Glass in building - Special basic products -Borosilicate glasses - Part 1-1: Definition and general physical and mechanical properties

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.

Glas im Bauwesen - Spezielle Basiserzeugnisse - Borosilicatgläser - Teil 1-1: Definitionen und allgemeine physikalische und mechanische Eigenschaften

Dieses Dokument definiert und klassifiziert Borosilicatgläser für das Bauwesen. Es macht Angaben über deren chemische Zusammensetzung, wesentliche physikalischen und mechanischen Eigenschaften, Maße und Mindestanforderungen an die Qualität (in Hinsicht auf optische und sichtbare Fehler).
Dieses Dokument gilt für Borosilicatgläser, die in Standardabmessungen oder in Festmaßen geliefert werden.
Dieses Dokument gilt nicht für Glas in Festmaßen von weniger als 100 mm oder mit einer Oberfläche von weniger als 0,05 m2.

Verre dans la construction - Produits de base spéciaux - Verres borosilicates - Partie 1-1 : Définitions et propriétés physiques et mécaniques générales

Le présent document définit et classe les verres borosilicates a utiliser en construction. Il indique leur composition chimique, leurs principales propriétés physiques et mécaniques, leurs exigences dimensionnelles et qualitatives minimales (compte tenu des défauts optiques et d'aspect).
Le présent document s'applique aux verres borosilicates fournis en dimensions standard ou découpés en mesures fixes en vue de leur usage final.
Le présent document ne s'applique pas aux verres borosilicates découpés en mesures fixes en vue de leur usage final dont l'une des dimensions est inférieure a 100 mm ou dont l'aire de la surface est inférieure a 0,05 m2.

Steklo v stavbah - Posebni osnovni proizvodi - 1. del: Borosilikatno steklo -1-1. del: Definicija in splošne fizikalne in mehanske lastnosti

General Information

Status
Published
Publication Date
31-Oct-2004
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Nov-2004
Due Date
01-Nov-2004
Completion Date
01-Nov-2004

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Steklo v stavbah - Posebni osnovni proizvodi - 1. del: Borosilikatno steklo -1-1. del: Definicija in splošne fizikalne in mehanske lastnostiGlas im Bauwesen - Spezielle Basiserzeugnisse - Borosilicatgläser - Teil 1-1: Definitionen und allgemeine physikalische und mechanische EigenschaftenVerre dans la construction - Produits de base spéciaux - Verres borosilicates - Partie 1-1 : Définitions et propriétés physiques et mécaniques généralesGlass in building - Special basic products -Borosilicate glasses - Part 1-1: Definition and general physical and mechanical properties81.040.20Steklo v gradbeništvuGlass in building01.040.81Glass and ceramics industries (Vocabularies)ICS:Ta slovenski standard je istoveten z:EN 1748-1-1:2004SIST EN 1748-1-1:2004en01-november-2004SIST EN 1748-1-1:2004SLOVENSKI

STANDARDSIST EN 1748-2:19991DGRPHãþD
SIST EN 1748-1-1:2004

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 1748-1-1September 2004ICS 01.040.81; 81.040.20Supersedes EN 1748-1:1997

English versionGlass in building - Special basic products -Borosilicate glasses -Part 1-1: Definition and general physical and mechanicalpropertiesVerre dans la construction - Produits de base spéciaux -Verres borosilicates - Partie 1-1 : Définitions et propriétésphysiques et mécaniques généralesGlas im Bauwesen - Spezielle Basiserzeugnisse -Borosilicatgläser - Teil 1-1: Definitionen und allgemeinephysikalische und mechanische EigenschaftenThis European Standard was approved by CEN on 21 June 2004.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36

B-1050 Brussels© 2004 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 1748-1-1:2004: ESIST EN 1748-1-1:2004

EN 1748-1-1:2004 (E) 2 Contents Page Foreword......................................................................................................................................................................3 1 Scope..............................................................................................................................................................4 2 Normative references....................................................................................................................................4 3 Terms and definitions...................................................................................................................................4 4 Chemical composition..................................................................................................................................6 4.1 Principal constituents...................................................................................................................................6 4.2 Tint..................................................................................................................................................................6 5 Physical and mechanical characteristics....................................................................................................6 5.1 General characteristics.................................................................................................................................6 5.2 Definition of clear borosilicate glass...........................................................................................................7 5.2.1 Clear transparent borosilicate glass............................................................................................................8 5.2.2 Clear translucent borosilicate glass............................................................................................................8 5.3 Stability of physical and chemical characteristics.....................................................................................9 6 Dimensional requirements............................................................................................................................9 6.1 Manufacturing dimensions...........................................................................................................................9 6.1.1 Stock sizes.....................................................................................................................................................9 6.1.2 Final cut sizes................................................................................................................................................9 6.2 Thickness.......................................................................................................................................................9 6.2.1 Tolerances......................................................................................................................................................9 6.3 Length, width, squareness and tolerances...............................................................................................10 7 Quality requirements...................................................................................................................................11 7.1 Methods of observation and measurement..............................................................................................11 7.1.1 Optical faults................................................................................................................................................11 7.1.2 Visual faults..................................................................................................................................................12 7.2 Acceptance levels........................................................................................................................................12 7.2.1 Optical faults, spot faults, linear/extended faults.....................................................................................12 7.2.2 Edge defects for final cut sizes..................................................................................................................13 8 Designation..................................................................................................................................................16 Bibliography..............................................................................................................................................................17

