Hello All, Per ASME Section VIII Division 1 Part UG-84 (H)(2)(b), when Impact testing is required material shall be in the same heat treat condition as the material in fabrication. I understand this completely, however, Per ASME Section IX QW-403.5 (c) Welded plates of different Group numbers in...
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Code Case 2450 regarding using base metal UNS S38815 for pressure vessels in service up to 800 degrees F states:
" Base metal UNS S38815 may be used in construction, the rules...