The mechanical properties of RVD graphite have been examined from room temperature to 5500Β°F. Uniaxial tensile and compressive tests were performed in both the with-grain and across-grain directions at nine temperature levels, and the compIete stress-strain curves and lateral strain-axial strain curves were recorded. The effects of strain rate at high temperature were studied by performing tensile tests at three different constant strain rates and also by suddenly increasing the strain rate during a tensile test. Tensile and compressive creep tests, some of 90 min duration, were performed. Tensile relaxation tests and cyclic tensile tests were run at 45OO'F. The dynamic moduli of elasticity were measured and compared with the values obtained by drawing tangents to the initial portions of the stress-strain curves. Torsion tests were performed at 4500Β°F on specimens with tensile preloads in order to examine the behavior of graphite under multiaxial stress states. * l&car& sponsored by the U.S. Atomic Energy Commission under contract with the Union Carbide Caporation. 42. The stress dependence of the tensile creep rate in carbone and graphites.