Cehadent Plus

Type 4
white / Au 38,0 

Composition: Au 38.0 / Ag 15.5 / Ga 1.0 / Pd 37.0 / In 8.5
Standard: DIN EN ISO 22674 and DIN EN ISO 9693
Colour: white
Melting range °C: 1275 - 1160
Soft annealing: 15 mins at 1100 °C / quench in water
Hardening: 15 mins at 600 °C / air
Preheating temperature °C: 850
Casting temperature °C: 1425
Further heating after melting (secs): elektr.: 120–180
inductive: 10–15
flame: 10–15
Density g/cm3: 13,3
CTE 25°C-500°C (µm/mK): 14,2
CTE 25°C-600°C (µm/mK): 14,3
Soldering before firing: Orplid Keramik solder 1110
Soldering before firing: Orplid solder CF 720
Vickers hardness (HV 5/30): w: 220
a: 295
g/b: 255/250
0,2% proof stress (MPa): w: 360
a: 590
g/b: 430/435
Elongation at break (%): w: 10
a: 12
g/b: 10/13
Spruing: Following the rules for dental applications (see General Instructions for Use)
Investment: Phosphate-bonded investment materials (Cehacast Speed)
Preheating: 850 °C, 30 to 120 mins until end temperature, depending on size of mould
Casting: 1425 °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. Always grind in one direction only! Sandblasting at a flat angle, using 50–125 µm aluminium oxide. Pressure should not exceed 2 bar
Cleaning: Steam jet cleaning or boiling in distilled water
Oxide firing: 5 mins at 940°C without vacuum
Soldering before firing: Orplid Ceramic solder 1110
Soldering after firing: Orplid solder CF 720
Firing: For normally expanding ceramic materials (e.g. CeHa WHITE® Classic)
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