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ISO 12540:2017 Glass in building - Tempered soda lime silicate safety glass, 2017
- Foreword
- Introduction
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Glass products
- 5 Fracture characteristics
- 5.1 General
- 5.2 Accidental human impact
- 5.3 Fragmentation
- 6 Dimensions and tolerances
- 6.1 Nominal thickness and thickness tolerances
- 6.2 Width and length (sizes)
- 6.2.1 General
- 6.2.2 Maximum and minimum sizes
- 6.2.3 Tolerances and squareness
- 6.2.4 Edge deformation produced by vertical tempering
- 6.3 Flatness
- 6.3.1 General
- 6.3.2 Measurement of overall bow
- 6.3.3 Measurement of wave or roller wave distortion
- 6.3.4 Measurement of edge lift (for horizontally tempered safety glass only)
- 6.3.5 Measurement of perimeter deformation of glass produced by air cushion toughening process
- 6.3.6 Measurement of local distortion (for vertically tempered safety glass only)
- 6.3.7 Limitation on overall bow, roller waves and edge lift for horizontally tempered safety glass
- 6.3.8 Limitation on overall bow, wave and perimeter deformation for tempered safety glass manufactured by air cushion process
- 6.3.9 Limitation on overall bow and local distortion for vertically tempered safety glass
- 6.3.10 Other distortions
- 7 Edge work, holes, notches and cut-outs
- 7.1 General
- 7.2 Edge working of glass for tempering
- 7.3 Profiled edges
- 7.4 Round holes
- 7.4.1 General
- 7.4.2 Diameter of holes
- 7.4.3 Limitations on position of holes
- 7.4.4 Tolerances on hole diameters
- 7.4.5 Tolerances on position of holes
- 7.5 Holes/others
- 7.6 Notches and cut-outs
- 7.7 Shaped panes
- 8 Fragmentation test
- 8.1 General
- 8.2 Dimensions and number of test specimens
- 8.3 Test procedure
- 8.4 Assessment of fragmentation
- 8.5 Minimum values from the particle count
- 8.6 Selection of the longest particle
- 8.7 Maximum length of the longest particle
- 8.8 Test report
- 9 Other physical characteristics
- 9.1 Optical distortion
- 9.1.1 Tempered safety glass produced by vertical tempering
- 9.1.2 Tempered safety glass produced by horizontal tempering
- 9.2 Anisotropy (iridescence)
- 9.3 Thermal durability
- 9.4 Mechanical strength
- 9.5 Surface pre-stress
- 10 Marking
- 11 Packaging
- Annex A (normative) Pendulum impact test methods
- Annex B (informative) Alternative method for the measurement of roller wave distortion
- Annex C (informative) Example of particle count
- Annex D (informative) Method for the measurement of the surface pre-stress of tempered safety glass
- Bibliography [Go to Page]