THE ARGEN CORPORATION

Alloy Specification Sheet

SUPRACHROME

Color: WHITE Type: 5/PARTIAL 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)
2. After 1 hour increase to 2000(1095)
3. Hold at 2000(1095) for 1 hour.
4. Use spacers under the ring.

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