The basic components : Co ; Cr ; Mo.
Nicel free cobalt-chromium alloys is a cast material produced by alloying of commercially pure metals, namely cobalt, chromium, molybdenum and others in vacuum induction furnaces. The alloy is characterized with required level of technological, physical and chemical and mechanical properties in accordance with requirements of the international standards ISO 6993 "Stomatology ceramic for dental appliance". It has high corrosion resistance and meets to toxicology and sanitary requirements for stomatology materials.
Heightened fluidity of the alloys makes it possible to cast thin-walled parts having thickness up to 0.2 mm. The products made from this alloy are well workable by abrasive tools and polishing means. Alloys properties ensure a reasonably high strength of metal-ceramic bonds on application of porcelain masses, i.e. it may be used for metal-ceramic dentures producing.
The main properties of alloy:
|Density||- 8,3 g/cm-3|
|Recommended casting temperature||- 1500-1550 *Ñ|
|Tensile strenght||- no less than 750 MPa|
|Yield strenght||- no less than 550 MPa|
|Elongation||- no less than 4%|
|Brinell hardness||- no less than 2500 MPa|