XL-X
XL-X is a gold-reduced, low-density casting alloy for economical use. Its composition gives this alloy a golden yellow colour and allows for a wide range of indications.
Indications*
- Onlays, ¾ crowns, crowns
- Telescope crowns, conus crowns
- Bridges
- Wide-span bridges
- Cast posts / cores, bars, attachments
- Implant-supported superstructures
- Partial dentures
Technical Data
| Composition (%): | Au 62.8 | Pd 3.9| Ag 16.1 | Cu 15.7 | Zn 1.0 | In <1.0 | Ir <1.0 |
| ISO | 22674:2016 |
| ADA Type | High Noble |
| Type / Color | 4 / Yellow |
| Density (g/cm³) | 13.9 |
| Melting Range (Solidus/Liquidus): | 870 - 910 °C |
| Elastic Modulus (GPa): | 105 |
| As Cast Softened Hardened | |
| Vickers Hardness: | 270 165 300 |
| Tensile Strength (MPa): | 790 510 840 |
| 0.2% Proof Stress (MPa): | 690 385 740 |
| Elongation (%): | 13 40 14 |
Advantages
- Golden yellow colour
- Economical use due to low density
- Wide range of indications
- Veneering with laboratory composites (e.g. SR Nexco)
- Tested biocompatibility
Processing Data
| Investment Material: | Phosphate-bonded / Gypsum-bonded |
| Preheating / Burn- out Temperature: | 650 - 760 °C |
| Crucible | Carbon crucible / Ceramic crucible |
| Casting Temperature: | 965 - 1025 °C |
| Recommended Lab Composite: | SR Nexco |
| Laser Welding Wire: | Laser C&B Yellow |
*See TYPE CLASSIFICATION DUE TO PHYSICAL PROPERTIES