4all is a nickel-chromium ceramic alloy. Its mechanical and physical properties have been coordinated with conventional feldspar ceramics.
Advantages
- Good melting and flow properties
- Easy to divest
- Reduced hardness
- Works with conventional feldspar ceramics
- Certified biocompatibility
Indications
- Single crowns
- Telescope and conus crowns
- Root canal posts
- Short- and long-span bridges
Composition
Ni 61.4
Cr 25.7
Mo 11.0
Si 1.5
Mn < 1.0
Al < 1.0
C < 1.0
Technical data
Type 4
Colour white
Density (g/cm³) 8.4
Melting range (°C) 1260 - 1350
Casting temperature (°C) 1405 - 1465
Modulus of Elasticity (MPa) 200.000
CTE 25 – 500 °C 13.8
CTE 20 – 600 °C 14.1
Elongation (%) 12.0
Vickers hardness 235
0.2% proof stress (MPa) 375