| 摘要 |
PROBLEM TO BE SOLVED: To provide a high toughness Al alloy casting in which tensile strength, 0.2% proof stress and elongation can be obtained at high levels in a well balance. SOLUTION: The high toughness Al alloy casting has a composition comprising, by mass, 2 to 5% Si, 0.2 to 0.5% Mg, 0.4 to 0.8% Cu, 0.05 to 0.3% Ge, and the balance Al with inevitable impurities. The casting has the tensile strength of≥280 MPa, the 0.2% proof stress of≥220 MPa, and the elongation of≥12%. COPYRIGHT: (C)2006,JPO&NCIPI
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