1、BSI Standards PublicationBS EN 15681-1:2016Glass in building Basicalumino silicate glass productsPart 1: Definitions and general physical andmechanical propertiesBS EN 15681-1:2016 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 15681-1:2016.The UK participation
2、 in its preparation was entrusted to Technical Committee B/520/1, Basic and transformed glass products.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are
3、responsible for its correct application. The British Standards Institution 2016.Published by BSI Standards Limited 2016ISBN 978 0 580 89846 4 ICS 81.040.20 Compliance with a British Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the
4、Standards Policy and Strategy Committee on 29 February 2016.Amendments/corrigenda issued since publicationDate T e x t a f f e c t e dBS EN 15681-1:2016EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15681-1 January 2016 ICS 81.040.20 English Version Glass in building - Basic alumino silicate g
5、lass products - Part 1: Definitions and general physical and mechanical properties Verre dans la construction - Produits de base : verre aluminosilicate - Partie 1 : Dfinitions et proprits physiques et mcaniques gnrales Glas im Bauwesen - Basiserzeugnisse aus Alumo-Silicatglas - Teil 1: Definitionen
6、 und allgemeine physikalische und mechanische Eigenschaften This European Standard was approved by CEN on 30 November 2015. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard wit
7、hout any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other
8、 language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, D
9、enmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. EUROPEAN COMMITT
10、EE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2016 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15681-1:2016 EBS EN 15681-1:
11、2016EN 15681-1:2016 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Chemical composition . 6 4.1 General 6 4.2 Tint . 6 5 Physical and mechanical characteristics 6 5.1 General characteristics . 6 5.2 Characteristic bending strength 7 5.3 Des
12、ignation of clear alumino silicate glass 7 5.3.1 General 7 5.3.2 Clear transparent alumino silicate glass 8 5.3.3 Clear translucent alumino silicate glass . 8 5.4 Stability of physical and chemical characteristics 9 6 Dimensional requirements 9 6.1 Manufacturing dimensions 9 6.1.1 Stock sizes 9 6.1.
13、2 Supplied and final cut sizes . 9 6.2 Thickness and thickness tolerances . 9 6.3 Length, width and squareness . 10 7 Quality requirements . 10 7.1 General . 10 7.2 Methods of observation and measurement 11 7.2.1 Optical faults 11 7.2.2 Visual faults (spot faults, linear/extended faults), all types
14、of basic alumino silicate glass . 12 7.3 Acceptance levels . 13 7.3.1 Optical faults 13 7.3.2 Visual faults (spot faults, linear/extended faults), all types of basic alumino silicate glass . 13 7.4 Edge defects for final cut sizes . 14 7.4.1 Entrant and emergent faults 14 7.4.2 Bevel . 14 7.4.3 Limi
15、tations on edge defects 14 8 Designation. 15 Annex A (informative) Complementary information related to REACH . 16 Bibliography . 17 BS EN 15681-1:2016EN 15681-1:2016 (E) 3 European foreword This document (EN 15681-1:2016) has been prepared by Technical Committee CEN/TC 129 “Glass in building”, the
16、secretariat of which is held by NBN. 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 July 2016, and conflicting national standards shall be withdrawn at the latest by July 2016. Attention is drawn
17、 to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European
18、 Free Trade Association. This European Standard consists of the following parts: EN 15681-1 Glass in Building Basic alumino silicate glass products Part 1: Definitions and general physical and mechanical properties; EN 15681-2 Glass in Building Basic alumino silicate glass products Part 2: Evaluatio
19、n of conformity / Product standard1. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugosl
20、av Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. 1Standard under development. BS EN 15681-1:2016EN
21、15681-1:2016 (E) 4 1 Scope 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
22、 visual faults). This European Standard applies to basic alumino silicate glasses supplied in stock sizes, supplied sizes or in cut sizes for final end use. 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. 2 Normative r
23、eferences The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applie
24、s. EN 410, Glass in building - Determination of luminous and solar characteristics of glazing ISO 9385, Glass and glass-ceramics Knoop hardness test 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 alumino silicate glass silicate glass contain
25、ing between 5,8 % to 16,2 % aluminium and with a chemical composition according to 4.1 of this standard 3.2 alumino silicate float glass flat, transparent, clear or tinted alumino silicate glass having parallel and polished faces obtained by continuous casting and floatation on a metal bath Note 1 t
26、o entry: In French called glace and in German Floatglas. 3.3 alumino silicate drawn sheet glass flat, transparent or translucent, clear or tinted basic alumino silicate glass obtained by continuous drawing of a regular thickness and with the two surfaces fire polished 3.4 alumino silicate rolled gla
27、ss flat, transparent or translucent, clear or tinted basic alumino silicate glass obtained by rolling 3.5 length, H and width, B defined with reference to the direction of draw of the glass ribbon as shown in Figure 1 BS EN 15681-1:2016EN 15681-1:2016 (E) 5 Key I direction of draw H length B width F
28、igure 1 Relationship between length, width and direction of draw 3.6 stock sizes glass delivered in manufacturers standard stock sizes 3.7 supplied size pane of glass that has been supplied either as raw material for further processing and/or cutting down to a size for installation Note 1 to entry:
29、This is a size that is outside the stock size. 3.8 final cut size pane of glass that has been cut down to the dimensions being required either for installation or processing into a final product Note 1 to entry: Examples of processed final products are insulating glass units and thermally toughened
