| 摘要 |
PROBLEM TO BE SOLVED: To provide a propeller for watercraft having superior abrasion resistance and deformation resistance. SOLUTION: The propeller for watercraft comprises a propeller body having a blade portion and a hub portion, the propeller body being made of an aluminum alloy and having Vickers hardness of 50-95 Hv, and an anodized coating of aluminum alloy provided so as to cover a surface of the propeller body. The anodized coating has a thickness of 20-100μm, and preferably has a hardness of 300-450 Hv. COPYRIGHT: (C)2008,JPO&INPIT
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