 #900
Alloy
Thank you for using UNITED'S alloys.
UNITED'S #900 ALLOY may be used for 10K - 18K white gold casting,
which produces a white finished color. #900 contains a boron
deoxidizer.
You should obtain excellent results by following a few simple
instructions.
MELTING
| Melt Temperature for 10K Alloyed Grain |
1030°- 1040°C |
1886°-1904°F |
| Melt Temperature for 14 & 18K Alloyed Grain |
1020°C |
1832°-1868°F |
| Melt Temperature for Alloying |
1050°- 1070°C |
1922°- 1958°F |
We do recommend pre-graining all alloy and fine gold before
casting to assure a uniform mixture.
FLUXING
Fluxing white gold is extremely important to pick-up oxides. Boric
Acid is the recommended flux. Do not use carbon fluxes or any fluxes
designed for refining; i.e. soda ash, saltpeter, etc. Avoid flux in
bottom pour automatic casting units.
QUENCH TIME
8 - 10 minutes
INVESTMENT REMOVAL
Most standard investment removers will successfully remove the
investment powder. Fluoric-based investment removers are the best
for removing the silicon oxide invisible coating. UNITED'S Brite-Cast
Investment Remover also works very well.
REMELTING
We recommend a 70% fresh - 30% scrap mix. White gold alloy has about
1/3 the reusability of yellow gold alloys.
NOTES
Melt temperature may vary with type of unit. This alloy is designed
for casting only.
TECHNICAL ASSISTANCE
Always available…
Call 1-800-999-3463 / 1-800-999-FINE
E-mail / doc@unitedpmr.com
Web-Site / www.unitedpmr.com |