Category
Cobalt Chrome alloy dental material for restoration of removable framework and partial dentures
Vsmile Cobalt Chromium Metal Alloys
Vsmile Cobalt Chromium Metal Alloy is a high-quality non-noble metal alloy used to make PFM (porcelain-fused-to-metal) crown and bridge. It has been a trustworthy alloy universally accepted by the whole world for 15 years.
Cobalt Alloy without Berrylium and Nickel (Co-1)
Composition |
| |
Cobalt | 60% | |
Chrome | 26% | |
Molybdenum | 4% | |
Wolfram | 10% | |
Others | 2% | |
Technical Specification | ||
Melting range (degree) | 1360 +/- 50 | |
Yield strength (Mpa) | 530 | |
Tensile strength (Mpa) | 880 | |
Elongation (%) | 3 | |
Rockwell Hardness (HRB) | 30 | |
Coefficient of liner expansion (25-500degree) | 14.7 | |
Cobalt Alloy for Restoration of Removable Framework and Partial Denture (Co-3)
Composition |
| |
Cobalt | 50% | |
Chrome | 25% | |
Molybdenum | 5% | |
Ferrum | 15% | |
Nickel | 4% | |
Others | 2% | |
Technical Specification | ||
Melting range (degree) | 1350 +/- 50 | |
Yield strength (Mpa) | 620 | |
Tensile Strength | 810 | |
Elongation (%) | 3 | |
Rockwell Hardness (HRB) | 30 | |
Coefficient of liner expansion (25-500degree) | 14.7 | |
Advantage:
High resistance to corrosion;
Biological compatibility assessed and certified by inspection organization;
Stable physical properties;
Strong bonding force between metal and porcelain;
Low expansion coefficient, stable, safe and reliable;
Bubbles and cracks in porcelain are greatly reduced through manufacturing in high vacuum environment.
Instructions for Use:
Wax Pattern
The thickness of the wax pattern shall be at least 0.4 mm and the thickness of the casting after sanding and sand blast shall be at least 0.3 mm. In case of dental crown or long bridge that contains high percentage of metal, a metal reservoir can be installed after proof by experiment.
Embedment
Compatibility is available to the market generally accepted phosphate Co-Cr porcelain embedment. Application shall be put under strict control according to the instructions provided by the embedding material manufacturers.
Casting
This alloy can be cast with flame or through HF process. Porcelain crucible is selected. Do not overheat during fusion. It's better not to wait till the film is broken so as to avoid shrinkage cavities, bubbles, etc. It is suggested that only new metal be used to keep accuracy and nice outlook of the casting. For recycled application, only 50% of used metal can be added.
After the cast ring is opened
To cut off the sprue according to the standard, sand the casting and then carry out sand blast.
Cleaning and Oxidation
Clean the sand blasted casting with ultrasonic wave or steam and then carry out oxidation to the casting in the porcelain furnace in complete vacuum at 980ºC. Time of holding is nor necessary for single crown and small bridge. If the bridge is too long, please hold for 2 minutes to avoid deformation.
Hot Tags: cobalt chrome alloy, China, suppliers, manufacturers, factory, customized, wholesale, buy, price, cheap, free sample, Nickel Chrome Alloy, pmma dental bridge, Cobalt Chrome Alloy, dental pmma puck
Send Message