A hypervapotron is a water cooled device which combines the advantages of finned surfaces with the large heat transfer rates possible during boiling heat transfer. Hypervapotrons have been used as beam dumps in the past and plans are under way to use them for the divertor in the Joint European Tokamak (JET). Experiments at JET have shown that a surface heat flux of 25MW/m2 can be achieved in hypervapotrons. This performance makes this device very attractive for cooling of divertor of the International Thermonuclear Experimental Reactor (ITER). This paper presents an analytical method to predict the thermal performance of the hypervapotron made of materials other than copper. After further development and verification, the analytical method could be used for optimising designs and performance prediction.