Evaluation of the elastic modulus of steels

Literature data on the physical properties of steels have been collected an d put into a database. The elastic modulus of steels has been analyzed as a function of composition. An overview over former studies is given. The ste els have been investigated in three groups, martensitic and ferritic steels , ferritic steels separately, and austenitic steels. For the last two group s, a thermodynamic analysis with Thermo-Gale has been performed. Regression analysis on the influence of composition on the elastic modulus was then c arried out. The results for ferritic steels reveal that cementite has no ef fect on the elastic modulus, whereas Cr, Mo, Si, Mn, and Cu increase it. Th e elastic modulus of austenitic steels is reduced by Ni and Mo and increase d by N, NbC, TiC, and Cr. Cr23C6, while statistically significant in the an alysis, has no effect on the elastic modulus of austenitic steels, The regr ession coefficients found can be used to predict the elastic modulus of ste els with known composition.