 United
Precious Metal Refining, Inc.
#200 Series
UNITED 200 SERIES ALLOYS
Thank you for using UNITED'S alloys.
UNITED 200 SERIES ALLOYS may be used for 10K & 14K casting with
the exceptions #200 & #240 for 14K only.
You should obtain excellent results by following a few simple
instructions.
MELTING
| Melt Temperature for 14K Alloyed Grain |
950° - 970° C |
1745° - 1780° F |
| Melt Temperature for 10K Alloyed Grain |
970° - 990° C |
1780° - 1815° F |
| Melt Temperature for Alloying |
1010° - 1040° C |
1850° - 1910° F |
We do recommend pre-graining all alloy and fine gold before
casting to assure a uniform mixture.
FLASK TEMPERATURE
Normal recommended temperature.
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 35% - 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 |