## The physical properties of stainless steel

The physical properties of stainless steel are mainly expressed in the following aspects:

①Coefficient of thermal expansion

Changes in the quality of the elements due to temperature changes. The expansion coefficient is the slope of the expansion-temperature curve, the instantaneous expansion coefficient is the slope at a specific temperature, and the average slope between two specified temperatures is the average thermal expansion coefficient. The expansion coefficient can be expressed by volume or length, usually expressed by length.

②Density

The density of a substance is the mass per unit volume of the substance, and the unit is kgm3 or 1bin3.

③Modulus of elasticity

When applying a force to the two ends of the edge per unit length can cause a unit change in the length of the object, the force required per unit area is called the modulus of elasticity. The unit is 1bin3 or Nm3.

④Resistivity

The resistance measured between two opposite faces of a cubic material per unit length, expressed in units of Ω·m, μΩ·cm or (obsolete) Ω (circular mil.ft).

⑤Permeability

The dimensionless coefficient indicates the degree to which a substance is easily magnetized and is the ratio of the magnetic induction intensity to the magnetic field intensity.

⑥Melting temperature range

Determine the temperature at which the alloy begins to solidify and when it has finished solidifying.

⑦Specific heat

The amount of heat required to change the temperature of a unit of matter by 1 degree. In the British system and the CGs system, the specific heat values of the two are the same, because the unit of heat (Biu or cal) depends on the amount of heat required to raise 1 degree per unit mass of water. The value of specific heat in the International System of Units is different from the English or CGS system because the unit of energy (J) is defined by a different definition. The units of specific heat are Btu (1b? 0F) and J (kg? K).

2020-09-09