The value of stress concentration factor depends upon

It depends upon Material and Load

All of the above

AStress concentrations occur when there are irregularities in the geometry or material of a structural component that cause an interruption to the flow of stress. This arises from such details as holes, grooves, notches and fillets.

material and geometry of the part

i think value of stress concentration factor depends upon geametry of the part , because stress concentration comes into picture due to abdrupt change in the geometry of the section .
REQUESTING GOOD EXPLAINATION FROM ANYBODY

A

Theoretical stress concentration factor (kt) is function of loading and geometry while actual concentration factor (kf) also known as fatigue stress concentration factor or fatigue strength reduction factor is function of loading, geometry and material.

A