How do carbon steel pressure vessel compare to stainless steel in terms of ease of fabrication?

Carbon steel pressure vessel generally have an easier fabrication process compared to stainless steel pressure vessels, for a few key reasons:

1. Welding: Carbon steel is easier to weld than stainless steel. Stainless steel requires more specialized welding techniques and equipment to achieve high-quality welds that are resistant to corrosion and cracking. Carbon steel can be welded using more common and less expensive welding methods.
2. Machining: Carbon steel is generally softer and more malleable than stainless steel, making it easier to machine, cut, and shape using standard metalworking tools and machinery. Stainless steel is harder and more abrasive, requiring more powerful and specialized machining equipment.
3. Forming: Carbon steel can be more easily bent, rolled, or otherwise formed into the desired pressure vessel shape using standard metal forming techniques. Stainless steel is more resistant to forming and may require specialized hydraulic presses or other equipment.
4. Heat treatment: Carbon steel pressure vessels often do not require extensive heat treatment processes, whereas stainless steel may need solution annealing or other specialized heat treatments to achieve the desired mechanical properties and corrosion resistance.

The tradeoff is that carbon steel pressure vessels may be more susceptible to corrosion in certain environments compared to stainless steel. But in general, the fabrication process for carbon steel pressure vessels is simpler, faster, and less expensive compared to stainless steel. The choice between the two materials depends on the specific application requirements and operating conditions.