EN 993-2:1995/A1:2003

Overview

EN 993-2:1995/A1:2003 is a European standard developed by CEN that specifies the methods of test for dense shaped refractory products, focusing particularly on the determination of true density. This standard provides a critical methodology for accurately measuring the density of refractory materials, which are essential in high-temperature industrial applications such as steelmaking, ceramics, and glass production. The amendment A1:2003 updates the required accuracy for the balance used in testing, enhancing the precision of measurements.

Key Topics

• Scope of the Standard
  The document outlines procedures for determining the true density of dense shaped refractory products, which are vital for assessing quality and performance characteristics.

• Measurement Accuracy
  A significant amendment in clause 5.2 refines the accuracy requirement for the weighing balance from a tolerance of ±0.1 g to a finer resolution of ±0.001 g. This change improves the reliability and repeatability of density measurements.

• Testing Procedures
  The standard includes detailed testing methodologies to ensure consistent results across laboratories and industries.

• Refractory Products
  The test methods apply primarily to dense shaped refractories, materials designed to withstand extreme temperatures and corrosive environments without degradation.

Applications

• Quality Control in Manufacturing
  Manufacturers of refractory bricks, blocks, and other shaped products use EN 993-2:1995/A1:2003 to verify material uniformity and density, ensuring products meet design specifications.

• Material Research and Development
  Researchers rely on the precise density determination methods to develop new refractory composites with optimized thermal and mechanical properties.

• Industrial Furnaces and Kilns
  Plant operators use density data as part of maintenance and replacement planning for furnace linings to enhance operational safety and efficiency.

• Certification and Compliance
  Compliance with this standard is often a requirement for certification and acceptance of refractory materials in various industrial sectors, guaranteeing adherence to European norms.

Related Standards

• EN 993-1 - General methods of test for dense shaped refractory products: Part 1 covers classification and basic testing methods complementary to density determination.

• EN 993-3 - Methods of test for dense shaped refractory products: Part 3 focuses on thermal conductivity measurement, supporting comprehensive material characterization.

• ISO 5017 - Determination of density of bricks and ceramic products: Though broader in scope, this international standard complements the testing protocols outlined in EN 993-2 for refractories.

• ISO 2738 - Determination of apparent porosity and true density of refractories by mercury porosimetry: Provides an alternative methodology for density measurement.

Keywords: EN 993-2, true density determination, refractory products testing, dense shaped refractories, refractory materials standard, CEN standards, density measurement accuracy, refractory product quality control.