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470 Standard Yellow Casting Master Alloy 10-14K - 1 oz.
Our Price:
$
27.00
Product Code:
UN470
Qty:
Description
Instructions
470 Standard Yellow Casting Master Alloy 10-14K. 1 oz. (28 grams).
No gold content
Alloy #470
Purpose
Mix Alloy # 470 with fine gold to obtain10K or 14K Standard Yellow Gold for casting.
Melting
Melt temperature for 10K Alloyed Grain: 990°-1020°C, 1815°-1870°F
Melt temperature for 14K Alloyed Grain: 970°-990°C, 1780°-1815°F
Melt temperature for Alloying: 1030°-1065°C, 1900°-1950°F
Pre-graining is recommended for all alloy and fine gold before casting to assure a uniform mixture.
Flask Temperature
Increase normal temperature 50°F
Fluxing
Boracic 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. Flouric-based investment removers are the best for removing the silicon oxide in invisible coating.
Re-Melting
50% fresh mix for re-melting is recommended, unless
#99 Alloy Replenisher
is used.
Notes
Melt temperature may vary with type of unit.
this alloy is designed for casting only.
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