X-L

Au (61.7%)-based dental casting alloy, Type 4

X-L

X-L is a gold-reduced casting alloy with a golden yellow colour. The coordinated material properties allow successful clinical use in various different areas of indication.

Indications*

  • Inlays
  • Onlays, ¾ crowns, crowns
  • Telescope crowns, conus crowns
  • Bridges
  • Wide-span bridges
  • Cast posts / cores, bars, attachments

Technical Data

Composition (%):  Au 61.7 | Pd 3.0 | Ag 25.2 | Cu 9.6 | In <1.0, Ir <1.0
ISO  22674:2016
ADA Type High Noble
Type / Color 4 / Yellow
Density (g/cm³) 14.0
Melting Range (Solidus/Liquidus): 890 - 950 °C
Elastic Modulus (GPa): 105
  As Cast              Softened        Hardened 
Vickers Hardness: 150                      125                  240
Tensile Strength (MPa): 500                      410                  660
0.2% Proof Stress (MPa):  390                      270                  515
Elongation (%): 26                        35                    18
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