| 摘要 |
PROBLEM TO BE SOLVED: To improve a mechanical property of an aluminum alloy for low Si casting by starting from prior art.SOLUTION: The problem is solved by an aluminum alloy for casting containing an alloy component: Si: 3.0 to 3.8 mass%, Mg: 0.3 to 0.6 mass%, Cr: 0.25 to 0.35 mass%, Fe: less than 0.18 mass%, Mn: less than 0.06 mass%, Ti: less than 0.16 mass%, Cu: less than 0.006 mass%, Sr: 0.010 to 0.030 mass%, Zr: less than 0.006 mass%, Zn: less than 0.006 mass%, impurities: less than 0.1 mass%, preferably less than 0.005 mass% and the balance Al to be 100 mass%. |
