Description
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Type: | High-gold containing metal-ceramic alloy on the gold basis, type 4 (extra hard), acc. DIN EN ISO 22674 |
Colour: | yellow |
Applicable scope: | Inlays, Onlays | ● |
Crowns | ● | |
Small bridges | ● | |
Middle-sized bridges | ● | |
Large-span bridges | ● | |
Milling, cone and attachment works | ● | |
Modeling casting | ● |
Composition: | Au | 85,90 |
(mass fraction in %) | Pt | 11,70 |
Rh | 0,20 | |
Ir | 0,05 | |
Zn | 1,50 | |
Nb | 0,40 | |
Mn | 0,10 | |
In | 0,10 | |
Fe | 0,05 |
Technical specifications: | Density in g/cm³ | 18,9 |
Vickers hardness HV 5/30 | (s) 170 (n) 200 (a-n) 250 | |
Yield strength Rp0,2 in MPa | (s) 440 (n) 490 (a-n) 620 | |
Elongation at break in % | (s) 6 (n) 4 (a-n) 3 | |
Average linear CTE 25 – 500 °C in 10-6 K-1 | 14,4 | |
Average linear CTE 25 – 600 °C in 10-6 K-1 | 14,6 | |
Elastic modulus in GPa | 95 | |
Melting interval in °C | 1040 - 1130 |
Processing: | Preheating temp. of the casting moulds in °C | 850 |
Casting temperature in °C | 1280 | |
Crucibles | Graphite | |
Curing | 450°C/15min |
Suitable solders: | Joints before ceramic firing | AL 1040 PF |
Joints after ceramic firing | AL 750 |
1) Brief description:
s – self-curing, n – after ceramic firing, a-s – curing from s condition
a-n – curing from n condition
2) All information about cured condition is given according to the alloy:
– Oxide firing 10min/ 960°C + 4x4min/ 960°C for yellow conventional bonding alloys
– Oxide firing 10min/ 980°C + 4x4min/ 980°C for white conventional bonding alloys
– Oxide firing 10min/ 800°C + 4x4min/ 800°C for LFC-systems
Corresponding data are true under these conditions only.
3) The ceramic firing should be carried out according to the manufacturer's instructions.
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