Orplid Keramik 3
Type 4
pale yellow / Au 84.0
| Composition: | Au 84.0 / Pt 8.2 / Pd 4.7 / In 2.4 / Ag 0.5 / Cu 0.1 / Ir 0.1 |
| Standard: | DIN EN ISO 22674 and DIN EN ISO 9693 |
| Colour: | pale yellow |
| Melting range °C: | 1200–1085 |
| Soft annealing: | 15 mins at 900 °C / quench in water |
| Hardening: | 15 mina at 600 °C / air |
| Preheating temperature °C: | 850 |
| Casting temperature °C: | 1350 |
| Further heating after melting (secs): | electr.: 90–120 inductive: 5–10 flame: 5–10 |
| Density g/cm3: | 18.1 |
| CTE 25°C–500°C (µm/mK): | 14.3 |
| CTE 25°C–600°C (µm/mK): | 14.5 |
| Soldering before firing: | Orplid Ceramic solder 1050 |
| Soldering after firing: | Orplid solders 760, 735 |
| Vickers hardness (HV 5/30): | w: 110 a: 240 g/b: 190 |
| 0.2% proof stress (MPa): | w: 195 a: 470 g/b: 370/420 |
| Elongation at break (%): | w: 22 a: 13 g/b: 14/14 |
| Spruing: | Following the rules for dental applications (see General Instructions for Use) |
| Investment: | Phosphate-bonded investment materials |
| Preheating: | 850 °C, 30 to 120 mins until end temperature, depending on size of mould |
| Casting: | 1350 °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 1050 |
| Soldering after firing: | Orplid solders 760; Orplid Lot 735 |
| Firing: | For normally expanding ceramic materials |