Composition: | Au 38.0 /Ag 36.0 / Pd 17.0 / In 8.9 / Ir 0.1 |
Standard: | DIN EN ISO 22674 und DIN EN ISO 9693 |
Colour: | light yellow |
Melting range °C: | 1090-1000 |
Soft annealing: | 15 mins at 750 ° C / quench in water |
Hardening: | 15 mins at 550 °C / air |
Preheating temperature °C: | 800 |
Casting temperature °C: | 1230 |
Further heating after melting (secs): | electr.: 20–30 inductive: 5–10 flame: 5–10 |
Density g/cm3: | 12.9 |
CTE 25°C–500°C (µm/mK): | 16.3 |
CTE 25°C–600°C (µm/mK): | 16.5 |
Soldering before firing: | Orplid Ceramic solder CF 950 |
Soldering after firing: | Orplid solder CF 720 |
Vickers hardness (HV 5/30): | w: 175 a: 225 g/b: 210/205 |
0.2% proof stress (MPa): | w: 370 a: 520 g/b: 450/520 |
Elongation at break (%): | w: 3.5 a: - g/b: 3/2 |
Spruing: | Following the rules for dental applications (see General Instructions for Use) |
Investment: | Phosphate-bonded investment materials |
Preheating: | 800 °C, 30 to 90 mins until end temperature, depending on size of mould |
Casting: | 1230°C – possibly increase by 20°C–30°C for resistance-heated casting units. Use ceramic crucible (graphite crucibles also possible) |
Finishing: | With carbide burs and/or ceramic-bonded stones. Always grind in one direction only! Sandblasting at a flat angle, using 110–150 µm aluminium oxide. Pressure should not exceed 2 bar |
Cleaning: | Steam jet cleaning or boiling in distilled water |
Oxide firing: | 10 mins at 800°C without vacuum. |
Soldering before firing: | Orplid Ceramic solder CF 950 |
Soldering after firing: | Orplid solder CF 720 |
Firing: | For highly expanding ceramic materials |