I think they mean the XCR tubing per se, not stainless steel as a whole. XCR is seamless (unlike 953) and therefore quite hard to make (I assume). I guess demand for it is pretty low as well.
@Regal started
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I think they mean the XCR tubing per se, not stainless steel as a whole. XCR is seamless (unlike 953) and therefore quite hard to make (I assume). I guess demand for it is pretty low as well.