Ultra White For Making 10-18 White Multi-Purpose Alloy-Per Troy Ounce (20 DWT)

This ultra white fabrication alloy is nickel based. Contains no gold. Contains no silver. Suitable for making white gold alloy from 10K to 18K. This is a multi-purpose casting and fabrication alloy. Sold by the troy ounce (20 DWT).   Contents: Cu 63% Ag 0% Zn 17% Ni 19.5%   Note: There are proprietary metals in the formulation which are not included in the composition section.     You should obtain excellent results by following a few simple instructions. 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 1090C - 1100C / 1994F - 2030F Step : 2 Casting Temperature for 10K Alloyed Grain 1085C - 1105C / 1985F - 2021F Casting Temperature for 14K Alloyed Grain 1025C- 1045C /  1877F- 1913F Casting Temperature for 18K Alloyed Grain  995C - 1015C /  1832F - 1859F       NOTES: Melt temperature may vary with type of unit. This alloy is designed for casting and fabrication application.   Flask Temperature: Normal recommended temperature in the range of 540 C to 675 C / 1004° F – 1247° F depending on size of flask, karat & type of jewelry. Fluxing white gold is extremely important to pick-up oxides. Boric Acid is the recommended flux. 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: 25 minutes. Investment Removal: Most standard investment removers will successfully remove the investment powder. Use of aggressive acids causes stress corrosion and surface damage and is therefore not recommended.   Removal: We recommend a 70% fresh - 30% scrap mix. White gold alloy has about 1/3 the reusability of yellow gold alloys.