1. Specific heat capacity varies along with temperature variation. If the phase change or sedimentation takes place within metal, its specific heat capacity will change remarkably.
2. Under 600℃, thermal conductivities of various stainless steels are within 0~30W/( m?℃), and may slightly go up with the rise of temperature. At 100℃, the followings are several stainless steels listed from the highest to the lowest thermal conductivities, namely, 1Cr17, 00Cr12, 2 Cr 25N, 0 Cr 18Ni11Ti, 0 Cr 18 Ni 9, 0 Cr 17 Ni 12Mο2 and 2 Cr 25Ni20. At 500℃, the sequence is 1 Cr 13, 1 Cr 17, 2 Cr 25N, 0 Cr 17Ni12Mο2, 0 Cr 18Ni9Ti and 2 Cr 25Ni20. Austenitic stainless steel is lower than other stainless steels in thermal conductivity. At 100℃, its thermal conductivity is approximately a quarter of that of common carbon steel.
3. At temperatures of 100 to 900 degree Centigrade, most stainless steels’ coefficients of linear expansion are within 10ˉ6~130*10ˉ6℃ˉ1, and proportional to temperature. The coefficient of a precipitation hardening stainless steel sanitary valve depends on machining temperature.
4. In 0~900℃, the resistivities of most stainless steels are 70*10ˉ6~130*10ˉ6Ω·m, and temperature dependent. The types with low resistivities are suitable to exothermic materials.
5. The permeability of austenitic stainless steel is minimal, so it is called non magnetic material. Austenitic stainless steel, like 0 Cr 20 Ni 10 and 0 Cr 25 Ni 20, will never be magnetic.
6. The longitudinal elastic moduli of ferrite stainless steel and austenitic stainless steel are respectively 200kN/mm2 and 193 kN/mm2.
7. The density of ferrite stainless steel with high chromium content is low, and that of austenitic stainless steel with high nickel and manganese is high.