SUBSTRATE HAVING SURFACE MADE ENTIRELY OR AT LEAST PARTIALLY OF METAL MATERIAL WHEREIN SURFACE OF SAID METAL MATERIAL HAS HOLES, AND SUBSTRATE-RESIN CURED PRODUCT COMPOSITE CONTAINING SAID SUBSTRATE AND RESIN CURED PRODUCT

摘要

Provided is a substrate having a surface made entirely or at least partially of a metal material, wherein the surface of the metal material has holes, and requirements (1) and (2) below are satisfied. (1) The load length ratio (Pmr) of a cross section curve is at least 40% at a cutting level of 30% and an evaluation length of 10 μm. (2) The aspect ratio (b/a) of the average hole entrance diameter (a) to the average hole depth (b) is 2-50.