Overview
EN ISO/ASTM 52943-2:2024 - Additive manufacturing for aerospace - Process characteristics and performance - Part 2: Directed energy deposition using wire and arc - specifies requirements for producing metallic aerospace parts by directed energy deposition (DED) using wire feedstock and arc energy sources (MIG/MAG/GMAW, TIG/GTAW, PAW). It is intended to be used together with engineering documents (as required by the engineering authority) and focuses on process capability, qualification and documentation. The standard explicitly does not address health and safety.
Key topics and requirements
This standard defines process, qualification and documentation requirements relevant to DED-Arc (wire and arc) in aerospace:
- Feedstock requirements - expectations for wire material traceability and suitability for aerospace DED.
- Operator and machine qualification - criteria for operator certification and machine qualification/requalification to ensure repeatable performance.
- Procedure qualification - use of a preliminary additive procedure specification (pAPS) and a qualified additive procedure specification (APS) addressing key process variables (KPVs) that affect metallurgical, mechanical and dimensional outcomes.
- Build platform / substrate - requirements for substrates and interfaces between deposited material and fixtures or retained substrates.
- Environment requirements - facility and process environment controls (e.g., gas supply referencing ISO 14175).
- Process monitoring & product acceptance - monitoring approaches and acceptance testing to demonstrate conformity to aerospace requirements.
- Documentation & traceability - build documentation, manufacturing records, and delivery documentation needed for airworthiness and quality control.
- Requalification & engineering authority - procedures for requalification and the role of the engineering authority in defining applicable engineering documents.
Keywords embedded: EN ISO/ASTM 52943-2:2024, directed energy deposition, DED-Arc, wire and arc, MIG MAG GMAW, TIG GTAW, plasma arc PAW, additive manufacturing aerospace.
Applications and users
Typical users and practical applications include:
- Aerospace OEMs and suppliers implementing wire-and-arc DED for structural repairs, near-net-shape fabrication, build-up of features, or large component manufacture.
- Process engineers and metallurgists developing APS/pAPS and defining key process variables (KPVs).
- Quality engineers, inspection teams and certification bodies responsible for machine/operator qualification, process monitoring, product acceptance testing, traceability and documentation.
- Machine manufacturers and system integrators validating equipment for aerospace DED-Arc applications.
Related standards
Relevant referenced documents to consult alongside EN ISO/ASTM 52943-2:2024:
- ISO/ASTM 52900 - Additive manufacturing vocabulary and fundamentals.
- ISO/ASTM 52926-5 - Qualification of operators for DED-Arc.
- ISO 14175 - Welding gases (for arc shielding).
- ISO 15614 series - Procedure qualification guidance.
- ISO 24394 - Engineering authority concepts.
This standard provides a structured, traceable framework to qualify and control wire-and-arc DED processes for aerospace use, supporting consistent production and airworthiness documentation.