HT-1559 MEDIUM WHITE FABRICATION PURPOSE

United # HT 1559 Medium White Alloys are formulated for 9K to 18 karat medium white gold sheet, plate, and wire fabrication giving a MediumWhite color. The # HT 1559 MediumWhite Alloy can also be used for investment casting if desired.

MELTING The # HT 1559 MediumWhite 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 9 - 10 K – 1040º C

FOR INGOTS                       1904º F

14 K – 1010º C

1850º F

18 K – 1015º C

1860º F