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Square and Rectangular Wire — The Good, The Bad, and…

by | Jan 1, 2009 | Articles, Springs Magazine

I have had many discussions in this column about the attributes of non-round wire shapes. Virtually every type of spring design has been formed from square or rectangular material. And, the basic question is: “Why?” What do I gain or lose from using shaped wire?


Round wire will go farther with less stress and set, but will not produce the same rate/force in the same travel. As with most things in the mechanical world, when you gain one attribute, you lose another.

Wire Cross Sections

Three Types of Edges

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