| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an aluminum alloy casting having excellent castability and high ductility in a casting condition and where aging more after casting is suppressed or prevented, and a manufacturing method therefor.SOLUTION: An aluminum alloy casting contains, by mass ratio, Si of 6.00% to 7.50%, Mg of less than 0.20% and the balance Al with inevitable impurities. The aluminum alloy casting contains, by mass ratio, Si of 6.00% to 7.50%, Mg of less than 0.20%, Zr of 0.05% to 0.20% and the balance Al with inevitable impurities. The aluminum alloy casting contains, by mass ratio, Si of 6.00% to 7.50%, Mg of less than 0.20%, Zr of 0.05% to 0.20%, Mo of 0.20% or less, total 0.40% or less of at least one kind of element selected from a group of Ti of 0.20% or less and Sr of 0.01% or less and the balance Al with inevitable impurities.</p> |
