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HT-1548 ULTRA WHITE FABRICATION PURPOSE
HT-1548 ULTRA WHITE FABRICATION PURPOSE
FABRICATION technical data [PDF]United # HT-1548 Ultra White Alloy is formulated for 14 K to 18 K
ultra white gold sheet, plate, and wire fabrication giving a ultra white color.
The # HT-1548 Ultra White Alloy can also be used for investment casting if
desired.
MELTING The # HT-1548 Ultra White Gold Alloy and fine gold should
be melted together in a clean crucible. Put the alloy in the bottom of the
crucible and the fine gold on top. Initial melting temperature should be 1070º
C / 1958º F. Drop the temperature somewhat before pouring as listed below.
Boric acid flux should be used to keep the metal clean during the melting
process. The molten metal should be mixed well with a stirring rod before
pouring to assure a good mix. A neutral or reducing cover gas is very helpful
in melting white gold alloys.
POURING TEMP 14 K – 1010º C
FOR INGOTS 1850º F
18 K – 1015º C
1860º F