| 摘要 |
Provided are a surface-treated steel sheet comprising a zinc coating such that the generation of whiskers exceeding 5 µm in length can be suppressed by controlling the crystal orientation of the zinc coating; and a cover member for an electronic device or for a printed circuit board, this cover member being machined and formed using the aforementioned surface-treated steel sheet. The aforementioned surface-treated steel sheet comprising a zinc coating is characterized in that the crystal orientation index of the surface (0002) thereof is 2.5 or more. As mentioned above, also provided is a cover member for an electronic device or for a printed circuit board, this cover member being machined and formed using the aforementioned surface-treated steel sheet. |
