 United
Precious Metal Refining, Inc.
#400 Series Alloys
Thank you for using UNITED'S alloys.
UNITED 400 SERIES ALLOYS may be used for 10K & 14K casting with
the exceptions #450 for 14K only.
You should obtain excellent results by following a few simple
instructions.
MELTING
| Melt Temperature for 14K Alloyed Grain |
970° - 990° C |
1780° - 1815° F |
| Melt Temperature for 10K Alloyed Grain |
990° - 1020° C |
1815° - 1870° F |
| Melt Temperature for Alloying |
1030° - 1065° C |
1900° - 1950° F |
We do recommend pre-graining all alloy and fine gold before
casting to assure a uniform mixture.
FLASK TEMPERATURE
Increase normal temperature 50° F.
FLUXING
Boric Acid is the recommended flux. Use as little flux as possible.
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
15 - 20 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 50% fresh mix for remelting, unless our # 99 Alloy
Replenisher is used.
NOTES
Melt temperature may vary with type of unit. These alloys are
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 |