4all

Ni-Cr (61.4% & 25.7%)-based dental metal-ceramic alloy, Type 4
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4all is a nickel-chromium ceramic alloy. The reduced hardness makes it easy to process and the excellent melting and flow properties enable accurately fitting restorations.

Indications*

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

Technical Data

Composition (%):  Ni 61.4 | Cr 25.7 | Mo 11.0 | Si 1.5 | Mn <1.0, Al <1.0, C <1.0
ISO  22674:2016
ADA Class Base Metal
Type / Color 4 / White
Density (g/cm³) 8.4
Melting Range (Solidus/Liquidus): 1260 - 1350 °C
Elastic Modulus (GPa): 200
  Porcelain Fired        
Vickers Hardness: 235                        
Tensile Strength (MPa): 720                          
0.2% Proof Stress (MPa):  375                         
Elongation (%): 12                             

Advantages

  • Reduced hardness
  • Easy to divest
  • Excellent melting and flow properties
  • Compatible with conventional metal-ceramics (e.g. IPS Style®) and laboratory composites (e.g. SR Nexco®)
  • Tested biocompatibility

Processing Data

Investment Material:  Phosphate-bonded
Preheating / Burn- out Temperature: 800 - 850 °C
Crucible  Ceramic crucible
Casting Temperature: 1405 - 1465 °C
Oxidation  °C/min/Vacuum: 950 / 1 / No
CTE: (25 – 500 °C): 13.9 x 10-6 /K
Recommended Metal Ceramic: IPS Style, IPS InLine One, IPS InLine, IPS InLine PoM, IPS Classic
Recommended Lab Composite: SR Nexco
Laser Welding Wire: Laser Ceramic White

*See TYPE CLASSIFICATION DUE TO PHYSICAL PROPERTIES

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