ISO 10675-1:2021 PDF

Overview

ISO 10675-1:2021 - Non-destructive testing of welds - Acceptance levels for radiographic testing - Part 1: Steel, nickel, titanium and their alloys - defines acceptance levels for indications from imperfections detected by radiographic testing (RT) in butt welds of steel, nickel, titanium and their alloys. The document presumes RT is performed per ISO 17636‑1 (RT‑F / film) or ISO 17636‑2 (RT‑S radioscopy, RT‑D digital detectors) and links radiographic results to weld quality requirements (e.g., ISO 5817).

Key topics and requirements

• Scope and applicability: Acceptance criteria for internal and surface indications in butt welds; can be applied to other weld types or materials if agreed between parties.
• Acceptance levels: Three quality levels (Acceptance level 1, 2, 3) with numeric limits for imperfections such as:
  • Porosity and gas pores (area % A limits, maximum pore diameter d related to weld thickness s)
  • Clustered (localized) porosity
  • Linear porosity (length l and diameter limits)
  • Elongated cavities / wormholes, shrinkage cavities / crater pipes, slag/oxide/metallic inclusions, lack of fusion / lack of penetration
  • Surface imperfections (undercut, excess penetration, root concavity, etc.) with dimension-based limits
• Measurement rules:
  • Use L = 100 mm testing length for summation/percentage calculations (special rule for welds