ISO 11126-10:2025

Overview

ISO 11126-10:2025 specifies the requirements for almandite garnet abrasives used in the preparation of steel substrates before the application of paints and related products. This part of the ISO 11126 series focuses exclusively on non-metallic blast-cleaning abrasives made from almandite garnet, detailing critical properties such as particle size distribution, apparent density, Mohs hardness, moisture content, conductivity, and water-soluble chlorides. These specifications are intended for abrasives in their new, unused condition and are vital for ensuring the quality and safety of surface preparation processes in industrial environments.

The standard provides a framework for manufacturers, suppliers, and end-users to ensure that almandite garnet abrasives meet performance, safety, and cleanliness requirements. Blast-cleaning with almandite garnet is especially relevant for the surface preparation of steelwork and can be applied to other materials and components utilizing abrasive blasting techniques.

Key Topics

• Particle Size Distribution: Defines acceptable ranges and tolerances for garnet abrasive grains to achieve a consistent cleaning profile.
• Apparent Density: Specifies the mass per unit volume, ensuring suitability for blast-cleaning operations.
• Mohs Hardness: Establishes a minimum hardness to guarantee effective cleaning without excessive breakdown of the abrasive.
• Moisture Content: Sets a maximum allowable level to prevent clumping and ensure flowability.
• Conductivity of Aqueous Extract: Limits total water-soluble contamination, helping avoid corrosion of prepared surfaces.
• Water-Soluble Chlorides: Specifies maximum chloride content for optimal corrosion control after surface preparation.
• Product Designation and Marking: Outlines how products should be labeled for traceability and proper identification.
• Safety and Handling: Encourages compliance with health and safety guidelines, especially around potentially hazardous dust and contaminants.

Applications

ISO 11126-10:2025 applies to a variety of industries involved in the protective coating of steel and other materials:

• Industrial Coatings: Ensures effective surface profiling for improved adhesion of paints and protective coatings in manufacturing and infrastructure projects.
• Shipbuilding and Marine: Facilitates corrosion-resistant surface preparation for ships and offshore structures.
• Oil, Gas, and Petrochemical: Used for the maintenance and construction of pipelines, tanks, and structural steel exposed to harsh environments.
• Construction and Bridges: Prepares steel surfaces of bridges, buildings, and civil infrastructure for durable paint systems.
• General Surface Preparation: Also suitable for preparing non-steel surfaces where abrasive blast-cleaning is specified, subject to suitability of garnet properties.

By following the requirements of this standard, users can ensure successful abrasive blast-cleaning processes, leading to improved coating performance, reduced risk of premature coating failure, and compliance with industry and regulatory standards.

Related Standards

ISO 11126-10:2025 is closely linked to several other international standards that cover both testing and application aspects:

• ISO 8504-2: Surface preparation methods - Abrasive blast-cleaning.
• ISO 11126 Series: Specifications for other types of non-metallic blast-cleaning abrasives.
• ISO 11127 Series: Comprehensive test methods for non-metallic blast-cleaning abrasives, including procedures for sampling, determining particle size, density, hardness, moisture, conductivity, and chlorides.
• ISO/TC 35 and CEN/TC 139: Committees responsible for paints, varnishes, and associated substrate preparation methods.

Adoption of ISO 11126-10:2025 contributes to safer, more reliable, and standardized surface preparation practices, helping the global coatings and manufacturing industry maintain high standards of quality and performance.