ISO 15614-3:2008 PDF

Overview - ISO 15614-3:2008 (Fusion welding of cast irons)

ISO 15614-3:2008 specifies how a preliminary welding procedure specification (pWPS) for production and repair welding of non‑alloyed and low‑alloyed cast irons is qualified by fusion welding procedure tests. It defines test-piece preparation, execution of welding procedure tests, required examinations (non‑destructive and destructive), acceptance criteria and the range of qualification for practical welding operations. The standard applies to grey, malleable, spheroidal graphite and austempered ductile cast irons (EN 1561, EN 1562, EN 1563, EN 1564) and can be applied when welding cast iron to steel or other similar cast irons.

Key topics and technical requirements

• Qualification of pWPS: How a pWPS is validated by welding procedure tests and which records are required (welding procedure qualification record).
• Test-piece design and welding: Shape, dimensions and preparation of test pieces and representation of production/joint geometry (see Clause 7).
• Welding processes covered: Common fusion processes per ISO 4063 (examples include SMAW/MMA, GMAW/MIG/MAG, GTAW/TIG, plasma, submerged arc and oxy‑fuel welding).
• Examination and testing:
  • Non‑destructive testing (NDT) before specimen extraction - visual inspection (EN 970) and penetrant testing (EN 571‑1) are required.
  • Destructive testing - macroscopic/microscopic examination and tensile tests; additional tests (impact, hardness, radiography, corrosion) may be required by application standards.
• Range of qualification: Rules on how qualified parameters (materials, thicknesses, positions, processes and consumables) may be extended within agreed limits (Clause 9).
• Traceability and records: Procedures for documenting test results and the welder/welding operator qualification obtained through successful procedure testing.

Practical applications - who uses it and why

• Welding engineers and procedure developers use ISO 15614-3:2008 to produce qualified, auditable welding procedures for cast iron components.
• Foundries, fabricators and repair shops perform tests and produce pWPS/PQR documentation to ensure consistent, reliable fusion welding and to meet procurement or regulatory requirements.
• Inspection bodies, quality managers and third‑party certifiers use the standard to verify that welding procedure tests, NDT and destructive tests meet industry practice.
• Useful for repair welding of castings in heavy industry (pumps, gear housings, engine blocks, piping fittings) where cast iron is common.

Related standards

• ISO 15607, ISO 15609‑1 / ISO 15609‑2 (pWPS rules)
• ISO 15611, ISO 15613 (alternative qualification methods)
• EN 1011‑8 (welding of cast irons), EN 1561–1564 (cast iron material standards)
• EN 970, EN 571‑1 (NDT and penetrant testing)

Keywords: ISO 15614-3:2008, welding procedure qualification, fusion welding, cast iron welding, pWPS, welding procedure test.