Unavailability of Bessemer Steels: Bessemer Steel is no longer produced. So why isn't it produced and what do you do when the print says "Bessemer steel"?

The author discusses the Bessemer steel production process and the obsolescence of Bessemer steel. Topics explored include the machinability performance of higher sulfur Bessemer steels, the replacement of the Basic Bessemer process with Basic Oxygen, Open Hearth, and Electric Furnace processes after World War II, and the steel grades which served as substitutes for Bessemer steel due to its commercial unavailability.