... 500 MPaThermal-expansion coefficient:1.17*10-6/’CFeatures:Aluminum titanate riser tube is the key part of the low ... resistance4,Low thermal-expansion coefficient5,The service life of aluminum titanate riser tube can reach 60 days , can enhance ... the production efficiency and reduce the cost.Applications:Developed aluminum titanate riser tube, thermocouple protection sheaths , crucible and volute have ...