30、safety glass of those dimensions. 3.9 optical fault fault which leads to distortions in the appearance of objects observed through the glass 3.10 visual fault fault which alters the visual quality of the glass Note 1 to entry: Visual faults include spot faults and linear / extended faults. 3.11 spot
31、 fault spherical or quasi spherical fault which is produced by differing mechanisms, e.g. gaseous inclusion, solid inclusion, mark or deposit of small size 3.12 linear / extended faults fault which can be on or in the glass, in the form of deposits, reams, marks or scratches that occupy an extended
32、length or area BS EN 15681-1:2016EN 15681-1:2016 (E) 6 3.13 edge defect defect which can occur on the edge of a cut size piece in the form of entrant and emergent fault and/or bevel 3.14 concentration sum of the lengths of gaseous inclusions greater than 1,0 mm in any circle of 400 mm diameter 4 Che
33、mical composition 4.1 General The basic glass products covered by this European Standard are all manufactured from alumino silicate glass. The magnitude of the proportions by mass of the constituents of alumino silicate glass covered by this standard is given in Table 1, see also Annex A Table 1 Mag
34、nitude of the proportions by mass of the constituents of alumino silicate glass Constituents Proportion by mass of element Silicon (Si) 25,3 % to 35,1 % Aluminium (Al) 5,8 % to 16,2 % Si + Al 32,1 % to 51,3 % Lithium (Li) 0 % to 3,7 % Sodium (Na) 0 % to 10,5 % Calcium (Ca) 0 % to 2,1 % Magnesium (Mg
35、) 0 % to 5 % Zinc (Zn) 0 % to 2,4 % Potassium (K) 0 % to 7 % Zirconium (Zr) 0 % to 3,0 % Strontium (Sr) 0 % to 2,5 % Barium (Ba) 0 % to 3,6 % Other componentsa0 % to 5 % aProperties other than photometric characteristics shall not be significantly altered by these other components 4.2 Tint Body tint
36、ed glass is obtained by the addition of suitable materials. 5 Physical and mechanical characteristics 5.1 General characteristics Conventional numerical values for the physical and mechanical characteristics of basic alumino silicate glass products excluding Characteristic bending strength (fg;k) ar
37、e given in Table 2. These values, for BS EN 15681-1:2016EN 15681-1:2016 (E) 7 normal annealed glass without any further toughening, are not precise requirements with which the glass shall strictly comply, but are the generally accepted figures for use in calculations where a high degree of accuracy
38、is not required. Table 2 General characteristic values of basic alumino silicate glass Characteristic Symbol Value and unit Density (at 18 C) 2300 to 2600 kg/m3Hardness (Knoop) HK0,1/20 400 to 700 aYoungs modulus (modulus of elasticity) E 70 to 90 x GPa Poissons ratio 0,2 to 0,25 Specific heat capac
39、ity Cp 0,7 to 0,9 103J/(kg*K) Nominal value of average coefficient of linear expansion between 20 C and 300 C 3,5 to 9,8 106/K Resistance against temperature differential and sudden temperature change 60 K bThermal conductivity 0,8 to 1,7 W/(m*K) Mean refractive index to visible radiation (at 589,3
40、nm) n 1,5 to 1,55 Emissivity (corrected) 0,837 aKnoop Hardness in accordance with ISO 9385 bGenerally accepted value that is influenced by edge quality and glass type 5.2 Characteristic bending strength The characteristic bending strength value applies to quasi-static loading over a short time, e.g.
41、 wind loading, and relate to a 5 % probability of breakage at the lower limit of the 95 % confidence interval. The value of the characteristic bending strength, fg;k, for alumino silicate float glass is 45 MPa, for drawn sheet and rolled glass 25 MPa. NOTE Methods of determination of the bending str
42、ength of glass are given in EN 12881, EN 12882, EN 12883, EN 12884 and EN 12885 (see 1, 2, 3, 4, 5). Design of glass panes is covered by prEN 16612 (see 6). 5.3 Designation of clear alumino silicate glass 5.3.1 General An alumino silicate glass product is designated as clear alumino silicate glass w
43、hen it is not tinted and when the light transmittance of the glass material, unmodified by the possible presence of a coating or surface roughness complies with 5.3.2 and 5.3.3. In order to measure the light transmittance characteristics of glass, to determine whether it can be designated as a clear
44、 glass, it is necessary, in some cases, to carry out a pre-treatment: coatings on smooth surfaces have to be eliminated, without modifying the thickness of the glass substrate; rough surfaces, with or without coatings, have to be eliminated by smoothing and polishing. The thickness of the glass will
45、 be modified by this process. The light transmittance of the glass substrate shall be measured with its surfaces in a polished condition. BS EN 15681-1:2016EN 15681-1:2016 (E) 8 NOTE The light transmittance values given in 5.3.2 and 5.3.3 are not suitable for design. They are values used only for th
46、e designation of clear glass and exclude the effects of coatings and of surface roughness. The values of light transmittance used for design can be obtained from the glass manufacturer. They are determined in accordance with EN 410. 5.3.2 Clear transparent alumino silicate glass A transparent glass
47、product shall be designated as clear glass when it is not tinted and when its light transmittance: after any necessary pre-treatment, measured according to EN 410 and rounded to the nearest 0,01 is greater than or equal to the value given in Table 3 for the nominal thickness of the glass product. NO
48、TE The limiting value given in Table 3 is appropriate provided that the measured thickness of the glass product is within the allowable tolerances for the nominal thickness of that glass product. Table 3 Minimum light transmittance values for designating a transparent glass product as clear Nominal
49、thickness (mm) Minimum value 2 - 5 0,87 6, 8 0,84 10, 12 0,80 15 0,77 19 0,73 25 0,68 5.3.3 Clear translucent alumino silicate glass A translucent glass product is designated as clear glass when it is not tinted and when its light transmittance: after any necessary pre-treatment; measured according to EN 410; and rounded to the nearest 0,01; is greater than or equal to the value obtained by linear interpolation from Table 4, for the measured thickness of the specimen. NOTE The limiting value w