SIST EN 1748-1-1:2004
EN 1748-1-1:2004 (E) 3 Foreword

This document (EN 1748-1-1:2004) has been prepared by Technical Committee CEN /TC 129 "Glass in building", the secretariat of which is held by BIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2005, and conflicting national standards shall be withdrawn at the latest by March 2005.

This document supersedes EN 1748-1:1997. This document consists of the following parts: EN 1748-1-1

Glass in building - Special basic products - Borosilicate glasses – Part 1-1: Definition and general physical and mechanical properties EN 1748-1-2

Glass in building - Special basic products

- Borosilicate glasses – Part 1-2: Evaluation of conformity/Product standard According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.

SIST EN 1748-1-1:2004

EN 1748-1-1:2004 (E) 4 1 Scope 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. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.

EN 410, Glass in building - Determination of luminous and solar characteristics of glazing

3 Terms and definitions For the purposes of this document, the following definitions apply. 3.1 borosilicate glass silicate glass containing between 7 % and 15 % boron oxide. As a result of the composition it has a high thermal shock resistance and a very high hydrolytic and acid resistance. 3.2 borosilicate float glass flat, transparent or translucent, clear or tinted borosilicate glass having parallel and polished faces obtained by continuous casting and flotation on a metal bath. 3.3 drawn sheet borosilicate glass flat, transparent or translucent, clear or tinted borosilicate glass obtained by continuous drawing of a regular thickness and with two surfaces fire polished. 3.4 rolled borosilicate glass flat, transparent or translucent, clear or tinted borosilicate glass obtained by rolling.

3.5 cast borosilicate glass flat, transparent or translucent, clear or tinted borosilicate glass obtained by casting. 3.6 nominal length, H and nominal width, B pane length or pane width defined with reference to the direction of draw of the glass ribbon as shown in Figure 1, except for cast borosilicate glass which does not have a direction of draw. SIST EN 1748-1-1:2004

EN 1748-1-1:2004 (E) 5

Key : Direction of draw Figure 1 — Relationship of length, width and direction of draw 3.7 stock sizes glass delivered in manufacturers standard stock sizes. 3.8 final cut size a pane of glass that has been cut down to the dimensions being required either for installation or processing into a final product e.g. insulating glass units, thermally toughened safety glass. 3.9 optical faults these are faults, which lead to distortions on the appearance of objects observed through the glass. 3.10 visual faults these are faults, which alter the visual quality of the glass. They are spot faults and linear / extend faults. 3.11 spot faults a spot fault is a nucleus, which is sometimes accompanied by a halo of distorted glass. The dimension of a spot fault comprising a nucleus with a halo is obtained by multiplying the dimension of the nucleus by a factor of approximately 3. 3.12 linear / extended faults these faults can be on or in the glass, in the form of deposits, marks or scratches that occupy an extended length or area. 3.13 edge defects these defects can occur on the edge of a cut size piece in the form of entrant and emergent faults and / or bevels. 3.14 concentration, c the sum of the lengths of gaseous inclusions greater than 1,0 mm in any circle of 400 mm diameter. SIST EN 1748-1-1:2004

EN 1748-1-1:2004 (E) 6 4 Chemical composition 4.1 Principal constituents The magnitude of the proportions by mass of the principal constituents of all the borosilicate glass products covered by this standard is as follows:  Silicon Dioxide

SiO2
70 % to 87 %  Boron Oxide
B2O3
7 % to 15 %  Sodium Oxide
Na2O
0 % to 8 %  Potassium Oxide
K2O
0 % to 8 %  Aluminium Oxide
Al2O3
0 % to 8 %  Others
0 % to 8 %

4.2 Tint Body tinted glass is obtained by the addition of suitable materials. 5 Physical and mechanical characteristics 5.1 General characteristics Conv

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