In NACE MR0175, is UNS S41425 sulfur resistant in Table A.18?
Material grade S41425 is listed as not being sulfur resistant in Table A.18 — “Environmental and materials limits for martensitic stainless steels used for any equipment or components”, ANSI/NACE MR0175/ISO 15156-3:2015(E). For the column ‘Sulfur resistant?’, it says ‘No’. I wanted to confirm that was indeed a correct designation, and not an error.
(MP INQUIRY #2016-13)
No and it is not a misprint.
This question is in relation to NACE MR0175/ISO 15156-3 A.6.2 Table A.18
Reference: ISO 15156 Maintenance Panel Inquiry #2016-13