CeHa LIGHT LFC

Type 4**
white / Au 0.0 
copper-free

Composition:Ag 53.0 / Pd 37.9 / Zn 5.0 / Sn 2.0 /
In 2.0 / Ir 0.1
Standard:DIN EN ISO 22674 und DIN EN ISO 9693
Colour:white
Melting range °C:1100-1060
Soft annealing:15 mins at 850 ° C / quench in water
Hardening:15 mins at 500 °C / air
Preheating temperature °C:700
Casting temperature °C:1280
Further heating after melting (secs):electr.: 90–120
inductive: 10–15
flame: 10–15
Density g/cm3:10,9
CTE 25°C–500°C (µm/mK):16,1
CTE 25°C–600°C (µm/mK):16,7
Soldering before firing:Orplid Ceramic solder C 970
Soldering after firing:Orplid solder CF 720
Vickers hardness (HV 5/30):w: 165
a: 220
g/b: 190
0.2% proof stress (MPa):w: 335
a: 490
g/b: 365/335
Elongation at break (%):w: 10
a: 10
g/b: 15/16
Spruing:Following the rules for dental applications (see General Instructions for Use)
Investment:Phosphate-bonded investment materials (Cehacast P or Cehacast Speed)
Preheating:700 °C, 30 to 120 mins until end temperature, depending on size of mould
Casting:1280°C – possibly increase by 10°C–20°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 110–125 µm aluminium oxide. Pressure should not exceed 2 bar
Cleaning:Steam jet cleaning or boiling in distilled water
Oxide firing:3 mins at 800°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:Orplid Ceramic solder C 970
Soldering after firing:Orplid solder CF 720
Firing:For normally expanding ceramic materials (e.g. CeHa WHITE® LF)
Our website only uses technical cookies that ensure the functionality of the website. More information.
OK