At 1273 K, the principal products in the reaction of uranium carbides with Cr-Fe-Ni alloys are UNiC2 and the Laves phase U(Fe,Ni,Cr)2. At 973 K, the principal products are UNi5 and (Cr, Fe)7C3. At the lower temperature, reaction with uranium monocarbide is limited by the rate of formation of UNi5. Liquid formation was observed in the UC Type 316 stainless system at 1292 ± 8 K and at 1351 ± 12 K in the UC Inconel 718 system.