Sale of imported 301 stainless steel deep drawing cold rolled flat steel strip for deep drawing of complex parts drawing quality carbon structural steel, low-carbon cold-rolled steel. Delivery Status: subject to heat treatment and smooth delivery. The surface condition of the steel strip should be roughened or shiny. Usage: widely in automobiles, tractors and other industrial applications. 3 Introduction The physical properties and other physical materials, as the physical properties including the following three aspects: the melting point, heat capacity, thermal conductivity and coefficient of linear expansion of the thermodynamic properties of the electromagnetic properties, resistivity, conductivity and magnetic permeability, etc., and the Young's Mechanical properties of the modulus of elasticity, rigidity coefficient. These properties are generally considered to be the inherent characteristics of stainless steel, but it can also be affected by factors such as temperature, degree of processing and the magnetic field strength and the like. Often compared to stainless steel and iron, low thermal conductivity, resistance, and linear expansion coefficient and permeability properties depending on the crystal structure of the stainless steel itself varies. Table 4-1 to Table 4-5 lists the martensitic stainless steels, ferritic stainless steels, austenitic stainless steel, the physical properties of precipitation hardening stainless steel and duplex stainless steel main grades. Such as density, melting point, specific heat capacity parameters, thermal conductivity, thermal expansion coefficient, electrical resistivity, magnetic permeability and the longitudinal elastic coefficient. Correlation between physical properties and temperature (1) the specific heat capacity with temperature change to change the heat capacity will be, but the temperature change in the process of a metal structure in the event of a phase change or precipitation, the heat capacity will be a significant change in ratio. (2) the thermal conductivity below 600 ℃, the thermal conductivity of stainless steel is substantially within 10 ~ 30W / (m · ℃) range, as the temperature of the thermal conductivity increased with increasing trend. At 100 ℃, the thermal conductivity of stainless steel from large to small order 1Cr17,00Cr12,2 Cr 25N, 0 Cr 18Ni11Ti, 0 Cr 18 Ni 9,0 Cr 17 Ni 12Mο2,2 Cr 25Ni20.500 ℃ when the thermal conductivity by a large to a small order of 1 Cr 13,1 Cr 17,2 Cr 25N, 0 Cr 17Ni12Mο2,0 Cr 18Ni9Ti and 2 Cr 25Ni20. Thermal conductivity of austenitic stainless steel is slightly lower than the other, compared with ordinary carbon steel, 100 ℃, the thermal conductivity of austenitic stainless steel is about its quarter. (3) linear expansion coefficient in the range of 100-900 ℃, linear expansion coefficient of various types of stainless steel grades of the basic 10ˉ6 ~ 130 * 10ˉ6 ℃ ˉ1, and with increasing temperature showed an increasing trend. Physical properties at low temperatures (1) the size of the thermal conductivity of stainless steel in low temperature thermal conductivity slightly different, but in general is about room temperature thermal conductivity of 50x. As the magnetic flux at a low temperature (flux density) is increased to increase the thermal conductivity. (2) the specific heat capacity at very low temperatures, the specific heat capacity of stainless steel there are some differences. Heat suffer greatly affect the temperature, in the 4k specific heat capacity can be reduced to below room temperature 1/100 specific heat capacity. (3) thermal expansion for austenitic stainless steel, 80k or less in shrinkage (relative to 273K) size is slightly different. Nickel content has a certain influence on shrinkage.