What are factor of safety for brittle and ductile materials.

For brittle material ,ultimate strength use to determine the factor of safety but on the other hand for ductile material yield strength use to determine the factor of safety.

Explanation:

Factor of safety:

  When materials are subjected to stress then we have to prevent it from a failure so we multiple stress by a factor and that factor is called factor of safety.

Factor of safety can be given as

Factor of safety is not a fixed quantity is varies according to the situation.

For brittle material ,ultimate strength use to determine the factor of safety but on the other hand for ductile material yield strength use to determine the factor of safety.

We know that brittle material did not shows any yield point and gets break without showing a indication but  ductile materials shows a yield point and gives indication before fracture.

answer:

my guess it 8 i'm probably wrong