This paper describes the results of test on elastic-plastic-creep behavior of a 12-in. Sch. 20 type 304 stainless steel elbow-pipe assembly subjected to in-plane moment loading at 600°C (1112°F). During the test, loads at seven different levels were applied to the specimen. In each stage of the test, the load, deflection, strains at specific locations, and ovalization of the cross section were measured. The results were compared with Spence’s theoretical predictions on the stationary creep behavior of smooth curved pipes and the inelastic solutions obtained by the MARC finite element analysis program.

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