In engineering, using materials with insufficient yield strength can result in structural failures, while over-specifying materials can lead to unnecessary costs. Balancing safety, performance, and cost requires a clear understanding of yield strength.
Safety: Designing below the yield strength prevents permanent deformation and structural failure.
Longevity: Selecting materials with appropriate yield strength ensures durability under repeated loads and ensures feasibility of long-term investments.
Cost-Effectiveness: Avoiding over-engineering reduces material costs without compromising performance.
The final choice of metals is based on the trade-off between the various parameters of cost-effectiveness and safety.