EN 1748-1-1:2004

Foreword
1 Scope
2 Normative references
3 Terms and definitions
4 Chemical composition
  4.1 Principal constituents
  4.2 Tint
5 Physical and mechanical characteristics
  5.1 General characteristics
  5.2 Definition of clear borosilicate glass
      5.2.1 Clear transparent borosilicate glass
      5.2.2 Clear translucent borosilicate glass
  5.3 Stability of physical and chemical characteristics
6 Dimensional requirements
  6.1 Manufacturing dimensions
      6.1.1 Stock sizes
      6.1.2 Final cut sizes
  6.2 Thickness
      6.2.1 Tolerances
  6.3 Length, width, squareness and tolerances
7 Quality requirements
  7.1 Methods of observation and measurement
      7.1.1 Optical faults
      7.1.2 Visual faults
  7.2 Acceptance levels
      7.2.1 Optical faults, spot faults, linear/extended faults
      7.2.2 Edge defects for final cut sizes
8 Designation
Bibliography

This document defines and classifies borosilicate glasses for use in building. It indicates their chemical composition, main physical and mechanical properties, dimensional and minimum quality requirements (in respect of optical and visual faults).This document applies to borosilicate glasses supplied in stock sizes or in cut sizes for final end use.This document does not apply to final cut sizes having a dimension less than 100 mm or a surface area less than 0,05 m².