Mold made of a cupro-aluminium alloy for making glass bottles

A glass product manufacturing mould consists at least partially of a copper-aluminium alloy containing (by wt.) 0.02% to the solubility limit (preferably 0.02-1.0%) of one or more of Sc, Sr, Y, Zr and Hf and/or 0.02% to the solubility limit (preferably 0.02-2.0% total and 0.01-0.8% each) of one or more lanthanides. Preferably, the alloy contains (by wt.) (i) 5-15% Al, 2-7% Ni, 2-7% Fe, 0.05-1.5% Si, 0.02-2% Mn, NOTGREATER 0.25% Zn, balance Cu, Sc, Sr, Y, Zr, Hf, lanthanides and impurities; or (ii) 5-15% Al, 12-18% Ni, NOTGREATER 1% Fe, 0.05-1.5% Si, 0.02-2% Mn, 5-12% Zn, balance Cu, Sc, Sr, Y, Zr, Hf, lanthanides and impurities. Also claimed is part of the above mould belonging to the casing or bottom of a rough forming or finishing mould or to a collar mould. Moule pour la fabrication de produits verriers dont une partie au moins est constituée d'un alliage cupro-aluminium et dont l'alliage contient, en poids : de 0,02 à la limite de solubilité d'un ou plusieurs éléments choisis parmi Sc, Sr, Y, Zr et Hf, et/ou de 0,02 à la limite de solubilité d'un ou plusieurs lanthanides.