Ligature for casting of red gold

Ligature for all types of casting. Is suitable for casting with stones. Alloy on the basis of this ligature has good flowability and high anti-oxidizing properties.
Corresponds to the following proportions:
585 Au + 33 Ag + 382 Cutekhnicheskaya characteristic:
Test: 375-585
Chemical composition: Cu of 95%, Zn of 5%
Color: red
Density: 12,53 g/cm3
Melting temperature: 1045 °C
Melting temperature of jewelry alloy: 990 °C
Annealing temperature: 550 °C
Hardness according to Brinell: 200