Now many seamless pipes are made of stainless steel, such as ferritic stainless steel seamless pipe and tube and austenitic stainless steel seamless pipe. The following analyzes the difference between ferritic stainless steel and austenitic stainless steel from the four parameters of elastic modulus, thermal conductivity, linear expansion coefficient, and density.

Modulus of elasticity: High-performance ferritic stainless steel is slightly larger than high-performance austenitic stainless steel, so the seismic performance of high-performance ferritic stainless steel is slightly stronger than that of high-performance austenitic stainless steel. Vibration occurs, and thin walls are also more conducive to heat transfer.

Thermal conductivity: high-performance ferritic stainless steel is larger than high-performance austenitic stainless steel, so the heat transfer performance of high-performance ferritic stainless steel is better than that of high-performance austenitic stainless steel.

Coefficient of linear expansion: high-performance ferritic stainless steel is closer to the linear expansion coefficient of carbon steel than high-performance austenitic stainless steel, so high-performance ferritic stainless steel deforms due to thermal expansion with less internal stress, and the surface oxide film is due to the difference in thermal expansion coefficient The spalling or cracking caused is small, and it is more suitable for high-temperature cyclic oxidation environment.

Density: High-performance ferritic stainless steel is smaller than high-performance austenitic stainless steel. Under the same volume conditions, high-performance ferritic stainless steel is lighter than high-performance austenitic stainless steel.

These two types of high-performance stainless steel welded pipes have excellent corrosion resistance to various types of corrosion, such as chlorine pitting, steam erosion, stress corrosion, and marine corrosion. Therefore, both types of high-performance stainless steel welded pipes can be used in the condenser of the coastal power station (including polluted seawater).

If you want to know more information, please click the link: manufacturer of  austenitic stainless steel seamless tube.​