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Category

partial dentures
partial dentures
partial dentures
partial dentures
partial dentures

Cobalt Chrome alloy dental material for restoration of removable framework and partial dentures

Cobalt chrome framework
Delivery:
FOB
minimum order:
1 kilogram
Supply Ability:
20000kilogram / Month
Country of Origin:
Changsha
Stock Time:
7Day
Cobalt Chrome alloy for restoration of removable framework and partial dentures
Quantity:
Contact Now
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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

image001

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

image003

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.

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