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Porta Aurium 2

porta_aurium2magnifying glass

Low-gold casting/veneering alloy in compliance with DIN EN ISO 9693 +
DIN EN ISO 22674. Type 4, yellow, copper-free.

Matching solders

Investment material: Phosphate / plaster-bonded
Casting crucible: Graphite / ceramic

Post melting time in seconds

  • Resistance heating: 30 - 60
  • HF induction: 5 - 15
  • Propane / oxygen flame: 5 - 15

Oxidation without vacuum, ºC/min: 800 / 15 
Tempering, °C/min: 550 / 15 
Soft annealing, ºC/min: -

Porta Aurium2magnifying glass

Composition
Au 57.1
Ag 30.5
Pd 9.0
In 3.0
Ru < 1.0

The recommended solders for this alloy
Solder befor firing: Porta IP Lot V2
Solder after firing: Porta Optimum Lot 710
Laser-welding wires: Portadur IN