The 99.8% alumina ceramic is made of white alumina powder with a purity of 99.8%. The powder is mixed with a small amount of oxides such as Fe2O3 and Na2O. After alumina material molding and sintering, it becomes a white solid insoluble in water, odorless and tasteless. , High hardness, easy to absorb moisture but not deliquescence (burned does not absorb moisture). The density of 998 alumina ceramics is between 3.8-3.9g/cm3, its melting point is 2050℃, and its high temperature resistance is 1700℃. The compressive strength is 2550Mpa and the dielectric constant is 9.85. Compared with 95 porcelain, 99 porcelain and 995 porcelain, 998 alumina ceramics have stronger insulation properties Read more