Resources, Tools and Basic Information for Engineering and Design of Technical Applications!
mobile - visible on handheld devices - alternatively go to www.engineeringtoolbox.com!
Engineering ToolBox > Bulk Modulus of Metals and Alloys
Bulk Modulus of Elasticity is the ratio of stress to change in volume of a material subjected to axial loading.
| Material | Bulk Modulus (106 psi) |
| Aluminum, various alloys | 9.9 - 10.2 |
| Brass, 70-30 | 15.7 |
| Brass, cast | 16.8 |
| Copper | 17.9 |
| Iron, cast | 8.4 - 15.5 |
| Iron, malleable | 17.2 |
| Magnesium alloy | 4.8 |
| Monel metal | 22.5 |
| Phosphor bronze | 16.3 |
| Stainless Steels 18-8 | 23.6 |
| Steel, cast | 20.2 |
| Steel, cold rolled | 23.1 |
| Steel, various | 22.6 - 24.0 |
Bulk Modulus is related to Modulus of Elasticity and Poisson's Ratio as
K = E / 3 (1-2r) (1)
where
K = Bulk Modulus
E = Modulus of Elasticity
r = Poisson's Ratio