375 ‰Description
STAR220L
Universal master alloy for the production of white 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.
| 375 ‰ | 417 ‰ | 585 ‰ | ||
| Hardness as cast | 125 HV | 142 HV | 145 HV | |
| Density | 10.95 g/cm3 | 10.95 g/cm3 | 12.71 g/cm3 | |
| Melting Range | Solidus: 882 °C Liquidus: 967 °C |
Solidus: 882 °C Liquidus: 967 °C |
Solidus: 916 °C Liquidus: 963 °C |
