Composition:
Gold 68.8%
Palladium 3.4%
Platinum 2.9%
Silver 12.4%
Copper 12.3%
Balance In, Ir
Color: Yelow
Applications: Pacific 69 is a high noble, yellow colored Type 1V crown and bridge dental casting alloy. It is designed for use in single and 3/4 crowns, inlays, veneer crowns, and short span bridges.
Physical Properites:
| Casting Temperature | 1940F (1060C) |
| Melting Range | 1688-1832F (920-1000C) |
| Density (gm/cc) | 15.2 |
| Vickers Hardness | Q - 180, H-280 |
| Tensile Strength | Q-71,000 psi H-106,000 psi |
| Yield Strength | Q-45,000 psi, H-88,000 psi |
| Elastic Modulus | H-15,000,000 |
| Elongation(%) | Q-35, H-15 |
Recommended Processing:
| Recomended Solders | 650 |
| Recommended Investment |
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 1300F (704C) and hold for 1 hour. Add ten minutes for each additional ring.
Melting and Casting: PACIFIC 69 has a casting temperature of 1940F(1060C). An air/gas torch with multiorifice tip and a white flux are recommended. Use a minimum amount of flux! The alloy will run together and pool and a thin cloudy surface will appear. Cast when the cloudiness disappears. Clean buttons may be remelted with 50% addition of new alloy. Do not overheat the alloy.
Preparing Framework: Casting may be blasted using 50 micron aluminum oxide or glass beads. To heat harden, heat soak for 15 minutes at 600F (315C) and allow to bench cool. Pickle with a good pickling acid. Shape, finish and polish.
Soldering:Use 650 solder with a paste flux and an air/gas torch.
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