Tensile Properties Of Sa 516 Grade 55 Steel In Temperature Range Of 25 Sup 0 To 927 Sup 0 C And Strain Rate Range Of 10 Sup 4 To 10 Sup 1 Sec Sup 1

Tension test results are presented including stress-strain curves obtained in the temperature range of 25 to 927/sup 0/C (75 to 1700/sup 0/F) from specimens of SA 516 (Grade 55) steel, a low carbon pressure vessel steel recommended for cell liners in liquid metal fast nuclear reactors. The tensile properties and stress-strain curves at very high temperatures are required in the analysis and design and in the post-accident integrity analysis of the cell-liners. The values of properties such as yield strength, ultimate tensile strength, reduction in area and total elongation are presented at various test temperatures. Functional relationships between the above properties and test temperature are also presented. In the wide range of temperatures and strain rates at which the tests were performed it was found that the material exhibits dynamic strain aging at temperatures up to about 315/sup 0/C resulting in increased tensile strength and uniform elongation with impaired reduction in area and total elongation. At temperatures above 315/sup 0/C the material gradually loses tensile strength. The strain rate effects on tensile properties are significant and become pronounced at elevated temperatures.