Orplid PF

Type 4
deep yellow / Au 78.0
palladium-free

Composition: Au 78.0 / Cu 4.0 / Ag 11.0 / Zn 2.0 / Pt 4.9 / Ir 0.1
Standard: DIN EN ISO 22674
Colour: deep yellow
Melting range °C: 970–920
Soft annealing: 15 mins at 750 °C / quench in water
Hardening: 15 mins at 500 °C / air
Preheating temperature°C: 700
Casting temperature °C: 1100
Further heating after melting(secs): electr.: 15–20
inductive: 5–8
flame: 5–8
Density g/cm3: 16.6
Solders: Orplid solders 825, 790, 760
Vickers hardness (HV 5/30): w: 140
a: 200
g/b: 195
0.2% proof stress (MPa): w: 285
a: 400
g/b: 360
Elongation at break (%): w: 24
a: 19
g/b: 25
Spruing: Following the rules for dental applications (see General Instructions for Use
Investment: Phosphate-bonded investment materials (Cehacast P or Cehacast Speed)
Preheating: 700°C, 30 to 120 mins until end temperature, depending on size of mould
Finishing: 1100 °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, 760