Biorplid G1
Type 4
yellow / Au 72.0
palladium-free
| Composition: | Au 72.0 / Zn 0.8 / Ag 13.7 / Cu 9.8 / Ir 0.1 / Pt 3.6 |
| Standard: | DIN EN ISO 22674 |
| Colour: | yellow |
| Melting range °C: | 945–895 |
| Soft annealing: | 15 mins at 750 °C/ quench in water |
| Hardening: | 30 mins at 300 °C/ air |
| Preheating temperature °C: | 700 |
| Casting temperature °C: | 1095 |
| Further heating after melting: (secs): | elektr.: 15–20 inductive: 5–10 flame: 5–10 |
| Density g/cm3: | 15.4 |
| Solders: | Orplid solders 825, 790, 760 |
| Vickers hardness (HV 5/30): | w: 150 a: 260 g/b: 220 |
| 0.2% proof stress (MPa): | w: 260 a: 525 g/b: 520 |
| Elongation at break (%): | w: 43 a: 19 g/b: 18 |
| Spruing: | Following the rules for dental applications (see General Instructions for Use) |
| Investment: | Phosphate-bonded investment materials |
| Preheating: | 700 °C, 30 to 120 mins until end temperature, depending on size of mould |
| Casting: | 1095 °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 |