EngiRef / Mechanical Engineering Formula
Factor of Safety
Factor of Safety: Ratio of yield strength to working stress. A Machine Design formula in mechanical engineering. Variables FS, Sᵧ and σ, each with SI and…
Machine Design
Specification
- Name
- Factor of Safety
- Discipline
- mechanical
- Category
- Machine Design
- LaTeX
- FS = \frac{S_y}{\sigma}
- Description
- Ratio of yield strength to working stress
- Can solve for
- FS, Sᵧ, σ
- Tags
- safety, factor, yield, design
Variables
| Symbol | Name | Unit | Si Unit | Imperial Unit |
|---|---|---|---|---|
| FS | Factor of Safety | - | - | - |
| Sᵧ | Yield Strength | Pa | Pa | psi |
| σ | Working Stress | Pa | Pa | psi |
Common questions
- What is the Factor of Safety formula?
- Ratio of yield strength to working stress. It sits under Machine Design, Mechanical engineering in the EngiRef reference.
- What do the symbols in the Factor of Safety formula mean?
- In Factor of Safety, FS is factor of safety; Sᵧ is yield strength in Pa; σ is working stress in Pa.