SiC elements can go a bit higher than that but not by much IIRC, I have
seen them come up on ebay occasionally. MoSi2 elements can go higher
depending on the element details upto maybe 1900C. I did correspond with
a guy in Hawaii that used MoSi2 in a glass furnace and did the research
with Kanthal as they have good information readily available, he then
bought the equivalent from a Chinese supplier to save money. The control
gets more complicated from SiC to MoSI2, IIRC SiC can be controlled with
a simple phase angle controller off the mains, I asked Kanthal and they
cut them to your requirement regarding voltage. MoSi2 have a low
resistance when cold which increases as it heats so a typical controller
involved a thyristor controller on the input to a suitable step down
transformer which would give a suitable voltage for the hot element.
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