Comment on “High-temperature mechanical and fatigue properties of cast alloys intended for use in exhaust manifolds” by Ekström et Al. (Mater. Sci. Eng. A 616 (2014) 78)

This letter attempts to comment on the article by Ekstrِm et al. [Mater. Sci. Eng. A 616, (2014) 78] in the aspects of elongation at room temperature, thermal conductivity, and microstructure of SiMo iron.