| 摘要 |
PROBLEM TO BE SOLVED: To provide an aluminum alloy for a heat sink having better thermal conductivity than that of the conventional Al-Si die casting alloy while keeping its die castability. SOLUTION: This aluminum alloy material for a heat sink has a composition containing, by weight, 0.002 to 0.08% B, 4.0 to 14.0% Si and 0.2 to 1.0% Fe, and the balance aluminum with inevitable impurities.
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