HT-1753 ULTRA WHITE ALL PURPOSE

HT-1753 ULTRA WHITE ALL PURPOSE

UNITED’S # HT 1753 ALLOY may be used for 9 K to 18 K white gold casting, or hand-made (rolling), which produces a Ultra White finished color. # HT 1753 is a high fluidity alloy that contains a silicon & boron as deoxidizers.

MELTING We do recommend pre-alloying all alloy and fine gold with aggressive stirring & fluxing to assure a uniform mixture.

Step : 1 Pre- Alloying (Fine gold + alloy) Temperature 1055° – 1065° C

1931° – 1949° F

Step : 2 Casting Temperature for 9K – 10 K Alloyed Grain 1040° – 1050° C

1904° – 1922° F

Casting Temperature for 14 K – 18 K Alloyed Grain 1005° – 1025° C

1841° – 1877° F

United # HT 1753 Ultra White Alloy is formulated for 9 K to 18 Karat Ultra White Gold sheet, plate and wire fabrication giving a Ultra White color. The # HT 1753 Ultra White Alloy can also be used for Continuous Casting of bars, rods and wire stocks. This alloy may also be used for investment casting but re-usability will be limited.

PRE-ALLOYING The # HT 1753 Ultra White Alloy and fine gold should be melted together in a clean crucible. Put alloy in the bottom of the crucible and fine gold on top. Initial melting temperature should be 1045º C – 1060º C / 1913º F – 1940º F. Drop temperature somewhat before pouring as listed below. Boric acid flux may be used to keep the metal clean during the melting process. The metal should be mixed well with a stirring rod before pouring to assure a good mix.

POURING TEMP 9K – 10 K – 1010º C – 1020º C

FOR INGOTS 1850º F – 1868º F

14 K – 18 K – 1020º C – 1040º C

1868º F – 1904º F