Unlike gold, platinum has a number of industrial uses, with 80% going to the automotive industry for catalytic converters, although chemical companies also use a fair amount as well because platinum is resistanttocorrosion.
Maillechort is more practical in that it is far more resistanttocorrosion, but it is also a much more demanding material to work with, as it scratches easily and stains even more so if mishandled during assembly.