| 摘要 |
[Problem] To enable a metal substrate with an insulating layer to maintain good strength and insulation characteristics for a flexible substrate even if the metal substrate has been subjected to a high temperature history of 550°C or higher. [Solution] A metal substrate (10) with an insulating layer, which comprises a steel base (11) and an Al layer (12) that is provided on at least one surface of the steel base (11), and wherein an anodic oxide film (13) having a porous structure is formed, as an electrically insulating layer, on the Al layer (12). The steel base (11) is configured to contain 0.0025-0.02% by mass of N. |
