AlphaRoyal1764This alloy has been developed for the production of investment casting, pressing, hollow tube, wire and chain of 8K-9K-10K-14K-18K-20K-21K-22K red gold alloys. Provides long-term corrosion resistance and high shininess thanks to its anti-oxide elements. Alpha Royal 1764 contains high concentration of grain refiners. The alloy contains 4.5% silver.