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Herastar AU - for C & B
Universal casting and bonding alloy (reduced precious metal dental casting alloy acc. to EN ISO 22674 and EN ISO 9693-1) light yellow
Benefits
- Entire crown and bridge indication range
- Copper-free
- Light yellow colour
- Suitable with special veneering ceramics with high CTE and low firing temperature
- Easy to mill
- Low density
- Excellent temperatur strength
Indications
- Inlays, Onlays
- Crowns
- Bridges
- Milling-, Con- and Attachment works
- Partial denture
Specifications
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Composition (Content in mass %) |
Au 33.0 | Ag 43.0 Pd 14.8 | In 8.0 Pt 1.0 | Ir 0.1 Nb 0.1 |
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| CTE (25 – 500 °C) | 17.0 μm/m*K | |||||||||||||
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Recommended solders |
Herastar AU Lot 1, Herastar AU Lot 2 |
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Laser welding wire |
– | |||||||||||||
| Delivery form |
1 g ingots, rand. weights |
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| Art. Code | 1208 1000 | |||||||||||||
Specification legend
Explanation of abbreviations and numbering:
x = content < 0.1 mass%
Indications:
1 Inlays, cervical filling
2 MOD Inlays
3 Crowns
4 Bridges
5 Milling technique
6 Partial dentures
10 Cast posts
14 Can be veneered with high expansion, low-fusing ceramics
15 Implant restorations
16 Electroformed double crown technique (primary crowns)
Abbreviations:
w = after soft annealing and quenching
k = ceramic bonding alloy: condition after ceramic firing
v = after hardening
s = self-hardening after slow cooling in the mould
A = A stable framework design with reinforced connections with a cross section of 8 - 10 mm² is required for long span bridges and superstructures. Additionally, the frameworks need to be hardened.
B = Depending on the copper content, in some cases discolouration ofdouble crowns may result after short period of wearing. Discolouration, however, is technically and physiologically harmless.
C = In exceptional cases these alloys can also be used for traditional telescopic crowns with parallel walls and for the bar casting technique provided that cross-sections for crown walls, approximal areas, bars and laser welded joints are particularly thick and the alloy is hardened subsequently. No indication for conical crowns and sheardistributors.
Please observe instructions for use included during delivery when processing of the alloy!