Physicochemical Mechanical Properties Of Stainless Steel

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

①.Thermal expansion coefficient: changes in material quality 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.

②. Density: The density of a substance is the mass of the substance per unit volume, and the unit is kg/m³.

③.Modulus of elasticity: When the force applied to the two ends of the rib per unit length can cause the unit change in the length of the object, the force required per unit area is called the modulus of elasticity. The unit is N/㎡.

④. Resistivity: The resistance measured between the two opposite sides of the cube material per unit length, expressed in Ω·m or Ω·m㎡/m.

⑤. Magnetic permeability: dimensionless coefficient, indicating the degree to which the material is easily magnetized, and is the ratio of the magnetic induction intensity to the magnetic field intensity.

⑥. Melting temperature range: Determine the temperature at which the alloy begins to solidify and solidifies.

⑦. Specific heat capacity: the heat required to change the temperature of a unit mass of a substance by 1 degree. The specific heat capacity is the same value in both the imperial and CGs systems because the unit of heat (Biu or cal) depends on the amount of heat required to raise a unit mass of water by 1 degree. The value of specific heat capacity in the SI system is different from the imperial or CGS system because the unit of energy (J) is defined differently. The unit of specific heat capacity is J/(kg·°C).

⑧. Thermal conductivity: A measure of the rate at which a material conducts heat. When a temperature gradient of 1 degree per unit length is established on the material of unit cross-sectional area, then thermal conductivity is defined as the heat conducted per unit time, and the unit of thermal conductivity is W/(m·K).

⑨. Thermal diffusivity: It is a property that determines the forward rate of temperature inside the material. It is the ratio of thermal conductivity to the product of heat capacity and density. The unit of thermal diffusivity is expressed in ㎡/s.