Structures are often designed with a safety factor to ensure that they can withstand external loads or environmental factors without failure. This safety factor is typically expressed as a ratio between the maximum load a structure can bear and the expected load it will experience during use. One way to achieve this safety factor is by selecting a material with a yield strength higher than the minimum required level of strength.
Yield strength is an important property of a material that determines its ability to withstand stress and deformation without permanent damage. The guaranteed value of the yield strength is typically provided by the manufacturer and is based on standardized testing methods. Engineers can use these values to determine the appropriate material for a given application and ensure that the desired safety factor is achieved. However, it is important to note that other factors such as the required safety margin against failure due to the loads, manufacturing defects, material degradation, and unexpected loads should also be considered in the design process.