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This standard has notes/guidance narratives interspersed throughout. These notes/guidance narratives are identified by a header and by text in italics. This standard defines a series of requirements that results in a specific AM machine qualified to produce material (see GN1) in compliance to an aerospace materials specification. The machine control and/or configuration types are discussed in the next sections. The industry (including AIA and ASTM) generally acknowledges that there are three qualification milestones for AM machines; nevertheless, this document will focus only on the initial two stages, namely: Installation Qualification (IQ): Producing objective evidence to show that all key aspects of the process equipment and ancillary system installation adhere to the AM Part Producer’s specification and that the recommendations of the supplier of the equipment are suitably considered; this is tied to a specific machine serial number.

This specification is to prescribe process requirements for production (from raw materials through preparation for shipment, see 8.6) of metal powder feedstock for use in additive manufacturing of aerospace parts. This specification covers requirements for the production of metal powder for use as feedstock in additive manufacturing. Such powders may be pre-alloyed or commercially pure. This specification is not limited to a specific powder production method. It is intended to define those procedures and requirements necessary to achieve required cleanliness and performance of metal powder feedstock to be used in the manufacture of aerospace parts. This specification is intended to be used in conjunction with AMS powder specifications for additive manufacturing.

This SAE Aerospace Recommended Practice (ARP) outlines a development, design/repair, and industrial guidance for systems using additive manufacturing (AM) to respond to aircraft requirement specifications. These recommendations reflect procedures that have been effective for designing/repairing metallic alloy components.

The intended upper bound of this specification is that the particle size distribution (PSD) of powders supplied shall be <60 mesh (250 microns) and that no powder (0.0 wt.%) greater than 40 mesh (425 microns) is allowed.

This specification covers a heat-resistant gamma titanium aluminide alloy in the form of pre-alloyed powder.

This specification covers particle size classifications and corresponding particle size distribution requirements for metal powder feedstock conforming to a classification.

This specification covers a heat-resistant titanium alloy in the form of pre-alloyed powder.

This specification covers preforms fabricated up through 5.5 inches (140 mm) inclusive in deposition width thickness (see 8.2.5) using a Plasma Arc Directed Energy Deposition (PA-DED) additive manufacturing process on a Ti-6Al-4V substrate that are subjected to post-deposition stress relief heat treatment. This is a wire fed additive manufacturing process. If required by the CEO, preforms may require subsequent machining to meet requirements for their intended final part application.

The intended upper bound of this specification is that the particle size distribution (PSD) of powders supplied shall be <60 mesh (250 µm) and that no powder (0.0 wt.%) greater than 40 mesh (425 µm) is allowed.

This specification is to prescribe process requirements for production of metal powder feedstock for use in additive manufacturing of aerospace parts.

This specification covers metal products fabricated by direct metal deposition.

This specification covers metal products fabricated by laser deposition.