Sometime ago I posted here and in sci materials (?) about the
description used by network people about 'better copper' being
used in cat5e.
Per Belden, there is no 'better copper' in this cable. It's plain
old 'BC' bare copper. It's not ox free, or alloy, or ....
The claim to 'better copper' is probably shorthand for
better performance as in twists, insulation and gauge and ...(?)