AS ISO ASTM 52904:2021 Additive manufacturing一Process characteristics and performance一 Practice for metal powder bed fusion process to meet critical applications

AS ISO ASTM 52904:2021 Additive manufacturing一Process characteristics and performance一 Practice for metal powder bed fusion process to meet critical applications. ISO 13320, Particle size analysis — Laser diffraction methods ISO 13485, Medical devices — Quality management systems — Requirements for regulatory purposes ANSI/ASQC C 1-1996, Specification of General Requirements for a Quality Program’) AS9 100, Quality Management Systems — Requirements for Aviation, Space, and Defense Organizations2) 3 Terms and Definitions 3.1 For the purposes of this document, the terms and definitions given in Specification F2924, ISO/ASTM 52900, lSO/ASTM 52921, Guide E2910, and the following apply. 3.2 ISO and IEC maintain terminological databases for use in standardization at the following addresses: — IEC Electropedia available at http://www.electropedia.org/ — ISO Online browsing platform available at https://www .org/obp 3.3 Definitions: 3.3.1 build programmer person responsible for programming a build including part orientation, part(s) nesting, and the application of critical build parameters. 3.3.2 machine operator person responsible for initiating builds and turning over machines, which includes, but is not limited to, loading feedstock powder, loading build platforms, removing completed builds and routine machine cleaning and filter changes. 3.3.3 recoater blade portion of the machine that comes in contact with and spreads feedstock across the build area. 3.3.3.1 Discussion The recoater blade may also be called a rake, recoater, roller, or brush. 4 PBF Material Identification 4.1 Material covered by this document (that is, powder and consolidated part/PBF machine input and output), shall be identified by specification callouts including, but not limited to, the following: 4.1.1 Alloy designation according to requirements; where no alloy designation exists, the chemical composition shall be listed. 4.1.2 Powder type— Virgin, used, blend or mix. 4.1.3 Surface finish— As built, media blasted, supports removed by machining or manual deburring, in accordance with specification callouts, or any combination of the latter finish types. 4.1.4 Dimensional tolerances— In accordance with specification callouts or PBF machine output capability. NOTE 1— 4.1.3 and 4.1.4 apply to consolidated parts only. 5 Feedstock and Powder Batches 5.1 The material supplier shall package the powder in containers capable of preventing moisture from penetrating the containers. No other materials including desiccant bags, labels, or tags shall be placed inside the containers in contact with the powder. 5.2 All feedstock shall have a certificate of conformance from the material supplier indicating that the feedstock meets the purchase specification requirements. 5.3 Metal powder shall be purchased from an approved material...