Ykk Corporation

The University of Toyama

Tatewaki Ido

Tetsuya Katsumi

Yasuharu Yoshimura

Koichi Mikado

Takahiro Fukuyama

Kenji Matsuda

Provided is an aluminum alloy element for a slide fastener, which has improved strength and abrasion resistance. The element for the slide fastener includes a base material of an aluminum alloy having a composition represented by a general formula: AlSiCuMgTiBin which a, b, c, d, e and f each represents % by mass; a is a balance; 0.2&#x2264;b&#x2264;0.8, 0.8&#x2264;c&#x2264;1.8, 0.8&#x2264;d&#x2264;1.8, 0&#x3c;e&#x2264;0.05, and 0&#x3c;f&#x2264;0.01; and unavoidable impurity elements may be contained; the aluminum alloy comprising, dispersed therein, precipitates containing at least one element selected from a group consisting of Al, Si, Cu and Mg, the element for the slide fastener comprising a pair of leg portions and a head portion that connects the pair or leg portions and comprises a convex portion and a concave portion for engagement.

Element for slide fastener

Elements for a slide fastener are provided, which have high strength and improved abrasion resistance. More particularly, an element for a slide fastener includes as a base material, an aluminum alloy having a composition represented by a general formula: AlSiCuMgin which a, b, c and d are expressed in percentage by mass, a denotes a balance, 0.4&#x2264;b&#x2264;0.9, 0.15&#x2264;c&#x2264;0.8, 0.8&#x2264;d&#x2264;2.0, and unavoidable impurity elements may be contained; and the aluminum alloy containing a precipitate containing Mg and Si.

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Toyama, Japan

Tatewaki Ido