistant to sudden ... resistance; 2. Temperature tolerance, at 1600 for long term application, and at 1800 for short term application 3. Resistant to ...