En Iso 15614-7 Pdf [2021] -

EN ISO 15614-7 specifies the requirements for the qualification of welding procedures for overlay welding of metallic materials

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• Welding procedure qualification tests: Describes which mechanical tests are required (tensile tests, bend tests, impact tests where relevant, hardness, macro- and micro-examination) and how test specimens shall be prepared and welded.
• Material grouping and thickness ranges: Defines how base material and filler metal combinations are grouped, the range of thicknesses covered by a single qualified procedure, and limits for applying the qualified procedure to production work.
• Welding positions and joint types: Specifies the positions and joint designs used during qualification and how qualification for one position or joint may be extended to others.
• Essential, supplementary and non-essential variables: Identifies which process variables (e.g., welding current, heat input, shielding gas, travel speed, preheat/interpass temperatures) are essential—changes to which require requalification—and which are permissible without requalification.
• Test specimen details: Provides geometry, extraction locations, and orientation for tensile specimens, bend specimens, and any required impact specimens; includes guidance on macrosections and porosity limits.
• Assessment criteria: Sets acceptance criteria for mechanical properties (e.g., minimum tensile strength, elongation, bend test performance) and permissible discontinuities in macro/microscopic examination.
• Test report and documentation: Lists the required content for qualification records and test reports to support a WPS, including manufacturer, material details, welding parameters, filler metals, and test results.

Parent Material:

The chemical composition and thickness of the base metal. EN ISO 15614-7 specifies the requirements for the

Explaining specific testing requirements

for hardfacing vs. corrosion cladding. Comparing ISO 15614-7 with ASME Section IX standards. Parent Material: The chemical composition and thickness of