917 ‰Description
STAR493
Universal master alloy for the production of 917 ‰ gold or 930 ‰ sterling silver 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.
| 917 ‰ | 930 ‰ | |||
| Hardness as cast | 92 HV | 68 HV | ||
| Density | 17.38 g/cm3 | 10.32 g/cm3 | ||
| Melting Range | Solidus: 923 °C Liquidus: 945 °C |
Solidus: 776 °C Liquidus: 895 °C |
