Abstract: The present invention relates to an aluminium casting alloy having (in % by weight) Cu: 6.0-8.0%, Mn: 0.3-0.055%, Zr: 0.18-0.25%, Si: 3.0-7.0%, Ti: 0.05-0.2%. Sr: up to 0.03%, V: up to 0.04%, Fe: up to 0.25%, remainder aluminium and unavoidable impurities, and a casting for a combustion engine. The aluminium casting alloy according to the invention has high mechanical properties after a longer operating duration at high temperatures and at the same time can be cast without any problems. Furthermore, the casting according to the invention has optimised mechanical properties during operation at high temperatures and at the same time can be produced in an operationally reliable manner in terms of casting technology.

Abstract: A permanent casting mould for casting cast parts, in particular cylinder heads, from a molten metal, in particular a molten light metal, includes at least one mould body, which at least partially surrounds a mould cavity reproducing the cast part to be cast and, in the wall of which limiting the mould cavity, a receiver is formed having a shoulder passing into the mould cavity and including a casting mould insert seated in the receiver, which has an upper side associated with the mould cavity surrounded by the respective permanent casting mould, a base body seated in the receiver with play when the casting mould is cold and a support collar which extends over a fraction of the height of the base body of the casting mould insert and is seated with positive fit in the shoulder of the receiver.