AMS5559K Steel, Corrosion and Heat-Resistant, Welded Tubing 18Cr - 10.5Ni - 0.40Ti (SAE 30321) Thin Wall, Solution Heat Treated

AMS5559K prohibits unauthorized exceptions (3.7, 4.4.5, 5.2.1, 8.4), updates composition specification (3.1), revises condition (3.2) and fabrication (3.3, 8.2.1, 8.2.2), updates tensile testing minimum size and method update (3.4.1.1, 3.4.1.2, 8.6), revises hydrostatic test method consistent with other committees (3.4.5.1), adds quality and non-destructive test provisions (3.5.6, 4.2.1, 4.4.2, 4.4.3), requires melter identification (4.4), clarifies marking (5.2), allows prior revisions (8.3), and is the result of a Five-Year Review and update of this specification.