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Abstract

A cast component with high hot-process mechanical strength and high creep strength in the 230-380.degree. C. temperature range, made of aluminum alloy containing, in wt %: Mg<0.1, and preferably <0.03; Si: 4.5-10; Cu: 2.0-5.0 and preferably 3.0-4.0; Ni<0.4 and preferably <0.1; Ti: 0.05-0.25 and preferably 0.08-0.20; Zr: 0.05-0.25 and preferably 0.12-0.20; Fe: <0.9 and preferably <0.3; Zn<0.3 and preferably <0.1; optionally V: 0.02-0.30 preferably 0.04-0.20; Mn: 0.1-0.5 preferably 0.15-0.40; Hf, Nb, Ta, Cr, Mo and/or W: 0.03-0.30; other elements <0.10 each and <0.30 in total, the rest being aluminum. The alloy is used for the manufacture of internal combustion engine cylinder heads.

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First Claim