SIST EN ISO 15792-2:2020 PDF

Overview

EN ISO 15792-2:2020 - "Welding consumables - Test methods - Part 2: Preparation of single-run and two-run technique test pieces and specimens in steel" - specifies how to prepare butt-weld test pieces and specimens used to determine the strength and impact properties of welded joints when testing welding consumables for arc welding of steel. It applies to single-run and two-run techniques and is not suitable for electro‑slag or electro‑gas welding.

Key topics and requirements

• Scope: Preparation of butt weld test pieces for testing welding consumables (arc welding of steel); excludes electro‑slag/gas methods.
• Test-piece types: Several standardised test-piece configurations (types 2.1–2.6) with defined plate thicknesses, bevels and tolerances to represent single-run and two-run techniques.
• Material: Test plate material shall follow the relevant consumable classification standard.
• Assembly & preparation:
  • Plates must be preset/restrained to produce a flat welded test piece; the welded assembly shall not be straightened afterwards.
  • Backing systems and run‑on/run‑off plates are permitted for single‑run technique.
  • If thermal cutting is used, provide at least 10 mm machining allowance on either side.
• Welding conditions:
  • Welding performed in the flat position.
  • Start at room temperature or after required preheating; interpass and preheat temperatures measured (e.g., thermocouples, crayons) and controlled per consumable standard.
  • Welding parameters (current, voltage, travel speed, bead size) must be within manufacturer recommendations and, for classification, within the consumable standard limits.
• Heat treatment:
  • All required heat treatments (except hydrogen-removal) applied to completed test piece or sections with machining allowance.
  • Hydrogen removal may be done before or after final machining; may be held ≤250 °C for up to 16 h.
• Specimen location & dimensions:
  • Positions for notched impact specimens, transverse tensile and all-weld-metal tensile specimens shown in figures; follow ISO 9016, ISO 4136 and ISO 5178 for specimen geometry and testing.
  • Typical impact specimen sizes: 10 × 10 mm (subsize 5 × 10 mm where applicable).

Applications

• Classification and performance testing of welding consumables (fluxes, electrodes, tubular cored wires) intended for arc welding of steel.
• Laboratory test programs to determine weld metal tensile strength and impact toughness for product datasheets, conformity assessment and R&D.
• Defining consistent specimen preparation for comparative testing across manufacturers and test houses.

Who should use this standard

• Welding consumable manufacturers and product development teams
• Independent test laboratories and certification bodies
• Quality, welding and metallurgical engineers involved in consumable selection and validation
• Standards committees and technical assessors preparing conformity reports

Related standards

• ISO 4136 - Transverse tensile test on welds
• ISO 5178 - Longitudinal tensile test on weld metal
• ISO 9016 - Impact tests - specimen location and notch orientation
• ISO 13916 - Temperature-measurement guidance for preheat/interpass

Using EN ISO 15792-2:2020 ensures reproducible preparation of butt-weld test pieces for reliable evaluation of welding consumables under single‑run and two‑run welding techniques.