FDA Cleared, last investigation 02-08-2024

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Alloys
Gold Crown & Bridge Noble
SM20 – 20% Au, Type IV
Gold Crown and Bridge High Noble
SM55 – 55% Au, Type IV
Ceramic – PFM Noble
Phoenix PXN 76% PD,Type IV For Porcelain Application
Ceramic – PFM High Noble
SMOG 77% Au, Type IV 
For Porcelain Application
Titanium Grade 23
90% Ti, 6% V, 4% Others,Highly Biocompatible Type IV
Non-Precious Cobalt Chrome
66% Co, 27% Mo, 6% Others,Unique 255 Vick. Hardness
Alloys
Gold Crown & Bridge Noble
SM20 – 20% Au, Type IV
Gold Crown and Bridge High Noble
SM55 – 55% Au, Type IV
Ceramic – PFM Noble
Phoenix PXN 76% PD,Type IV For Porcelain Application
Ceramic – PFM High Noble
SMOG 77% Au, Type IV 
For Porcelain Application
Titanium Grade 23
90% Ti, 6% V, 4% Others,Highly Biocompatible Type IV
Non-Precious Cobalt Chrome
66% Co, 27% Mo, 6% Others,Unique 255 Vick. Hardness

ALLOYS

Crown & Bridge Noble

SM20 - 20% Au, Noble Crown and Bridge Alloy, Type IV

SM20 is an economic golden crown and bridge alloy from Strategy Milling. It is suitable for full-cast crowns and bridges, inlays, and onlays.

Advantages
  • Affordable, yellow crown and bridge alloy
  • Rich yellow color
  • Economical due to low density
  • Brilliant high gloss achieved with ease by polishing
Indications
  • Onlays
  • 3/4 crowns
  • Crowns
  • Telescope and conus crowns
  • Root canal post and cores
  • Short- and long-span bridges
  • Inlays and onlays
Composition
Ag 40.75
Au 20.0
Pd 14.0
In 11.0
Cu 10.75
Sn 2.0
Zn 0.5, Pd 1.0, Ru 1.0
Technical data
Type
Noble
Color
Yellow
Density (g/cm³)
10.8
Melting range (°C)
750 – 840 C
Casting temperature (°C)
960 – 1020 C
Modulus of Elasticity (MPa)
90
Elongation (%) – As cast
5
Vickers hardness – As cast
195
0.2% proof stress (MPa) – As cast
195
Tensile Strength (MPa) – As cast
570

Polishing Recommendations

This is a Type IV alloy which is hard.
Begin with a Dedeco White Flexie Classic Knife-Edge Abrasive Wheel.
Follow with a new or newer Robinson Soft Bristle Brush using medium pressure and  Fabulustre Polishing Compound, the type for final buffing of Au, Ag, Pt, Al, Ni, Fe, and Cu, (two tone gold colored label).
Short, worn bristle brushes are not great, in my opinion. Follow that up with a soft felt wheel, light on pressure and light on polish.
This combination works very well at leaving a smooth, high shine.
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