Orplid H

Type 4
yellow / Au 70.0

Composition: Au 70.0 / Pd 2.0 / Ag 13.0 / Zn 1.5 / Cu 9.5 / Ir 0.1 / Pt 3.9
Standard: DIN EN ISO 22674
Colour: yellow
Melting range °C: 935–895
Soft annealing: 15 mins at 700 °C / quench in water
Hardening: 15 mins bei 400 °C / air
Preheating temperature °C: 700
Casting temperature °C: 1070
Further heating after melting (secs): electr.: 15–20
inductive: 5–8
flame: 5–8
Density g/cm3: 15.4
Solders: Orplid solders 825, 790, 760
Vickers hardness (HV 5/30): w: 170
a: 260
g/b: 250
0.2% proof stress (MPa): w: 345
a: 660
g/b: 565
Elongation at break (%): w: 35
a: 15
g/b: 21
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
Casting: 1070 °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
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