Composition:
Gold 56%
Palladium 4%
Silver 25%
Copper 13.5%
Zinc 1%
Balance In, Ir
Color: Yelow
Applications: Pacific 56 is a high noble yellow colored Type 1V extra hard cast gold dental casting alloy. It is designed for use in crowns, bridges, comples inlays and onlays and removable partial denture frameworks.
Physical
Properites:
| Casting Temperature | 1800F (980C) |
| Melting Range | 1600-1710F (870-930C) |
| Density (gm/cc) | 13.6 |
| Vickers Hardness | Q - 186, H-254 |
| Tensile Strength | Q-73,000 psi H-108,000 psi |
| Yield Strength | Q-54,000 psi, H-104,000 psi |
| Elastic Modulus | 14,500,000 |
| Elongation(%) | Q-38, H-3 |
Recommended Processing:
| Recomended Solders | 585 |
| Recommended Investment | GB |
Spruing:
Single units - Direct method with 8 ga. sprues and adequate resevoirs.
Multiple Units - Indirect Method with runner bars and 8 ga. sprues.
Investment: Use a low-heat gypsum-based investment following the manufacturer's instructions.
Burnout: After adequate set-up time, place ring(s) in oven at room temperature and raise temperature to 1200F (650C) and hold for 1 hour. Add ten minutes for each additional ring.
Melting and Casting: PACIFIC 56 has a casting temperature of 1800F(980C). An air/gas torch with multiorifice tip and a white flux are recommended. Clean buttons may be remelted with 50% addition of new alloy. Do not overheat the alloy.
Preparing Framework: Casting may be blasted using aluminum oxide. To heat harden, heat soak for 15 minutes in a 600F (315C) furnace and allow to bench cool. Pickle with a good pickling acid. Shape, finish and polish.
Soldering:Use 585 solder with a paste flux and an air/gas torch.
| home | c&b alloys | msds |