This Part of this European Standard specifies and classifies basic alumino silicate glass products, indicates their chemical composition, their main physical and mechanical characteristics, their dimensional and their minimum quality requirements (in respect of optical and visual faults).<\/p>\n
This European Standard applies to basic alumino silicate glasses supplied in stock sizes, supplied sizes or in cut sizes for final end use.<\/p>\n
This European Standard does not apply to final cut sizes having a dimension less than 100 mm or a surface area less than 0,05 m2.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 4<\/td>\n | Contents Page <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | European foreword <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | Figure 1 \u2014 Relationship between length, width and direction of draw <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | 4 Chemical composition 4.1 General Table 1 \u2014 Magnitude of the proportions by mass of the constituents of alumino silicate glass 4.2 Tint 5 Physical and mechanical characteristics 5.1 General characteristics <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Table 2 \u2014 General characteristic values of basic alumino silicate glass 5.2 Characteristic bending strength 5.3 Designation of clear alumino silicate glass 5.3.1 General <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | 5.3.2 Clear transparent alumino silicate glass Table 3 \u2014 Minimum light transmittance values for designating a transparent glass product as clear 5.3.3 Clear translucent alumino silicate glass <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Table 4 \u2014 Minimum light transmittance values for designating a translucent glass product as clear 5.4 Stability of physical and chemical characteristics 6 Dimensional requirements 6.1 Manufacturing dimensions 6.1.1 Stock sizes 6.1.2 Supplied and final cut sizes 6.2 Thickness and thickness tolerances <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Table 5 \u2014 Nominal thicknesses and thickness tolerances 6.3 Length, width and squareness Table 6 \u2014 Tolerances, t, on the nominal dimensions length and width Table 7 \u2014 Limits for the difference between diagonals 7 Quality requirements 7.1 General <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 7.2 Methods of observation and measurement 7.2.1 Optical faults 7.2.1.1 Method of observation of optical faults on float glass 7.2.1.2 Method of measurement of optical faults on float glass Figure 2 \u2014 Plan view showing set up of zebra test <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | Figure 3 \u2014 Zones for the measurement of optical distortion 7.2.1.3 Method of observation of optical faults on drawn sheet and rolled glass 7.2.1.4 Method of measurement of optical faults on drawn sheet and rolled glass 7.2.2 Visual faults (spot faults, linear\/extended faults), all types of basic alumino silicate glass 7.2.2.1 Method of observation of visual faults (spot faults, linear\/extended faults) 7.2.2.2 Method of measurement of spot faults <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 7.2.2.3 Method of measurement of linear\/extended faults 7.3 Acceptance levels 7.3.1 Optical faults 7.3.1.1 Float glass Table 8 \u2014 Critical viewing angle 7.3.1.2 Drawn sheet and rolled glass 7.3.2 Visual faults (spot faults, linear\/extended faults), all types of basic alumino silicate glass Table 9 \u2014 Summary of acceptance levels <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | 7.4 Edge defects for final cut sizes 7.4.1 Entrant and emergent faults Figure 4 \u2014 Entrant and emergent faults \u2013 surface view Figure 5 \u2014 Entrant faults \u2013 edge view 7.4.2 Bevel Figure 6 \u2014 Bevel \u2013 edge view 7.4.3 Limitations on edge defects <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | Table 10 \u2014 Limitations on edge defects 8 Designation <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Annex A (informative) Complementary information related to REACH <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Glass in building. Basic alumino silicate glass products – Definitions and general physical and mechanical properties<\/b><\/p>\n |