Division Watches and Jewelry	Data sheet for alloy
	Au 750/3165 Pd
	Colour	white	Code	3165

General description	18 ct white gold nickel-free alloy containing Pd, for universal use. It can easily be cupped, stamped, rolled, drawn, polished and machined. Alloy for casting under protective atmosphere.

Physical properties	Specific gravity [g/cm3]	15.8	Melting range [°C]	1035-1115

Mechanical properties			Annealed	20% cold worked	75% cold worked
Vickers hardness		[HV1]	155	240	255
Yield hardness	Rm	[Mpa]	530	720	895
Elastic limit	Rp0.2	[MPa]	330	625	790
Plastic elongation	A	[%]	30	2	1

Processing guidelines
ANNEALING	700 °C for 20 to 30 minutes then quenched in water. In order to avoid oxidation, work under reducing atmosphere.
COLD WORKING	The amount of coldwork completed before annealing should be between 30% and 75% reduction in area.
SOLDERING	By torch or furnace. The nickel-free solders N° 3532 (840-910 °C), 3533 (925-985 °C), 3534 (750-810 °C) and 3535 (650-780 °C) are strongly recommended. For alternatives please see list of solders.
PICKLING	with DESOXYD (following operating instructions) or with hot 10% sulphuric acid added to hot 10 g/l ammonium persulphate. The slight change of colour which could appear can be removed by polishing.
CASTING	Quench the cylinder just after removing from the casting furnace to keep malleability to a hardness of 160 HV instead of 210 HV. Do not mix or solder with Ni-alloys. The alloy can be recycled.
PATENT	US 6,342,182 B1 - EP 1 010 768 B1

18.03.2005

METALOR Technologies SA - Av. du Vignoble - CH-2009 Neuchâtel Phone: +41(0)32 720 61 11 - http://www.metalor.com/watch

16.01.2004

Close this window