The carbon content is the main distinguishing factor between 347 and 347H stainless steel pipes. In the case of 347 pipes, the maximum carbon content is 0.08%, while 347H pipes have a higher carbon content range of 0.04-0.10%. This increased carbon content in 347H pipes contributes to enhanced strength at high temperatures and greater resistance to sensitization, which is the formation of chromium carbides at grain boundaries that can lead to intergranular corrosion.
Because of its higher carbon content, it is generally recommended to use 347H stainless steel pipes for applications involving elevated temperatures and thermal cycling. These pipes exhibit improved resistance to creep and can withstand higher levels of stress compared to 347 stainless steel pipes. Industries such as chemical processing, petrochemical, and power generation commonly employ 347H pipes due to their exposure to high temperatures and corrosive environments.
To summarize, the disparity between 347 and 347H stainless steel pipes rests in their carbon content. 347H pipes offer superior strength at high temperatures and resistance to sensitization. The choice between the two depends on the specific requirements and conditions of the application.
The main difference between 347 and 347H stainless steel pipes lies in their carbon content. 347 stainless steel pipes have a maximum carbon content of 0.08%, while 347H stainless steel pipes have a higher carbon content range of 0.04-0.10%. This higher carbon content in 347H pipes provides improved high-temperature strength and greater resistance to sensitization, which is the formation of chromium carbides at grain boundaries that can lead to intergranular corrosion.
Due to its higher carbon content, 347H stainless steel pipes are typically recommended for applications involving elevated temperatures and thermal cycling. They offer enhanced creep resistance and can withstand higher stress levels than 347 stainless steel pipes. 347H pipes are commonly used in industries such as chemical processing, petrochemical, and power generation, where they are exposed to high temperatures and corrosive environments.
In summary, the difference between 347 and 347H stainless steel pipes lies in their carbon content, with 347H pipes offering improved high-temperature strength and resistance to sensitization. The choice between the two depends on the specific application requirements and operating conditions.
The main difference between 347 and 347H stainless steel pipes lies in their carbon content. 347H has a higher carbon content which provides it with enhanced high-temperature strength and improved resistance to sensitization during welding.
