alumina ceramic beads

详情

alumina ceramic beads is made by special way,the density is higher,made by special material of *5% alumina,in this way,the heat treatment is better,precise Mold control so that the tolerance is strict for this kind alumina ceramics

Technical data
Density 3.***3.7g/cm3
Alumina content *5%
Hardness(Mohs) 9
Rockwell hardness(HRA) over *5
Compression strength : ***0 MPa 
Safety working temperatures : over ***0
Thermal Conductivity   *3 W/mK
Flexural Strength **0 Mpa

Properties: High density, good apprearance and high alumina content, excellent thermal condictivity and heat transfer,  excellent insulating property  and higer surface finish and good unifomity ,resistance against thermal shock and mechanical abuse.

Application:This special sintered alumina ceramic beads as components of ceramic pad and channel heaters can be used for pre and post-heaters welding applications,Welding process, stress-relieving, pre-heating & post heating, ship-building, other resistance-heating environment

All flexible ceramic pad heaters are constructed of *0/*0 Nickel/Chrome multi-strand wire, insulated with interlocking sintered pink alumina ceramic beads, nickel cold tail wire, and two Male Camlocks.Also we can make alumina ceramic according to your requirement.