According to an embodiment of the present invention, a seawater erosion fatigue tester comprises: an actuator applying a fatigue load in a vertical direction; a jig member connected to the actuator and a specimen to transmit the fatigue load of the actuator to the specimen; and a seawater chamber having an insertion hole on a side surface thereof, to which the specimen is inserted to be exposed to seawater accommodated therein. The specimen is arranged for a portion thereof to protrude to the outside of the insertion hole, and a gap is formed between the specimen and the insertion hole. Moreover, a water leakage prevention member may be provided in the gap.;COPYRIGHT KIPO 2019
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