OG160A

Master alloy for casting of 375-585‰ (9-14 Kt) yellow gold

OG160A is a master alloy for 375-585‰ (9-14 Kt) yellow gold jewelry, designed for lost-wax casting in closed and open systems. It is also particularly suitable for stone-in-place casting.

The color of 585‰ gold made using OG160A shows a rich yellow hue. In title 375‰ the alloy has a light yellow hue.

The alloy is not suitable for age-hardening.

OG160A has a high level of deoxidizers, this makes it suitable for casting in closed and open systems. During melting it is clean from dirt and leaves minimum residue in the crucible.

OG160A offers excellent fluidity in casting, the as-cast tree is clean from oxide scales, it has extremely high shininess and lustrous color after finishing.


Selling unit: Packaging of 2 kg (enter quantity in Kilogram)
Code: OG160A
Brand: GOLD LINE
Price not available

VAT not included

General information
375 585
Production process Casting Casting
Typology Master alloy for gold Master alloy for gold
Color Yellow Yellow
Color shade Light yellow Rich yellow
Casting temperatures (Medium, 0.5 - 1.2 mm)
375 585
Flask from [°C] 580 -
Flask to [°C] 650 -
Metal from [°C] 965 -
Metal to [°C] 985 -
Casting temperatures (Thick, > 1.2 mm)
375 585
Flask from [°C] - 460
Flask to [°C] - 600
Metal from [°C] - 930
Metal to [°C] - 950
Melting temperatures
375 585
Melting range [°C] 90 60
Solidus [°C] 800 810
Liquidus [°C] 890 870
Pre-mixing temperature
375 585
Pre-mixing temperature [°C] 1005 990
Color coordinates
375 585
L* 88.3 88.2
a* 1.7 2.7
b* 17.6 17
c* 17.7 18.1
Physical characteristics
375 585
Density [g/cm³] 11.1 12.9
Pickling
375 585
Pickling Dip in RADIAL solution (50 g/l conc. at 60°C for 2 min.), or in sulphuric acid (10% conc. at 50°C for 5 min.) Dip in RADIAL solution (50 g/l conc. at 60°C for 2 min.), or in sulphuric acid (10% conc. at 50°C for 5 min.)
Stone-in-place casting trees
375 585
Quenching stone-in-place casting trees Let the flask cool down for 30-45 minutes, then quench in water. Let the flask cool down for 30-45 minutes, then quench in water.
Trees without stones
375 585
Quenching trees without stones Let the flask cool down for 10-15 minutes, then quench in water. Let the flask cool down for 10-15 minutes, then quench in water.
Thermal treatments - single step
375 585
Age-hardening - Temperature [°C] 250 250
Age-hardening - Time [min] 90 90
Age-hardening - Quenching Air or in furnace Air or in furnace
Product applications
375 585
Process detail Casting in open systems Casting without stones
Recommended brazing applications
Mechanical characteristics
375 585
As cast hardness [HV 0.2] 115 110
Single step age-hardening hardness [HV 0.2] 160 150
Commercial composition
375 585
Silver (%) 16 16
Copper (%) 69 69
Zinc (%) 15 15

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