 The casting equipment and the metal dies represent large capital costs and this tends to limit the process to high @-@ volume production . Manufacture of parts using die casting is relatively simple , involving only four main steps , which keeps the incremental cost per item low . It is especially suited for a large quantity of small- to medium @-@ sized castings , which is why die casting produces more castings than any other casting process . Die castings are characterized by a very good surface finish ( by casting standards ) and dimensional consistency . 
