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Porta Maximum
Porta Maximum is a high gold, copper-free universal alloy. The constituents in this alloy allow for a wide range of indications, especially for the milling and double crown techniques.
Indications*
- Inlays
- Onlays, 3/4 crowns, crowns
- Telescope crowns, conus crowns
- Bridges
- Wide-span bridges
- Cast posts / cores, bars, attachments
- Partial dentures
Technical Data
| Composition (%): | Au 70.0 | Ag 10.0 | Pt 10.0 | In 5.0 | Pd 2.5 | Zn 2.0 | Rh <1.0 |
| ISO | 22674:2016 |
| Type / Color | 4 / Rich Yellow |
| Density (g/cm³) | 16.2 |
| Melting Range (Solidus/Liquidus): | 910 - 1060 °C |
| Elastic Modulus (GPa): | 98 |
| As Cast Porcelain Fired Hardened | |
| Vickers Hardness: | 180 190 210 |
| Tensile Strength (MPa): | 560 580 600 |
| 0.2% Proof Stress (MPa): | 380 410 460 |
| Elongation (%): | 10 8 7 |
Advantages
- Cu-free
- Wide range of indications
- Good processing and polishing properties
- Compatible with special ceramics
- Certified biocompatibility
Processing Data
| Investment Material: | Phosphate-bonded / Gypsum-bonded |
| Preheating / Burn- out Temperature: | 700 °C |
| Crucible | Carbon crucible / Ceramic crucible |
| Casting Temperature: | 1200 °C |
| Oxidation °C/min/Vacuum: | 800 / 10 / No |
| CTE: | (25 – 500 °C): 16.2 x 10-6 /K |
| Laser Welding Wire: | Portadur IN |
*See TYPE CLASSIFICATION DUE TO PHYSICAL PROPERTIES