I am looking for a high strength stainless steel to use for tension rods. The environment is cryogenic, so the material should be austenitic. Standard 304 and 316 grades do not have the strength I need to keep the number of rods to a minimum. I have been looking at XM-19, but it seems to be pretty expensive. Is there a lower cost high strength austenitic stainless steel with a similar yield strength? The rods will be round stock threaded at both ends.
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