In most materials, the safety margin for compressive stress and bending stress is the same.

Question

Quizplus · Accepted Answer

The safety margin for compressive stress is usually higher than that for bending stress in most materials. This is because the failure mode for compressive stress is usually catastrophic (i.e. sudden and complete), whereas for bending stress it is usually gradual (i.e. cracks develop over time and eventually result in failure). Therefore, a higher safety margin is needed for compressive stress to ensure that there is no catastrophic failure.

In Most Materials, the Safety Margin for Compressive Stress and Bending