Bellows can be formed from most ductile materials that can be welded by the automatic T.I.G. butt welding process and yield a homogeneous ductile weld structure. Because the specific media content varies from system to system, and most media data specified prior to system operation is approximate with considerable fluctuation possible, it is not feasible to make specific recommendations concerning bellows materials. The following are the four most common bellows materials that are supported by CAESAR II:
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304SS—A240 to 304 Stainless Steel
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316SS—A240 to 316 Stainless Steel
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600Inc—Inco 600 High Nickel
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625Inc—Inco 625 High Nickel