refractoriness

From refractory +‎ -ness.

refractoriness (uncountable)

1. The quality of being refractory.
   • 2001, Oliver Sacks, Uncle Tungsten: Memories of a Chemical Boyhood, Alfred A. Knopf (2001), 8,

     Uncle loved the desnsity of the tungsten he made, and its refractoriness, its great chemical stability.