Overview
EN ISO 24034:2020 - Welding consumables - Solid wire electrodes, solid wires and rods for fusion welding of titanium and titanium alloys - Classification (ISO 24034:2020) specifies how to classify solid wire electrodes, solid wires and rods used for fusion welding of titanium and titanium alloys. The classification is based on chemical composition and is applicable across fusion welding processes (MIG, TIG, plasma, laser and other fusion methods) because the same compositions are used for these processes. EN ISO 24034:2020 is the CEN-endorsed version of ISO 24034:2020 and supersedes EN ISO 24034:2010.
Key topics and requirements
- Scope and purpose: Defines the classification system for titanium welding consumables according to chemical composition rather than by process or mechanical properties.
- Product symbol: The symbol for solid wire electrodes, solid wires and rods is S.
- Chemical composition symbols: Numerical symbols (first two digits indicate the alloy group) and optional additional chemical element symbols identify the composition (see Table 1 and Annex A for explanations).
- Uniform composition across processes: Compositions for MIG consumables are the same as those for TIG, plasma, laser and other fusion welding consumables.
- Chemical analysis: Analysis is to be performed on the product or source stock. Any analytical method may be used; in disputes, established published methods agreed by parties should be referenced.
- Rounding rules: Test values are rounded according to ISO 80000-1:2009 (B.3 Rule A); conversions to units of this document should be done before rounding.
- Retest procedures: Failed tests shall be repeated twice; both retests must meet requirements. Chemical retests can be limited to the elements that failed.
- Mechanical properties: Mechanical properties of all-weld metal or welded joints are explicitly not specified within this classification.
- Delivery and designation: The standard includes technical delivery conditions and rules for product designation (see Clause 10 and Clause 11).
Applications and who uses it
This standard is intended for:
- Manufacturers of welding consumables and filler materials for titanium alloys
- Welding engineers and material specifiers creating procurement documents
- Quality and inspection personnel verifying chemical composition and labelling
- Fabricators in industries using titanium (aerospace, chemical processing, medical devices, marine and high-performance engineering)
- Standards bodies and certification organizations aligning national classifications (see Annex B for corresponding national classifications)
Using EN ISO 24034:2020 helps ensure consistent identification, procurement and traceability of titanium welding consumables based on composition, improving compatibility and quality control in critical welding applications.
Related standards
- ISO 544 - Technical delivery conditions for filler materials and fluxes
- ISO 14344 - Procurement of filler materials and fluxes
- ISO 80000-1 - Quantities and units (rounding rules)