Argenco 4
Reduced Gold Alloys for Crown and Bridge
| Color | YELLOW |
| Type | 4 |
| ADA Class | HIGH NOBLE (HN) |
|
Application
   
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| Processing | |
|---|---|
| Investment | Gypsum or Phosphate Bonded |
| Crucible | Graphite / Ceramic |
| Degassing Temp C | 650-995 |
| Oxidation Procedure |
| Solder & Laser Wires | |
|---|---|
| PreSolder | --- |
| PostSolder | 750Y, 830Y |
| Laser Wire |
| Physical Properties | |
|---|---|
| VHN After Firing | |
| VHN Soft | 160 |
| VHN Hard | 290 |
| Proof Stress Soft MPa | 359 |
| Proof Stress Hard MPa | 860 |
| Tensile Strength Soft MPa | 490 |
| Tensile Strength Hard MPa | 880 |
| Elongation Soft | 34 |
| Elongation Hard | 2 |
| Elastic Modulus GPa | 100 |
| Composition | |
|---|---|
| Silver (Ag) | 21.8 |
| Gold (Au) | 59.6 |
| Copper (Cu) | 13.25 |
| Palladium (Pd) | 4.4 |
| Zinc (Zn) | 0.3 |
| Iridium (Ir) | 0.05 |
| Platinum (Pt) | 0.6 |
| Thermal Properties | |
|---|---|
| Melting Range C | 900-940 |
| Casting Temp C | 1040 |
| Density g/cc | 14 |
| Expansion at 500C | |
| Expansion at 600C | |
| Burnout Temp C | 650 |