Poisson's ratio of a material is the ratio of unit lateral strain to the unit axial elongation within its elastic limit. The value of Poisson's ratio for structural and pressure vessel steel may be taken as ____________________?
Correct answer: B. 0.3
- A. 0.01
- B. 0.3
- C. 0.75
- D. 0.95
Explanation
Structural and pressure-vessel steels have Poisson's ratio close to 0.3, meaning lateral contraction is about 30% of the axial elastic extension in magnitude. Values near 0.75 or 0.95 are not typical for metals.
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