SPARK309L

Master alloy for the production of yellow 375 – 417 – 585 ‰ gold jewellery obtained by investment casting. The elements contained in this product ensure a high deoxidation in casting and a high surface quality, making it suitable for castings with and without stones in place.

375 ‰

417 ‰

585 ‰

Hardness as cast

103 HV

104 HV

119 HV

Density

10.94 g/cm3

11.22 g/cm3

12.78 g/cm3

Melting Range

Solidus: 840 °C
Liquidus: 910 °C

Solidus: 825 °C
Liquidus: 910 °C

Solidus: 825 °C
Liquidus: 875 °C

Description

SPARK309L

	375 ‰	417 ‰	585 ‰
Hardness as cast	103 HV	104 HV	119 HV
Density	10.94 g/cm3	11.22 g/cm3	12.78 g/cm3
Melting Range	Solidus: 840 °C Liquidus: 910 °C	Solidus: 825 °C Liquidus: 910 °C	Solidus: 825 °C Liquidus: 875 °C