I haven't any direct experience with Alloy 120 but since it doesn't contain any element which would encourage formation of an adherent oxide (Cr, Al etc.) I would expect the oxidation resistance not to be significantly different from Nickel or Iron.
Of course our real high temperature exposure is short in vaping so this may not be of great significance. It's probably well worth evaluation as a coil wire based on it's overall properties.
Duane
wouldnt that suggest it wouldnt work as a contact coil?!?!