Porta Norm

Au (73.8%)-based dental casting/ metal-ceramic alloy, Type 4

Porta Norm

Porta Norm is a high gold, palladium-free universal alloy for a wide range of indications and suitable for veneering with low-fusing special ceramics and laboratory composites.

Indications*

  • Inlays
  • Onlays, 3/4 crowns, crowns
  • Telescope crowns, conus crowns
  • Bridges
  • Wide-span bridges
  • Cast posts / cores, bars, attachments
  • Partial dentures

Technical Data

Composition (%):  Au 73.8 | Ag 9.2 | Pt 9.0 | Cu 4.4 | Zn 2.0 | In 1.5 | Ir <1.0 
ISO  22674:2016
Type / Color 4 / Rich Yellow
Density (g/cm³) 16.5
Melting Range (Solidus/Liquidus): 910 - 990 °C
Elastic Modulus (GPa): 100
  As Cast              Porcelain Fired        Hardened 
Vickers Hardness: 200                      225                            240
Tensile Strength (MPa): 630                      640                            680
0.2% Proof Stress (MPa):  420                      470                            530
Elongation (%): 12                        10                              6

 

Advantages

  • Pd-free
  • Esthetic, golden yellow colour
  • Wide range of indications
  • Compatible with special ceramics and laboratory composites (e.g. SR Nexco)
  • Tested biocompatibility

Processing Data

Investment Material:  Phosphate-bonded / Gypsum-bonded
Preheating / Burn- out Temperature: 700 °C
Crucible  Carbon crucible / Ceramic crucible
Casting Temperature: 1140 °C
Oxidation  °C/min/Vacuum: 800 / 10 / No
CTE: (25 – 500 °C): 16.3 x 10-6 /K
Recommended Lab Composite: SR Nexco
Laser Welding Wire: Porta Norm

*See TYPE CLASSIFICATION DUE TO PHYSICAL PROPERTIES

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