SIST EN 13523-24:2017

Overview

SIST EN 13523-24:2017 is an essential European standard that outlines test methods for assessing the resistance to blocking and pressure marking in coil coated metals. Developed by the Slovenski inštitut za standardizacijo (SIST) and harmonized with EN 13523-24:2017, this document is a crucial part of the broader EN 13523 series, which focuses on the quality and performance testing of organic coatings on metallic substrates such as steel and aluminum.

This standard’s primary purpose is to define a procedure for evaluating how well an organic coating on a metal substrate withstands sticking (blocking) and imprints (pressure marking) when stored under pressure. Ensuring resistance to blocking and pressure marking is vital for manufacturers of coil coated metals to maintain product quality during storage, transport, and fabrication.

Key Topics

• Test Procedures: Specifies step-by-step methods, including sample preparation, apparatus requirements, test conditions (pressure, temperature, duration), and evaluation techniques.
• Blocking and Sticking Assessment: Provides a rating scale (0-4) to quantify how easily coated panels separate after being pressed together, ranging from no sticking to panels that cannot be separated.
• Pressure Marking Evaluation: Defines a separate rating scale (0-4) to assess the extent and severity of surface marks or gloss transfer that result from stored pressure.
• Reporting Requirements: Lists the mandatory information for test reports, such as product identification, testing conditions, and deviations from the standard method.
• Reference to Other Standards: Cites key related documents within the EN 13523 series and general coating standards for cross-referencing.

Applications

SIST EN 13523-24:2017 serves a range of industries involved in the production, coating, and use of coil coated metals. Practical applications include:

• Quality Control: Enables metal coating manufacturers to validate the performance of organic coatings in resisting blocking and pressure marking, ensuring product reliability.
• Product Development: Assists R&D teams in designing coatings with enhanced resistance to pressure-related defects, improving end-use performance.
• Compliance and Certification: Supports adherence to European and international requirements for coated steel and aluminum products, facilitating market access.
• Supply Chain Assurance: Provides a standard procedure for suppliers and customers to specify, evaluate, and document coating performance, reducing disputes and nonconformity risks.
• Storage and Transport Optimization: Helps assess how packaging, stacking, and storing conditions may affect coating quality, aiding in safe handling and logistics planning.

Related Standards

For a comprehensive approach to coil coated metal quality, consider these related standards in the EN 13523 series and beyond:

• EN 13523-0: Coil coated metals - Test methods - Part 0: General introduction
• EN 13523-4: Pencil hardness test for assessing coating hardness
• EN 23270 (ISO 3270): Paints and varnishes - Conditioning and testing temperatures and humidities
• EN 10169: Continuously organic coated (coil coated) steel - Technical delivery conditions
• EN ISO 13076: Visual assessment lighting for coatings
• Additional parts of EN 13523 covering tests for film thickness, gloss, color, impact resistance, adhesion, water immersion, UV resistance, abrasion, and more

By adhering to SIST EN 13523-24:2017, manufacturers and users of coil coated metals can ensure consistent product quality, improve customer satisfaction, and meet regulatory and market demands for durable, high-performance coated metal products.