Category |
Property |
Symbol |
Units (Metric) |
Units (US Customary) |
| General | Density | ρ | kg/m3 | lb/in3 |
| Price | Cm | currency/kg | currency/lb | |
| Shape factor | ϕ | dimensionless | dimensionless | |
| Mechanical | Young's modulus | E | GPa | 106 psi |
| Shear modulus | G | GPa | 106 psi | |
| Bulk modulus | K | GPa | 106 psi | |
| Flexural modulus | Ef | GPa | 106 psi | |
| Poisson's ratio | n | dimensionless | dimensionless | |
| Failure strength (yield, fracture) | σy | MPa | ksi | |
| Fatigue strength | σe | MPa | ksi | |
| Compression strength | σc | MPa | ksi | |
| Flexural strength (modulus of rupture) | σf | MPa | ksi | |
| Hardness | H | Vickers | Vickers | |
| Fracture toughness | K1c | MPa.m1/2 | ksi.in1/2 | |
| Loss coefficient (damping capacity) | η | dimensionless | dimensionless | |
| Thermal | Thermal conductivity | λ | W/m.K | BTU.ft/h.ft2 |
| Thermal diffusivity | a | m2/s | ft2/s | |
| Specific heat | Cp | J/kg.K | BTU/lb.F | |
| Thermal expansion coefficient | a | K-1 | °F-1 | |
| Difference in thermal conductivity | Δa | K-1 | °F-1 | |
| Electrical | Electrical resistivity | ρe | μΩ.cm | μΩ.cm |
| Dielectric constant (relative permittivity) | εr | dimensionless | dimensionless | |
| Dissipation factor (dielectric loss tangent) | tan δ | dimensionless | dimensionless | |
| Eco-properties | Energy required per unit mass to produce material (embodied energy) | Hm | MJ/kg | kcal/lb |
| CO2 footprint (CO2 mass produced per unit mass of material produced) | CO2 | kg/kg | lb/lb | |
| Diffusion | Oxygen permeability | PO2 | cm3.mm/(m2.day.atm) | cm3.mm/(m2.day.atm) |
| Water vapor transmission rate | VTR | g.mm/(m2.day) | g.mm/(m2.day) |