STAINLESS-STEEL BASE MATERIAL WITH CONDUCTIVE METAL LAYER AND ITS MANUFACTURING METHOD, AND HARD DISK SUSPENSION AND MATERIAL THEREOF

摘要

PROBLEM TO BE SOLVED: To provide a stainless-steel base material with a conductive metal layer which can achieve an excellent etching process accuracy while stably securing the adhesiveness between the conductive metal layer formed on the stainless-steel base material and a polyimide-based resin layer, and which uses no environmental load material, and to provide its manufacturing method and a hard disc suspension material using the same.

SOLUTION: The stainless-steel base material with the conductive metal layer has the conductive metal layer on a stainless steel sheet. The conductive metal layer has a thickness of 0.1-10μm and a surface roughness of Ra=0.05 to 1μm and Rz=1 to 5μm. The manufacturing method of the stainless-steel base material and the hard disc suspension material using this base material are also provided.

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