The minimum Ti calculation for S32100 (321) in ASTM A312 is 5XC. The same calculation for minimum Ti for the same grade in ASTM A240 is 5(C+N). When ASTM A240 was changed from a minimum Ti of 5xC to 5(C+N)in S32100 it was determined that the latter calculation more accurately ensured stabilization. Hence, we propose to change the N minimum in ASTM A312 to 5(C+N).
Keywordsaustenitic stainless steel; seamless steel pipe; stainless steel pipe; steel pipe; welded steel pipe;
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