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BioPortadur

bioportadurmagnifying glass

High-gold casting alloy in compliance with DIN EN ISO 9693 +
DIN EN ISO 22674. Type 4, yellow, palladium-free, 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 °C/min: – 
Tempering, °C/min: 500 / 15 
Soft annealing, °C/min: 700 / 15

BioPortadurmagnifying glass

Composition
Au 85.3
Pt 10.0
Zn 3.0
In 1.0
Rh < 1.0

The recommended solders for this alloy
First solder: Porta OP Lot M-1 
Second solder: Porta OP Lot W-2
Laser-welding wires: Portadur IN