Overview
EN ISO 11125-9:2022 (ISO 11125-9:2021) specifies laboratory test methods for assessing the wear and performance of metallic blast-cleaning abrasives used in preparing steel substrates before application of paints and coatings. The standard defines three procedures to determine the service life (wear/consumption) of virgin metallic blasting media under centrifugal blasting laboratory conditions and includes complementary procedures to evaluate abrasive cleaning effectiveness by measuring transmitted kinetic energy to the substrate.
Key topics and requirements
- Scope: Applies to virgin metallic blasting media in the delivery state tested by centrifugal blasting in laboratory machines.
- Three wear-test procedures:
- 100% breakdown method
- Full wear test (100% replacement method)
- Stabilized consumption test
- Transmitted energy tests: Methods to evaluate abrasive cleaning performance (e.g., transmitted energy at 100% replacement and at full saturation) using the same test machines.
- Test apparatus and parameters: Describes relevant testing machines, sample preparation, preliminary testing, and evaluation principles. Emphasizes that machine design and adjustable parameters affect comparability with field performance.
- Reporting and comparison: Procedures intended for quality inspection, quality control, and comparison of abrasive batches or products under controlled laboratory conditions.
- Normative references: Cross-references other parts of the ISO 11124 and ISO 11125 series and related standards (for example ISO 11124-3/4/5, ISO 11125-1 to -7, ISO 12944-4, ISO 565).
Applications
- Quality assessment of metallic blasting abrasives (shot, grit, cut wire, etc.) for manufacturing and supply control.
- Comparative evaluation of abrasive service life and cleaning efficiency for R&D, product development, and supplier qualification.
- Supporting specification and procurement decisions for abrasive media used in surface preparation prior to painting and corrosion protection.
- Useful for blast equipment manufacturers, test laboratories, coating specifiers, corrosion engineers, steel fabricators, and QA/QC teams involved in surface preparation and protective coating systems.
Who should use this standard
- Abrasive manufacturers and suppliers
- Independent testing and certification laboratories
- Contractors and maintenance teams performing blast-cleaning
- Coating specifiers and corrosion protection engineers
- Procurement and quality managers responsible for abrasive performance and consistency
Related standards
- ISO 11125 series (Parts 1–7) - sampling, particle size, hardness, density, defects, foreign matter, moisture
- ISO 11124 series - specifications for metallic blast-cleaning abrasives
- ISO 12944-4 - surface preparation for corrosion protection
- ISO 565 - test sieves
Keywords: EN ISO 11125-9:2022, metallic blast-cleaning abrasives, wear testing, transmitted energy, centrifugal blasting, abrasive performance, surface preparation, steel substrates.
