Biorplid G2

Type 2
deep yellow / Au 80.5
palladium-free

Composition:Au 80.5 / Pt 1.9 / Ag 9.0 / Zn 0.5 / Cu 8.0 / Ir 0.1
Standard:DIN EN ISO 22674
Colour:deep yellow
Melting range °C:920–955
Soft annealing:15 mins at 750 °C / quench in water
Hardening:30 mins at 500 °C / air
Preheating temperature °C:700
Casting temperature °C:1080
Further heating after melting (secs):electr.: 15–20
inductive: 5–10
flame: 5–10
Density g/cm3:16,1
Solders:Orplid solders 825, 790
Vickers hardness (HV 5/30):w: 110
a: 125
g/b: 135
0.2% proof stress (MPa):w: 240
a: 235
g/b: 240
Elongation at break (%):w: 48
a: 44
g/b: 40
Spruing:Following the rules for dental applications (see General Instructions for Use)
Investment:Phosphate-bonded investment materials (Cehacast P or Cehacast Speed);
gypsum-bonded investment materials
Preheating:700°C, 30 to 120 mins until end temperature, depending on size of mould
Casting:1080 °C, – possibly increase by 20°C–30°C for resistance-heated vacuum
pressure casting. Graphite crucible or open flame with ceramic crucible.
Finishing:With carbide burs and/or ceramic-bonded stones
Cleaning:Ultrasonic cleaning or steam jet cleaning
Soldering:Orplid solders 825, 790
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