THE ARGEN CORPORATION
Alloy Specification Sheet
Standard
BS EN ISO 22674
SUPRACHROME
| Color: | WHITE | Type: | 5 | ADA Classification: | Cobalt BASE (CPB) | PGM: | 0% |
Metal Content %
| Mn | Co | Si | C | Mo | Cr |
| x | 63.6 | x | x | 6 | 28.5 |
'x' denotes a content of less than one percent.
Thermal Properties
Melting
Range |
Casting
Temperature |
2370-2450 ºF |
2750 ºF |
1300-1370 ºC |
1510 ºC |
Mechanical Properties
Vickers Hardness (VHN) |
Yield Strength (0.2% Offset) |
Modulus of Elasticity (GPa) |
Elongation ( %) |
Density (g/cm³) |
||||
Soft |
Hard |
Soft |
Hard |
200 |
Soft |
Hard |
8.3 |
|
--- |
410 |
--- psi |
87,000 psi |
--- |
9 |
|||
--- MPa |
600 MPa |
|||||||
* Hard is the as cast condition
|
PROCESS
|
INSTRUCTIONS
FOR USE
|
| Waxing | Commercially made plastic patterns are available for most of the framework. |
| Spruing | Sprue through a hole centrally located in the mold. Location and amount of sprues are at discretion of lab technician. It is advisable to join together tips of the clasp to help prevent incomplete casting. |
| Investing | After wax model is completed, invest the ring with partial investment following manufacturer's recommended instructions. If you are using a rapid-fire investment, follow the manufacturer's instructions. |
| Burnout |
Recommended cycle: 1. Start-up at 750-850 °F (400-455 °C) Note: The process above is recommended. Each investment is unique, please review investment manufacture instructions.
|
| Casting | Use induction or torch casting. When using the oxy-acetylene torch, equipped with no. 4 or no. 6 tip, adjust the flame with inner core between ½ inch and 1 inch (12mm - 24mm) long. Do not hold torch too close to the alloy. Cast when the metal slumps. Do not overheat the alloy. Do not pull the torch away from the metal when casting. After casting, allow the ring to bench cool. |
| Finishing | Sandblast casting thoroughly to remove all evidence of investment
particles and oxide surface. Finish with appropriate stones and Electro-polish as per manufacturer's recommended instructions. |
Pre-Soldering |
Use: WELDING RODS
|
Post-Soldering |
Use: ELECTRO WELD
|
16-Apr-2009