CeHa LIGHT CLASSIC
Type 4
white / Au 0.0
copper-free
| Composition: | Pd 61.5 / Ag 24.5 / Sn 9.9 / Zn 2.0 / In 2.0 / Ru 0.1 |
| Standard: | DIN EN ISO 22674 and DIN EN ISO 9693 |
| Colour: | white |
| Melting range °C: | 1260–1180 |
| Soft annealing: | 15 mins at 900 °C / quench in water |
| Hardening: | 15 mins at 600 °C / air |
| Preheating temperature °C: | 850 |
| Casting temperature °C: | 1430°C (ceramic crucible!) |
| Further heating after melting (secs): | electr.: 120–180 inductive: 10–15 flame: 10–15 |
| Density g/cm3: | 11.3 |
| CTE 25°C–500°C (µm/mK): | 14.2 |
| CTE 25°C–600°C (µm/mK): | 14.5 |
| Soldering before firing: | Cehadentor Ceramic solder 1110 |
| Soldering after firing: | Orplid solder CF 720, Orplid solder CF 860 |
| Vickers hardness (HV 5/30): | w: 260 a: 320 g/b: 310 |
| 0.2% proof stress (MPa): | w: 583 a: 725 g/b: 620/600 |
| Elongation at break (%): | w: 19 a: 12 g/b: 13/18 |
| 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: | 1430°C – possibly increase by 10°C–20°C for resistance-heated casting units. Ceramic crucible |
| Finishing: | With carbide burs and/or ceramic-bonded stones. Always grind in one direction only! Sandblasting at a flat angle, using 110–125 µm aluminium oxide. Pressure should not exceed 2 ba |
| Cleaning: | Steam jet cleaning or boiling in distilled water |
| Oxide firing: | 10 mins at 950°C without vacuum. Afterwards, always clean in a preheated acid bath, e.g. Neacid, (for 10 mins) or sandblast with 50–125 µm aluminium oxide. Pressure should not exceed 2 bar. Clean thoroughly with a steam jet |
| Soldering before firing: | Cehadentor Ceramic solder 1110 |
| Soldering after firing: | Orplid solder CF 720, Orplid solder CF 860 |
| Firing: | For normally expanding ceramic materials |