The specimen fixing jig for a tensile test according to the present invention is configured to fix a specimen including a body portion formed elongated in the vertical direction, and a pair of end portions each connected to the upper and lower portions of the body portion and having a wider width than the body portion. In the specimen fixing jig for tensile testing for, an upper frame on which an upper end portion of the specimen is seated, a lower frame provided to be spaced apart from a lower portion of the upper frame, and spaced apart from the upper frame in a horizontal direction to the lower end portion of the specimen And a pair of upper fixing blocks provided so as to constrain the side and lower portions of the upper end portion, and a pair of lower fixing blocks provided so as to be spaced apart from the lower frame in the left and right directions to constrain the upper side portions of the lower end portions.
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