Dental Metal Alloy Cobalt-Chromium (PFM)

Technology Parameter and Performance:

A. Physical and Chemistry Performance:

a. Fracture elongation>=3%          

b. Coefficient of expansion: 14.3*10-6/C  (20~500C)

c. Density: 8.5 g/cm3               
d. Break off/ craze original intension>=25 Mpa

e. Tensile strength:>=250N/mm2     

f. Alloy liquidus or solidus curve temperature:1350~1400C

g. Modulus of elasticity: 200 GPa          

h. Corrosion resistance 7d above the release of ions is less than total average accumulation 0.1 mg/cm2

 i. Alloy composition(%): Cobalt 60~64;

                                      Chrome 24~28;

                                      Molybdenum5~7;

                                      Tungsten4~6;

          Gallium<3.5;

          Silicon<1.5;

          Others<2.0

B. The alloy model is rotundity and hexagon.