[CAMmando]

PCD blanks usualy have a tungsten backing or substrate that supports the diamond. The diamond is sintered with cobalt which is what actually is eroded in the edm process. The wire actually travels around the diamond crystals. So the process is dependant on several factors. The grade of diamond (cobalt content, crystal size). The generator on the machine.

How well does your machine cut carbide ? This may be an indication.

I think you are going to have to do some test cutting if you have an older unsubmerged machine and dont have tech support or existing technology files.

If your machine cuts it without excessive wirebreaks, rest assured the cut speed will be slow.