Al-casting alloy

An Al casting alloy containing at least five of the following alloy constituents:

• Si:
• 3.0% to 3.8% by weight
• Mg:
• 0.3% to 0.8% by weight
• Cr:
• 0.05% to 0.35% by weight
• Fe:
• <0.18% by weight
• Mn:
• <0.06% by weight
• Ti:
• <0.16% by weight
• Cu:
• 0.006-0.015% by weight
• Sr:
• 0.010% to 0.030% by weight
• Zr<0.006% by weight
• Zn<0.006% by weight
• Impurities:
• <0.1% by weight
• and is supplemented by Al to an extent of 100% by weight in each case.