	US 11,746,397 B2
	Palladium-copper-silver-ruthenium alloy
Jonas Fecher, Hanau (DE); and Nicole Staudt, Hanau (DE)
Assigned to HERAEUS DEUTSCHLAND GMBH & CO. KG, Hanau (DE)
Filed by Heraeus Deutschland GmbH & Co. KG, Hanau (DE)
Filed on Aug. 27, 2021, as Appl. No. 17/446,209.
Claims priority of application No. 20193903 (EP), filed on Sep. 1, 2020.
Prior Publication US 2022/0064761 A1, Mar. 3, 2022
Int. Cl. C22C 5/04 (2006.01)

CPC C22C 5/04 (2013.01)

20 Claims

1. A palladium-copper-silver alloy with palladium as the main component, wherein the palladium-copper-silver alloy

has a weight ratio of palladium to copper of at least 1.05 and at most 1.6,

has a weight ratio of palladium to silver of at least 3 and at most 6,

contains at least 1.5 wt % and up to a maximum of 6 wt % of ruthenium, or contains more than 1 wt % and up to a maximum of 6 wt % of rhodium or a mixture of ruthenium and rhodium, and

contains at most 1 wt % of other metallic elements including impurities.