External member for a watch

A body of an external member is made of an aluminum alloy containing 0.5-2.5% of magnesium by weight, less than 0.01% of silicon by weight, and less than 0.01% of iron by weight. An anodic oxide film is formed on the body.

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Bibliographische Detailangaben
Hauptverfasser:	KUSHIDA, HACHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS APPARATUS THEREFOR CHEMISTRY ELECTROFORMING ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FERROUS OR NON-FERROUS ALLOYS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HOROLOGY MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL MECHANICALLY-DRIVEN CLOCKS OR WATCHES METALLURGY PHYSICS PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTIONOF COATINGS TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION TECHNICAL SUBJECTS COVERED BY FORMER USPC TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A body of an external member is made of an aluminum alloy containing 0.5-2.5% of magnesium by weight, less than 0.01% of silicon by weight, and less than 0.01% of iron by weight. An anodic oxide film is formed on the body.