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Porta SMK 82
Porta SMK 82 is a reduced-gold ceramic alloy with high strength for a wide range of indications. The silver-free composition enables reliable processing with conventional metal-ceramics.
Indications*
- Crowns
- Telescope crowns, conus crowns
- Bridges
- Wide-span bridges
- Cast posts / cores, bars, attachments
- Implant-supported superstructures
- Partial dentures
Technical Data
| Composition (%): | Au 57.5 | Pd 31.4 | In 8.0 | Pt 1.5 | Ga 1.6 | Ru <1.0 |
| ISO | 22674:2016 |
| Type / Color: | 4 / White |
| Density (g/cm³) | 14.3 |
| Melting Range (Solidus/Liquidus): | 1090 - 1240 °C |
| Elastic Modulus (GPa): | 120 |
| Porcelain Fired Hardened | |
| Vickers Hardness: | 250 280 |
| Tensile Strength (MPa): | 700 730 |
| 0.2% Proof Stress (MPa): | 520 570 |
| Elongation (%): | 11 8 |
Advantages
- Ag-free
- Good melting and flow characteristics
- Increased strength
- Wide range of indications
- Compatible with conventional metal-ceramics (e.g. IPS Style)
Processing Data
| Investment Material: | Phosphate-bonded |
| Preheating / Burn- out Temperature: | 900 °C |
| Crucible | Ceramic crucible |
| Casting Temperature: | 1390 °C |
| Oxidation °C/min/Vacuum: | 930 / 5 / No |
| CTE: | (25 – 500 °C): 13.9 x 10-6 /K |
| Recommended Metal Ceramic: | IPS Style, IPS InLine |
| Laser Welding Wire: | Porta P6 |
*See TYPE CLASSIFICATION DUE TO PHYSICAL PROPERTIES