Ceramic Material Physical Index:

      Volume density: ＞2.7 g/cm³                                      Intensity of resisting fold: 1400 Kgf/cm²

      Swell modulus: ＜8×10^-6mm/℃                           Intervene current normal number: ＜7.5

      Secant of depletion: ＜8×10^-4                                   Resistivity: ＞10¹²Ω^.cm

      Intensity of breakdown: 20 KV^.mm

 

Chemistry Composition(weight percent):

      SiO_2: 57.5～58.5                Al₂O_3:3.7～4.7                          Fe₂O_3: ＜0.15           R₂O: ＜0.3

      BaO: 7.5～8.5                   MgO: 27.5～29.5                       Scorching hot impurity: ＜0.8         

 

Metal Lug Chemical Element (%)

      Cu: remainder            P: 0.1~0.25                Fe: ≤0.05                Zn:  /              Sn:  6～7