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Porta Norm
Porta Norm is a high gold, palladium-free universal alloy for a wide range of indications and suitable for veneering with low-fusing special ceramics and laboratory composites
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 73.8 | Ag 9.2 | Pt 9.0 | Cu 4.4 | Zn 2.0 | In 1.5 | Ir <1.0 |
| ISO | 22674:2016 |
| Type / Color | 4 / Rich Yellow |
| Density (g/cm³) | 16.5 |
| Melting Range (Solidus/Liquidus): | 910 - 990 °C |
| Elastic Modulus (GPa): | 100 |
| As Cast Porcelain Fired Hardened | |
| Vickers Hardness: | 200 225 240 |
| Tensile Strength (MPa): | 630 640 680 |
| 0.2% Proof Stress (MPa): | 420 470 530 |
| Elongation (%): | 12 10 6 |
Advantages
- Pd-free
- Esthetic, golden yellow colour
- Wide range of indications
- Compatible with special ceramics and laboratory composites (e.g. SR Nexco)
- Certified biocompatibility
Processing Data
| Investment Material: | Phosphate-bonded / Gypsum-bonded |
| Preheating / Burn- out Temperature: | 700 °C |
| Crucible | Carbon crucible / Ceramic crucible |
| Casting Temperature: | 1140 °C |
| Oxidation °C/min/Vacuum: | 800 / 10 / No |
| CTE: | (25 – 500 °C): 16.3 x 10-6 /K |
| Recommended Lab Composite: | SR Nexco |
| Laser Welding Wire: | Porta Norm |
*See TYPE CLASSIFICATION DUE TO PHYSICAL PROPERTIES