375 ‰Description
STAR693L
Universal master alloy for the production of red 375 – 417 – 585 ‰ gold jewellery obtained by investment casting and mechanical working. The elements contained in this product ensure a high surface quality in investment casting, while in mechanical working a high deformation capability thanks the small grain structure, making it suitable for the production of hand and machine made hollow and solid chains, deep drawn items and tube. The use is suggested with the addition of 0 – 10 % of pure silver to the master alloy.
| 375 ‰ | 417 ‰ | 585 ‰ | ||
| Hardness as cast | 87 HV | 98 HV | 119 HV | |
| Density | 11.09 g/cm3 | 11.38 g/cm3 | 12.85 g/cm3 | |
| Melting Range | Solidus: 957 °C Liquidus: 984 °C |
Solidus: 951 °C Liquidus: 975 °C |
Solidus: 873 °C Liquidus: 940 °C |
