Glass in building — Heat strengthened soda lime silicate glass

This document specifies product definitions, product characteristics (i.e. tolerances, flatness, edgework), fracture characteristics, including fragmentation, and the physical and mechanical characteristics of flat heat strengthened soda lime silicate glass for use in buildings. This document does not cover surface finished glasses (e.g. sandblasted, acid etched) after heat strengthening. This document does not cover curved (bent) glass. Other requirements, not specified in this document, can apply to heat strengthened soda lime silicate glass which is incorporated into assemblies (e.g. laminated glass or insulating glass units), or undergoes an additional treatment (e.g. coating). The additional requirements are specified in the appropriate glass product standard. Heat strengthened soda lime silicate glass, in this case, does not lose its mechanical or thermal characteristics.

Verre dans la construction — Verre de silicate sodo-calcique durci thermiquement

General Information

Status
Published
Publication Date
31-Aug-2020
Current Stage
9020 - International Standard under periodical review
Start Date
15-Jul-2025
Completion Date
15-Jul-2025
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ISO 22509:2020 - Glass in building -- Heat strengthened soda lime silicate glass
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INTERNATIONAL ISO
STANDARD 22509
First edition
2020-09
Glass in building — Heat strengthened
soda lime silicate glass
Verre dans la construction — Verre de silicate sodo-calcique durci
thermiquement
Reference number
©
ISO 2020
© ISO 2020
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
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Published in Switzerland
ii © ISO 2020 – All rights reserved

Contents Page
Foreword .v
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Glass products . 2
5 Fracture characteristics . 3
5.1 General . 3
5.2 Fragmentation . 3
6 Dimensions and tolerances . 3
6.1 Nominal thickness and thickness tolerances . 3
6.2 Width and length (sizes) . 4
6.2.1 General. 4
6.2.2 Maximum and minimum sizes . 4
6.2.3 Tolerances and squareness . 4
6.2.4 Edge deformation produced by vertical heat strengthening . 5
6.3 Flatness . 5
6.3.1 General. 5
6.3.2 Measurement of overall bow . 7
6.3.3 Measurement of wave or roller wave distortion . 8
6.3.4 Measurement of edge lift (for horizontally heat strengthened glass only) . 9
6.3.5 Measurement of perimeter deformation of glass produced by air cushion
toughening process . .10
6.3.6 Measurement of local distortion (for vertically heat strengthened glass only) .10
6.3.7 Limitation on overall bow, roller wave and edge lift for horizontally heat
strengthened glass .11
6.3.8 Limitation on overall bow, wave and perimeter deformation for heat
strengthened glass manufactured by air cushion process .12
6.3.9 Limitation on overall bow and local distortion for vertically heat
strengthened glass .12
6.3.10 Other distortions .13
7 Edge work, holes, notches and cut-outs.13
7.1 General .13
7.2 Edge working of glass for heat strengthening .13
7.3 Profiled edges.14
7.4 Round holes .14
7.4.1 General.14
7.4.2 Diameter of holes .14
7.4.3 Limitations on position of holes .14
7.4.4 Tolerances on hole diameters .16
7.4.5 Tolerances on position of holes .16
7.5 Notches and cut-outs .17
7.6 Shaped panes .18
8 Fragmentation test .18
8.1 General .18
8.2 Dimensions and number of test specimens .18
8.3 Test procedure .18
8.4 Assessment of fr agmentation .19
8.5 E valuation of fragmentation .21
8.6 Test report .21
9 Other physical characteristics .21
9.1 Optical distortion .21
9.1.1 Heat strengthened glass produced by vertical heat strengthening .21
9.1.2 Heat strengthened glass produced by horizontal heat strengthening .21
9.1.3 Heat strengthened glass produced by the air cushion process .22
9.2 Anisotropy (iridescence) .22
9.3 Thermal durability .22
9.4 Mechanical strength .22
9.5 Surface pre-stress .23
10 Marking .23
11 Packaging .23
Annex A (informative) Alternative method for the measurement of roller wave distortion .24
Annex B (informative) Method for the measurement of the surface pre-stress of heat
strengthened glass .26
Bibliography .28
iv © ISO 2020 – All rights reserved

Foreword
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ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/ directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
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expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso .org/
iso/ foreword .html.
This document was prepared by Technical Committee ISO/TC 160, Glass in building, Subcommittee SC 1,
Product considerations.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/ members .html.
...

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