Harmony 3
Harmony 3 is a silver and palladium-based casting alloy. Its high strength and low density make it an economical alternative to base metal alloys.
Indications*
- Onlays, ¾ crowns, crowns
- Telescope crowns, conus crowns
- Bridges
- Wide-span bridges
- Cast posts / cores, bars, attachments
Technical Data
| Composition (%): | Ag 50.8 | Pd 25.9 | Cu 13.8 | Sn 4.5 | Au 3.5 | Zn 1.2 | Mn <1.0, Re <1.0 |
| ISO | 22674:2016 |
| ADA Type | Noble |
| Type / Color | 4 / White |
| Density (g/cm³) | 10.6 |
| Melting Range (Solidus/Liquidus): | 880 - 960 °C |
| Elastic Modulus (GPa): | 106 |
| As Cast Softened Hardened | |
| Vickers Hardness: | 230 200 245 |
| Tensile Strength (MPa): | 610 520 645 |
| 0.2% Proof Stress (MPa): | 430 350 525 |
| Elongation (%): | 10 10 5 |
Advantages
- High strength
- Economical due to low density
- Excellent processing properties
- Excellent polishing properties
- Veneering with laboratory composites (e.g. SR Nexco)
Processing Data
| Investment Material: | Phosphate-bonded / Gypsum-bonded |
| Preheating / Burn- out Temperature: | 650 - 705 °C |
| Crucible | Carbon crucible / Ceramic crucible |
| Casting Temperature: | 1020 - 1050 °C |
| Recommended Lab Composite: | SR Nexco |
| Laser Welding Wire: | Laser C&B White |
*See TYPE CLASSIFICATION DUE TO PHYSICAL PROPERTIES