The economic requirement of parts is to manufacture parts that meet technical requirements with lower cost and less labor hours. This has a close relationship with the processability of parts, and to a large extent affects the economic efficiency of machinery.

Measures such as reducing material consumption, using less or no surplus blanks, replacing expensive materials with cheap materials, using high-quality and expensive materials only at key parts of the part, and using standard parts as much as possible can be taken to improve the economy of the part.