Each physical aspect has these physical properties.
|
Name |
Definition |
Symbol |
Standard Metric Units |
|
Density |
Mass per unit volume. |
g/cm^ 3 (grams/cubic centimeter) |
|
|
Young's Modulus |
Indicates modulus of elasticity. Ratio of stress, σ (force/area) to strain, ε (± change in length / original length ); σ = Eε |
E |
Same as for pressure (force/area). gigaPascals (metric) = GPa. |
|
Poisson's Ratio |
A measure of how much a material laterally contracts or expands as a sample of it is stretched or compressed, respectively. |
ν |
|
|
Yield Strength |
The stress at which a given material begins to deform permanently. |
Re (Υ, σ Y) |
megaPascals (metric) = MPa (usually in this range for most engineering materials like steel and other metals) |
|
Ultimate Tensile Strength |
The stress at which a material fails. |
Rm (U, σ U) |
megaPascals (metric) = MPa (usually in this range for most engineering materials like steel and other metals) |
|
Thermal Conductivity |
The amount of heat energy transferred through a material per unit length and per one degree of temperature. |
k |
W/[m*K] (Watts / meter *°Kelvin) (Metric) |
|
Linear Expansion |
Thermal expansion coefficient. A measure of how much a material expands as it is heated. |
α |
10^-6/°K (± change in length / original length *°Kelvin) |
|
Specific heat |
Heat capacity. A measure of how much heat energy a material can store (absorb) per unit of mass per unit of temperature. |
C |
J / [kg*K] (Joules / kilogram*K) |