 General Ordering Info
Alumina Tubes & Rods
99.8% Alumina Rods
Alumina Plates & Disks
Bolts, Nuts & Washers
Standoff Ceramic Insulators
Fishspine Beads
 Machinable Ceramics
Machinable Ceramics
Bisque Alumina is an alumina body that has been fired to approximately 2475° F. It can be used in its bisque form or in a fully fired state. When fired to approximately 3100° F, it becomes a dense, hard material, and both the electrical and mechanical properties increase. When fired, bisque alumina shrinks between 15% and 18%. In its bisque form this material can be readily machined using conventional tooling.
Unfired Grade "A" Lava is a mined stone (chemically known as hydrous aluminum silicate). It can be used in a fired or unfired state. When fired to approximately 2000° F, it becomes a hard material with improved electrical, and mechanical properties. Lava is readily machined by the average job shop using standard techniques. If the part requires firing, it is necessary that cross sections be limited to a maximum of 1/2", unless stress relief procedures are incorporated to avoid cracking.
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