This paper is the experimental study on the behavior of welded H-shape beam using TMCP steel. The purpose of this study is to evaluate the elasto-plastic behavior of TMCP steel when it is applied as a beam member. A total of six specimens has been tested for two different types of beams. The specimens were loaded monotonic and cyclic. In the cyclic loading, the parameter for load control based on the value of vertical deflection corresponds to yield moment of beam. The test results are summarized with parameters of yield strength, ultimate strength and energy dissipation capacity.