ISO 7054:2024

Overview

ISO 7054:2024 - Corrosion of metals and alloys: Wiping method for measurements of gases and particles on real structures and equipment - defines a standardized, field‑compatible wiping technique to collect and quantify depositions (gases, airborne salts, particles) from real surfaces. The standard delivers a practical way to obtain instantaneous deposition concentrations expressed as mass per unit area (no time component). These deposition data help assess environmental factors that drive corrosion and degradation of metals, alloys, coatings, concretes and other structural materials.

Key topics and technical requirements

• Scope and applicability: Measurement on metals and their alloys, metallic and organic coatings, concrete and other structural materials on real equipment and structures.
• Wiping procedure: Defined steps for preparing sampling media (gauze, cotton or sponge), using frames or masking tape to delimit area, and precautions to avoid contamination.
  • Typical sampling media sizes/masses referenced in the standard: gauze (100–500 mm × 100–500 mm), cotton (1 g–10 g), sponge (100–300 mm × 100–300 mm × 10–30 mm).
• Preparation and handling: Cleaning of tools (boiling then rinsing with distilled/deionized water), use of gloves/tweezers and area‑defining frames to ensure repeatable sampling.
• Analysis methods: Guidance for extracting soluble and insoluble depositions and measuring concentrations using:
  • Detector tube methods
  • Ion chromatography
  • Other laboratory or field analysis devices for soluble species
  • Methods for insoluble deposition quantification
• Results expression and reporting: Concentrations reported as mass per unit area (soluble and insoluble), with defined units and test report content.
• Target analytes: Water‑soluble salts (including chloride ion, sulfate ion and other ions) plus insoluble particles and gas‑related residues that affect corrosivity.

Practical applications

• Rapid, low‑cost environmental assessment to prioritize corrosion control and maintenance.
• Verification of surface contamination on bridges, industrial plants, marine structures, power and solar installations, electronics housings, insulators and painted surfaces.
• Support for maintenance planning: determining wash cycles, coating inspection intervals, and replacement criteria.
• Evaluating local deposition patterns (by site, season, or component) to identify synergistic or antagonistic effects accelerating corrosion (e.g., chloride + moisture).

Who should use ISO 7054:2024

• Corrosion engineers and asset integrity teams
• Maintenance managers and facility owners (infrastructure, petrochemical, marine, energy)
• Coatings specifiers and surface‑preparation contractors
• Environmental and materials testing laboratories
• Structural and concrete inspectors assessing chloride penetration risks

Related standards

• ISO 8502 series (ISO 8502-2, -5, -6, -9) - field and laboratory methods for chloride and water‑soluble contaminants on steel surfaces
• ISO 9225, ISO 11844 series, ISO 8044 - atmospheric corrosivity and terminology
• ISO 3696 - water for analytical laboratory use

Keywords: ISO 7054:2024, wiping method, deposition measurement, corrosion of metals and alloys, chloride ion, ion chromatography, environmental assessment, surface contamination.