ASME PTB-13-2021

(a) These criteria address the construction of pressure retaining component using the AM Powder Bed Fusion process using both Laser and Electron Beam energy sources.
(b) Additively Manufactured components shall meet the requirements of the applicable ASME Construction Code or Standard in addition to these criteria.
(c) Hybrid construction incorporating AM components joined (welded or brazed) to non-AM components is acceptable. Additive manufactured components joined to other AM components or non-AM components shall follow the requirements of the applicable ASME Construction Code or Standard.
(d) The maximum design temperature shall be at least 50°F (25°C) colder than the temperature where time dependent material properties begin to govern for the equivalent wrought ASME material specification, as indicated in ASME Section II, Part D [1].
(e) The materials allowed for use in powder bed fusion under these criteria include:
      (1) austenitic stainless-steel alloys; and
      (2) nonferrous alloys