Properties	Category Crown & Bridge Nobility High Noble Type Type III Melting Range 1670°F to 1760°F Density 15.2 g/cm3 Grain Size 24 microns Hardness 125 HV Tensile Elongation 50% Tensile Yield Strength 39,500 psi Ultimate Tensile Strength 62,000 psi
	Chemistry	Gold 75% Silver 11% Copper 10% Palladium 3% Iridium less than 1% Zinc less than 1% Indium less than 1%
	Spruing	Sprue to the bulkiest section. Sprue diameter should be equal to the thickness of the bulkiest section. Sprues longer than 3/8" should have a reservoir 1/16" from pattern. Patterns should be no farther than 1/4" from top of investment. Use direct method for single units and small castings. Use indirect method for bridges and larger castings.
	Investment	Gypsum or phosphate bonded investment.
	Burnout	900°F (480°C) to 1200°F (650°C)
	Melting / Casting	No extra winds of the casting arm are required (2-3 winds typical). Multi-or single-orifice torch: 5 psi fuel and 10 psi oxygen. The alloy will fully puddle and form a ball before it is ready to cast. DO NOT OVERHEAT. Cast at around 1850°F (1010°C).
	Finishing and Polishing	Use standard techniques.
	Soldering	Recommended Solder: 650 Solder Flux-Brown Fluoride