Considering the excellent high temperature mechanical properties and oxidation resistance,Co-based alloy S-816 may be used as sealing material of solid oxide fuel cell(SOFC).The flow stress of Co-based alloy S-816 was tested on the thermal simulation testing machine Gleeble-3800 with strain rate 0.1s-1,1s-1,10s-1 and deformation temperature 900℃~1200℃.The results show that at 900℃~1200℃ the peak stresses of S-816 are higher than martensitic steel 403Nb and austenitic heat resistance steel S31042,106%~172% a...