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DENTREX DENTAL ALLOY CHART
Multi-Purpose Alloys For Low Fusing Porcelain & Pressing

Alloy Type
        
Precious Metal Content %
Melting Range
Casting Temp.
Density
Application
Type
Color
Au
Pt
Pd
Ag
°F
°C
°F
°C
g/cm3
ESTHETIC 73
5, 6, 10
IV
YELLOW
73
1.6
5.8
16
1795-1960
980-1070
2280
1250
15.7
ESTHETIC 55
5, 6, 10
IV
YELLOW
55
11.65
3
23
1725-1975
940-1080
2245
1230
14.7
ESTHETIC 40
5, 6, 10
IV
WHITE
-
-
39.9
52
1958-2084
1070-1140
2282
1250
10.6


Alloy Type
Proof Stress (PSI)
Tensile Strength (PSI)
Elongation %
Vickers Hardness (DPH)
Laser Wire
PRE
POST
Soft
Hard
Soft
Hard
Soft
Hard
Soft
Hard
      
      
   
ESTHETIC 73
81,200
95,600
108,700
104,400
3
5
260
130
LW573
760
720
ESTHETIC 55
66,700
58,000
88,500
82,600
4
6
-
180
LW555
760
720
ESTHETIC 40
86,300
41,300
114,500
81,200
6
18
270
160
LW540
600
720


Alloy Type
Recommended Investment
Burn-out Temp. & 1 hr hold time
+10 min. for each add. ring
Heat Treatment for 5 min. & bench cool
   
°F
°C
°F
°C
ESTHETIC 73
Phosphate Bonded
1300
704
1200-1470
650-800
ESTHETIC 55
Phosphate Bonded
1300
704
1200-1470
650-800
ESTHETIC 40
Phosphate Bonded
1450
788
1200-1472
649-800


Alloy Type
Degassing in Air or Otherwise Specified
Co-Eff. of Thermal Expansion
  
25-500 °C
25-600 °C
ESTHETIC 73
2 min. hold Blast-off oxide
16.3
16.8
ESTHETIC 55
2 min. hold Blast-off oxide
16.3
16.6
ESTHETIC 40
3 min. hold
16.6
16.7


APPLICATION:
1. Single-surface soft inlays.
2. Two-surface medium hard inlays M.O.D., and 3/4 crowns.
3. Full crowns, 3/4 crowns, M.O.D., bridge abutments and pontics, cat post, inlays, short and long-span bridges.
4. Heavy stress restorations: short and long-span bridges, implant over-structures, and cast partils.
5. Porcelain application: single unites, and short-span bridges.
6. Porcelain application: single-unites, hort, and long-span bridges.
7. Porcelain application: recommended for imlant over-structures.
8. Especially compatible with Vita porcelain.
9. Non-greening porcelains or non-greening liquids are recommended.
10. Recommended for high expansion, low fusing porcelains.
11. Porcelain application: very thin margins and Maryland bridges; designed for North American porcelains, ie. Ceramco II, Crystar.
12. Porcelain application: very thing margins and Maryland bridges; designed for European and Vita-type porcelains.
13. Single anterior units with fuyll porcelain coverage.



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