PRIMA680LR

Master alloy for the production of yellow 375 – 417 – 585 ‰ gold jewellery obtained by investment casting. This product, thanks to its complex composition made of numerous different special elements, ensures an extreme level of deoxidation, an extreme surface quality, an enhanced fluidity and a long lasting of this features also after many reuses of casting scraps, making it the most advanced solution for castings with and without stones in place. The use is suggested with the addition of 10 – 30 % of pure silver to the master alloy.

375 ‰

417 ‰

585 ‰

Hardness as cast

121 HV

118 HV

141 HV

Density

11.08 g/cm3

11.42 g/cm3

12.92 g/cm3

Melting Range

Solidus: 777 °C
Liquidus: 869 °C

Solidus: 778 °C
Liquidus: 863 °C

Solidus: 814 °C
Liquidus: 865 °C

Description

PRIMA680LR

	375 ‰	417 ‰	585 ‰
Hardness as cast	121 HV	118 HV	141 HV
Density	11.08 g/cm3	11.42 g/cm3	12.92 g/cm3
Melting Range	Solidus: 777 °C Liquidus: 869 °C	Solidus: 778 °C Liquidus: 863 °C	Solidus: 814 °C Liquidus: 865 °C