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Auropal 1

auropal_1magnifying glass

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

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: 
Tempering, °C/min: 400 / 15 
Soft annealing, ºC/min: 600 / 15

Auropal 1magnifying glass

Composition
Au 63.4
Ag 19.5
Cu 12.0
Pd 3.0
Zn 1.5
Pt < 1.0
Ir < 1.0

The recommended solders for this alloy
Solder befor firing: Auropal Lot M-1
Solder after firing: Auropal Lot W-2
Laser-welding wires: Portadur P2