Search Jensen
[ Alloys ] [ Endurance ] [ Technical Guide]


  Properties
Category PFM
Nobility High Noble
Melting Range 2005°F to 2185°F
Coef. of Thermal Expansion
   from 25°C to 500°C
   from 25°C to 600°C
14.1x10-6K-1
14.4x10-6K-1
Density 18.2 g/cm3
Grain Size 9 microns
Hardness 215 HV
Tensile Elongation 7%
Tensile Yield Strength 74,500 psi
Ultimate Tensile Strength 90,000 psi
Modulus of Elasticity 12.8x106 psi
Chemistry
Gold 84.5% Platinum 8%
Palladium 5% Indium 2%
Iron less than 1% Rhenium less than 1%

Waxing / Spruing

 .3mm for single units and .5mm for bridge work.
Investment
 A phosphate-bonded investment with or without carbon.
Burnout
 1300°F (705°C)
Melting / Casting
No extra winds of the casting arm are required (2-3 winds typical)
Multi-orifice torch: 10 psi fuel and 20 psi oxygen.
Cast at around 2285°F (1255°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. Proceed with normal opaque technique.
Polishing
 Use low speeds and light pressure. We recommend the use of tin oxide and/or high shine rubber wheels for easy final polishing.
Pre-solder
 Recommended solder: Spirit, LX
Flux-Brown Fluoride
Post-solder
 Recommended solder: 615
Flux-Brown Fluoride