ISO 14344:2024

Overview

ISO 14344:2024 - Welding consumables - Procurement of filler materials and fluxes - provides standardized tools for communication between a purchaser and a supplier of welding consumables within formal quality systems (for example, ISO 9001). The document defines how to specify the three procurement elements required for filler materials and fluxes:

• Welding consumable classification (from the applicable consumable standard)
• Lot classification (see Clause 4)
• Testing schedule (see Clause 5)

ISO 14344:2024 is the third edition and replaces the 2010 edition; it refines terms and revises the testing schedules to better support procurement and conformity assessment.

Key topics and requirements

• Lot classification (Clause 4): Defines lot classes for different product types so purchasers and suppliers can agree on sampling and equivalence. Examples of lot groups in the standard include:
  • Solid welding consumables - Lot classes S1 to S5
  • Tubular cored electrodes and rods - Lot classes T1 to T4
  • Covered electrodes - Lot classes C1 to C5
  • Fluxes for electroslag and submerged arc welding - Lot classes F1 and F2
• Testing schedule (Clause 5): A set of selectable testing schedules (Schedule 1 to Schedule 6, also referenced by letters) that determine the scope and frequency of mechanical, chemical and other tests required for lot release and verification. Selection depends on application criticality.
• Certification and documentation (Clause 6): Guidance on certificates and inspection documents commonly used in procurement, including certificate of compliance, certificate of conformance, and Certified Material Test Report (CMTR); references to ISO 10474 and EN 10204 for inspection document types.
• Terms and definitions (Clause 3): Clarifies terms such as heat, dry batch/dry blend, and controlled chemical composition to ensure consistent interpretation in procurement.

Applications and who uses it

ISO 14344:2024 is practical for:

• Procurement managers and buyers specifying filler materials and fluxes
• Welding engineers and inspectors defining acceptance criteria
• Manufacturers of welding consumables to prepare delivery and test documentation
• Quality managers operating ISO 9001-based systems who need repeatable supplier communication and traceability
• Construction, shipbuilding, pressure equipment, and manufacturing sectors where welding integrity and traceability matter

The standard helps ensure that material selection, lot control and testing align with the functional and safety requirements of the welded application.

Related standards

• ISO 544 - Technical delivery conditions for filler materials and fluxes (product types, dimensions, markings)
• ISO 10474 and EN 10204 - Inspection documents and certificate types

Keywords: ISO 14344:2024, welding consumables, procurement, filler materials, fluxes, lot classification, testing schedule, CMTR, ISO 9001.