[ Alloys ]
[ Stability ]
[ Technical Guide]
Properties
Category
PFM
Nobility
Noble
Melting Range
2050°F to 2210°F
Coef. of Thermal Expansion
from 25°C to 500°C
from 25°C to 600°C
13.5x10
-6
K
-1
13.9x10
-6
K
-1
Density
10.7 g/cm
3
Grain Size
9 microns
Hardness
300 HV
Tensile Elongation
20%
Tensile Yield Strength
103,230 psi
Ultimate Tensile Strength
128,620 psi
Chemistry
Palladium
77%
Copper
10%
Gallium
7%
Indium
4%
Gold
2%
Ruthenium
less than 1%
Zinc
less than 1%
Waxing / Spruing
.3mm for single units and .5mm for bridge work.
Investment
Use a phosphate-bonded carbon free investment.
Burnout
1450°F (785°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)under vacuum. Bench cool, and proceed with normal opaque technique.
Pre-solder
Recommended solder:
Spirit, LX
Flux-Brown Fluoride
Post-solder
Recommended solder:
1400
Flux-Brown Fluoride
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