| http://www.w3.org/ns/prov#value | - As an element that can be added to the Al alloy mainly containing Al, besides Nd, any one of Ti, Cr, Ta, or at least two elements selected from a group consisting essentially of Nd, Ti, Cr, and Ta may be used and, in this case, it is preferable that total contents are 2% or more by atom (2 atom %) (described later in detail).
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