Seams are longitudinal voids opening radially from the bar section in a very straight line without the presence of deformed material adjacent. They are most frequently encountered of all imperfections/ defects due to so many possible causes.
Austenitic Grain size, like Chemistry, can affect the machining and other performance of steel in your shop. 5 effects of Coarse Austenitic Grain Size are described.
Adequate stock removal in machining, Eddy current testing, and adjusting order to reflect cold work application are important steps to maximize good part yield and minimize cracking due to post machining cold work.