Overview
ISO 17927-1:2020 - Welding for aerospace applications - Fusion welding of metallic components - Part 1: Process specification - defines mandatory and recommended process-level requirements for fusion welding used on aerospace hardware. The standard is intended to be used together with the design/engineering authority’s documents or accepted data and covers the fusion welding processes listed in the standard’s Table 1 and the material groups in Table 2.
Keywords: ISO 17927-1, welding for aerospace, fusion welding, aerospace welding standard, WPS, WPQR, TIG, plasma, weld inspection.
Key topics and technical requirements
ISO 17927-1 organizes process requirements across the full welding lifecycle. Major technical topics include:
- Conformance and classification - definitions of conformance criteria and joint classification/inspection levels.
- Quality levels and weldment design - expectations for design compatibility with welding processes.
- Welding Procedure Specification (WPS) and WPQR - preparation, qualification and documentation requirements for WPS and Welding Procedure Qualification Records (WPQR).
- Fabrication and consumables - identification, traceability, storage and handling of filler metals, fluxes and gases.
- Equipment and calibration - requirements for welding equipment condition and calibration to ensure reproducible results.
- Joint preparation and pre-weld treatment - joint geometry, cleaning, protection, preheat and interpass temperature control.
- Welding execution - tack welds, run-on/run-off, shielding, spatter protection, parameter control and in-process correction.
- Inspection, testing and acceptance - visual inspection, non-destructive testing (PT, MT, RT, UT and others), destructive testing, acceptance criteria and recordkeeping.
- Personnel qualifications - requirements for welders, welding operators, welding coordinators and inspection personnel.
- Rework and repair - controlled procedures, allowed attempts and documentation of rework/repair.
- Process-specific requirements - clauses addressing TIG and plasma welding specifics.
- Annexes - example WPQR, WPS templates and preheat/interpass examples (informative).
Practical applications
ISO 17927-1 is used to:
- Develop and qualify welding procedures for aerospace components.
- Produce documented WPS/WPQR records for contract compliance.
- Establish fabrication, inspection and traceability programs that meet aerospace quality and safety expectations.
- Guide NDT planning and acceptance criteria for welded aerospace hardware.
Who should use this standard
- Aerospace OEMs and Tier suppliers
- Welding engineers and process developers
- Quality assurance and production managers
- NDT and visual inspection personnel
- Regulatory and design authorities responsible for aircraft/space hardware integrity
Related standards
- Other parts of the ISO 17927 series (processs/qualification/inspection) and ISO technical committee outputs from ISO/TC 44 (Welding and allied processes) are complementary. Always use ISO 17927-1 in conjunction with the design/engineering authority’s specifications.
Open preview (PDF)Welding for aerospace applications — Fusion welding of metallic components — Part 1: Process specification
