The composition of their alloys is the main distinction between 321 and 347 stainless steel pipes. Both grades of stainless steel are titanium-stabilized to prevent the formation of harmful chromium carbides when exposed to high temperatures. However, 347 stainless steel contains additional columbium (niobium), which enhances its resistance to intergranular corrosion. This makes 347 stainless steel pipes suitable for applications that involve exposure to high temperatures and corrosive environments, such as in the petrochemical industry or exhaust systems. On the contrary, 321 stainless steel pipes exhibit excellent resistance to oxidation and scaling at elevated temperatures, making them ideal for applications that require continuous exposure to high heat, like in aircraft exhaust systems or furnace parts. Ultimately, the choice between 321 and 347 stainless steel pipes depends on the specific requirements of the application, with 347 offering superior intergranular corrosion resistance and 321 providing better oxidation resistance.
The main difference between 321 and 347 stainless steel pipes lies in the composition of their alloys. Both stainless steel grades are stabilized with titanium, which prevents the formation of harmful chromium carbides at high temperatures. However, 347 stainless steel contains additional columbium (niobium) which provides enhanced intergranular corrosion resistance. This makes 347 stainless steel pipes suitable for applications where exposure to high temperatures and corrosive environments is expected, such as in the petrochemical industry or in exhaust systems. On the other hand, 321 stainless steel pipes offer excellent resistance to oxidation and scaling at elevated temperatures, making them ideal for applications involving continuous high heat exposure, such as in aircraft exhaust systems or furnace parts. Overall, the choice between 321 and 347 stainless steel pipes depends on the specific requirements of the application, with 347 offering superior intergranular corrosion resistance and 321 providing better oxidation resistance.
The main difference between 321 and 347 stainless steel pipes lies in their composition. While both grades contain similar amounts of elements such as chromium and nickel, 321 stainless steel contains the addition of titanium, which stabilizes the material against chromium carbide precipitation during welding. On the other hand, 347 stainless steel contains the addition of niobium, which also helps to prevent carbide precipitation and provides enhanced resistance to intergranular corrosion. Therefore, the choice between 321 and 347 stainless steel pipes will depend on the specific application and the desired level of resistance against carbide precipitation and intergranular corrosion.
