It can be, depending on the design needs of a part. Since many designs call for plastic or resin materials, the designer may wish to known the limits of a material’s elongation. In general, elongation is the measure of how much strain a material can take before it deforms to the point of breaking or rupturing. Certain designs call for considerable elongation or the ability to absorb energy by deforming plastically. One example is a car bumper.
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