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This document is a collection of comments on topics relevant to AMS powder feedstock production and procurement. In some instances it provides explanation of characteristics not controlled in AMS-AM powder feedstock specifications and the rationale for exclusion (e.g. limitation of applicability or maturity of standardized inspection techniques). In other cases it provides additional context on the reason for structuring requirements in AMS documents one way instead of other available options.

This specification covers use of the Laser-Wire Deposition process to additively manufacture Titanium 6Al4V products, with anneal and age post-processing.

This specification covers an aluminum alloy in the form of pre-alloyed powder.

Aluminum powder to be used in additive manufacturing for aerospace and defense purposes.

Specification of a high strength aluminum alloy for production of aerospace components using AM processes

Aluminum alloy powder developed for the LPBF process for aerospace components

Aluminum alloy powder developed for laser powder bed fusion (LPBF) processes for aerospace components.

This specification prescribes process requirements for batch processing of used, metal powder originating from an existing additive manufacturing process workflow for reuse in subsequent additive manufacturing of aerospace parts in non-closed loop additive manufacturing machines. Such powders may be pre-alloyed or commercially pure. This specification is not limited to a specific additive manufacturing process workflow as the originating source of material to be reused. It is intended to define those procedures and requirements necessary to achieve required cleanliness and performance of metal powder feedstock to be reintroduced into the same additive manufacturing process from which such powder originated. This specification is intended to be used in conjunction with relevant AMS powder specifications and AMS process specifications for additive manufacturing.

Child aerospace materials specification describing process control documentation requirements outlined in AMS7022 to establish material properties and their associated acceptance criteria of binder jetted, debound, sintered, solution heat treated, and aged 17-4 PH precipitation hardenable stainless steel parts and preforms. This document describes specific properties resultant of the Desktop Metal Production System P-1 and its unique key process variables. Parts may require subsequent machining or surface finishing to meet specific application requirements.

Parent aerospace materials specification describing common material requirements of binder jetted, debound, sintered, solution heat treated, and aged 17-4 PH precipitation hardenable stainless steel parts and preforms. This document describes shared properties across other child, slash-sheet part specifications for the same alloy and additive manufacturing modality.

This specification establishes process controls for the repeatable production of sintered parts by binder jet additive manufacturing (BJAM). It is primarily intended to be used to manufacture metallic or ceramic aerospace parts, but usage is not limited to such applications.

Parts made using Binder Jet Additive Manufacturing (BJAM) using 4130 steel powder that is used in the as-sintered condition for medium strength and weldability

4130 steel parts made using binder jet additive manufacturing (BJAM) that has been austenized, quenched, and tempered for high-strength.

4130 steel parts made using binder jet additive manufacturing (BJAM) that have been austenized, quenched, and tempered for high-strength. Additionally, they were HIPped prior to austenizing for improved fatigue resistance.

Process specification for arc wire directed energy deposition (AW-DED) process.

This specification establishes process controls for the repeatable implementation of the Cold Spary Additive Manufacturing (CSAM) process for the manufacturing of metallic and metal-non-metal blend components. It is intended to be used for aerospace parts (preforms) manufactured using Additive Manufacturing (AM) metals and metal-non-metal blend materials, but usage is not limited to such applications.

This specification prescribes process requirements for the operation of an additive manufacturing machine or ancillary apparatus to maintain continuous, closed-loop powder handling and reconditioning of used, metal powder for reuse in subsequent additive manufacturing of aerospace parts. Such powders may be pre-alloyed or commercially pure. This specification is not limited to a specific additive manufacturing process workflow that both generates used powder and consumes reuse powder. It is intended to define those procedures and requirements necessary to achieve required cleanliness and performance of metal powder feedstock when continuously used and processed within the same additive manufacturing process and equipment. This specification is intended to be used in conjunction with relevant AMS powder specifications and AMS process specifications for additive manufacturing.

Form This specification covers a moderate-to-high conductivity and strength copper alloy and improved wear resistance in the form of pre-alloyed powder. Application This powder has been used typically as feedstock in additive manufacturing of components. Material properties are influenced by the additive manufacturing process and subsequent heat treatment, see the final material specification for application guidance.

This specification establishes process controls for the repeatable production of aerospace parts by EB-DED-Wire. It is intended to be used for metal aerospace parts produced by additive manufacturing (AM), but usage is not limited to such applications.

This specification establishes process controls for the repeatable production of aerospace parts by Electron Beam Powder Bed Fusion (EB-PBF). It is intended to be used for aerospace parts manufactured using additive manufacturing (AM) metal alloys, but usage is not limited to such applications.