Thank you for the information. I was aware of this material, and the visitors from PPPL also suggested this material. Though I knew this material was not suitable, we tried this material as the first version of our spark plug. Here is what happened. First the entire spark plug was maufactured from Maycor. The threads crumbled and the sparkplug broke in half during manufacturing. This was our Mark I spark plug. In the next version (Mark II) we made a sleeve out of maycor and the spark plugs (four of them) broke the very first time we fired the device.
