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AssigneesGebr. Kemper GmbH + Co., KG Metallwerke, Jrg Gunzenhauser AG, R. Nussbaum AG Metallgiesserei Und Armaturenfabrik, Viega GmbH & Co. KG
InventorsKatrin Müller, Patrik Zeiter, Frank Leistritz
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The present invention relates to a copper alloy, in particular for components which carry media or drinking water, in particular fittings, valves or compression joints and also an advantageous use of the copper alloy and components for lines carrying media or drinking water. It is an object of the present invention to provide a copper alloy which has good corrosion resistance, good castability and mechanical workability and also good mechanical properties and displays good migration values, particularly in respect of the migration of lead and nickel ions into drinking water. The copper alloy provided for this purpose by the present invention comprises from 2% by weight to 4.5% by weight of silicon, from 1 to 15% by weight of zinc and from 0.05% by weight to 2% by weight of manganese. Furthermore, from 0.05 to 0.4% by weight of aluminium and from 0.05 to 2% by weight of tin can optionally be present. As balance, the copper alloy contains copper and unavoidable impurities.
Use of a copper alloy for the manufacture of components for gas or water lines which carry media, in particular drinking water lines as well as fittings and valves of the same, wherein the copper alloy comprises, in % by weight:
Components for gas or water lines which carry media, in particular drinking water lines as well as fittings and valves of the same, at least partially consisting of a copper alloy, comprising in % by weight:
Components for gas or water lines which carry media, in particular drinking water lines as well as fittings and valves of the same, at least partially consisting of a copper alloy, comprising in % by weight:
Components according to claim to 18, characterized in that the components are valves with fixed compression connection.
Dependencies are inferred from the claim text.