[en] The tube burst tests were conducted on low tin Zircaloy-4 claddings in order to obtain preliminary perspectives on the deformation behavior and burst characteristics by changing final annealing conditions (i.e., stress-relieved and recrystallized) and test temperatures (i.e., room temperature to 500 .deg. C). The ultimate hoop stress of stress-relieved tube was exhibited higher than that of the recrystallized at all test temperatures, and the uniform burst elongation and total circumferential elongation were exhibited vice versa. The inflection point was observed on the elongation of the stress-relieved tubes at around 300 .deg. C, while the recrystallized sample showed the maximum elongation at around 400 .deg. C. The burst mechanism was believed to be occured by pinhole fracture that caused by the local stress concentration at a small crack after uniform deformation behavior until ultimate strength