AMS5578H Steel, Corrosion- and Heat-Resistant, Welded Tubing 12Cr - 8.5Ni - 0.30Cb - 1.1Ti - 2.0Cu Vacuum Induction Plus Consumable Electrode Vacuum Melted Solution Heat Treated, Precipitation Hardenable

AMS5578H is the result of a Five-Year Review and update of this specification. The revision prohibits unauthorized exceptions (see 3.9, 4.4.5, 5.2.1, and 8.5), updates composition testing and reporting (see 3.1 and 3.1.1), revises condition and fabrication requirements (see 3.3 and 3.4) updates tensile testing (see 3.6.1), revises inspection (see 3.7), adds NDT acceptance testing (see 4.2.1 and 4.4), clarifies tolerances and identification (see 3.8 and 5.2), adds country of origin requirement (see 4.4), adds definition of new term (see 2.3), and allows prior revisions (see 8.4).