A test program was conducted to obtain creep rupture properties of a chromium-magnesium oxide composite alloy, Chrome-30 (93.5 percent chromium, 0.5 percent titanium, 6.0 percent magnesium oxide), at elevated temperature in an air environment. Four series of creep rupture tests were conducted at temperatures of 1700, 1850, 2000, and 2200 deg F with stresses applied ranging from 1000 to 10,000 psi using a constant load machine. The material was in the form of 0.047 inch thick sheet. In addition to the creep rupture properties, a detailed description of the test equipment and testing procedure is presented. Photomicrographs are included to describe the general microstructure. Also included is a discussion of the correlation of total deformation versus time at elevated temperatures using two measuring methods, drawhead movement versus extensometer measurements. The test data revealed that there can be as much as 65 percent error in total deformation reported when measuring creep using drawhead movement of the creep frame instead of using an extensometer fastened firmly to the gage section.