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[ Alloys ] [ JP-I ] [ Technical Guide]


  Properties
Category PFM
Nobility High Noble
Melting Range 2075°F to 2220°F
Coef. of Thermal Expansion
   from 25°C to 500°C
   from 25°C to 600°C
13.8x10-6K-1
14.1x10-6K-1
Density 14 g/cm3
Grain Size 38 microns
Hardness 240 HV
Tensile Elongation 25%
Tensile Yield Strength 73,000 psi
Ultimate Tensile Strength 110,000 psi
Chemistry
Gold 51.5% Palladium 38.5%
Indium 8.5% Gallium 1.5%
Ruthenium less than 1%    

Waxing / Spruing

 .3mm for single units and .5mm for bridge work.
Investment
 A phosphate-bonded investment with or without carbon.
Burnout
 1500°F (815°C)
Melting / Casting
One extra wind of the casting arm is required (3-4 winds typical)
Multi-orifice torch: 10 psi fuel and 20 psi oxygen.
Cast at around 2300°F (1260°C)
Finishing
 Finish with carbides or aluminum oxide stones. Blast porcelain receiving surface with non-recycled aluminum oxide. Clean in ultrasonic for 10 minutes.
Conditioning
 Oxidize from 1200°F (650°C) to 1850°F (1010°C) in air. Hold for 5 minutes at 1850 in air. Proceed with normal opaque technique.
Pre-solder
 Recommended solder: Spirit, LX
Flux-Brown Fluoride
Post-solder
 Recommended solder: 1400
Flux-Brown Fluoride