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