When designing large structural components it’s critical to make an informed decision between castings and forgings. The following paper by Rexnord provides an in-depth examination.
Abstract from the May 2007 Gear Solutions article by Tim Zwirlein
Material selection is one of the most crucial decisions made in the design, manufacture, and application of large structural components. Material selection naturally influences the entire performance of the design, and thus it is critical that informed decisions are made during the design stage. Steel castings and steel forgings are two alternatives for large structural components. For many design engineers it is often assumed that a forging is a better product because it is formed or worked during the manufacturing process. It also assumed that castings are inferior because they may contain porosity. Nothing could be further from the truth. Each process has its advantages and disadvantages. It is just as possible to produce an inferior product whether it is a forging or a casting. This paper will present an honest evaluation of castings and forgings, so that those in the design community can make an informed choice.Read More