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Poisson's ratio, typically $\nu$, is a measure of the Poisson effect, the deformation (expansion or contraction) of a material in directions perpendicular to the specific direction of loading.
Most materials have Poisson's ratio values ranging between 0.0 and 0.5 with many typical solids having Poisson's ratios between 0.2 and 0.3. For soft materials, such as rubber, Poisson's ratio is near 0.5. For open-cell polymer foams, Poisson's ratio is near zero.
The values over temperature range have been generated with the help of AI. They have been cross-checked for plausibility using various publications.
| Material | Type | 0°C | 10°C | 20°C | 30°C | 40°C | 50°C | 60°C | 70°C | 80°C | 90°C | Comment |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PE | High-density polyethylene pipe | 0.42 | 0.43 | 0.44 | 0.45 | 0.46 | 0.47 | 0.48 | 0.49 | 0.49 | 0.49 | HDPE: short-term Poisson ratio |
| PP | Polypropylene pipe | 0.41 | 0.42 | 0.43 | 0.44 | 0.45 | 0.46 | 0.47 | 0.48 | 0.48 | 0.48 | PP-H / PP-B, short-term |
| PVC | polyvinylchloride pipe | 0.38 | 0.38 | 0.38 | 0.39 | 0.39 | 0.4 | 0.4 | 0.41 | 0.41 | 0.42 | PVC-U |
| Metal | cast iron steel pipe | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | 0.3 | Steel / cast iron |
| Fibre | glass-reinforced plastic (GRP) pipe | 0.26 | 0.26 | 0.26 | 0.26 | 0.27 | 0.27 | 0.27 | 0.28 | 0.28 | 0.28 | Depends on fibre orientation |
| Earth | vitrified clay pipe (VCP) | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | 0.18 | Brittle ceramic material |
| Cem | concrete tube | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | Unreinforced concrete |