1、 CEN ENJbZZ-1 95 = 3404589 0110896 031 = BRITISH STANDARD Tin and tin alloys - Pewter and pewterware Part 1. Pewter The European Standard EN 611-1 : 1995 has the status of a British Standard ICs 77.120.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN 611-1 : 1996 CEN E
2、N*bLL-L 95 m 3404589 OLL8897 T78 m I BS EN 611-1 : 1996 Committees responsible for this British Standard The preparation of this British Standard was entrusted to Technical Committee NFE/27, Tin and tin alloys, upon which the following bodies were represented: Association of British Pewter Craftsmen
3、 British Iron and Steel Producers Association Federation of the Electronics Industry ITRI Ltd. London Metal Exchange Metal Packaging Manufacturers Association Solder Makers Association This British Standard, having been prepared under the direction of the Engineering Sector Board, was published unde
4、r the authority of the Standards Board and comes into effect on 15 February 1996 0 BSI 1996 The following BSI references relate to the work on this standard : Committee reference NFE27 Draft for comment 92/35561 DC ISBN O 680 26348 1 Amendments issued since publication Amd. No. Date Text affected CE
5、N EN*bLL-L 95 = 3404589 OLL4898 904 W BS EN 611-1 : 1996 Contents Page Committees responsible Inside front cover National foreword ii Fore word 2 Text of EN 611-1 3 O BSI 1996 i CEN EN*bLL-1 95 3404589 0118899 840 BS EN 611-1 : 1996 National foreword This British Standard has been prepared by Techni
6、cal Committee NFE/27 and is the English language version of EN 611-1 : 1995 Tin and tin alloys - Pewter and pewtemuare - Part I: Pewter, published by the European Committee for Standardization (CEN). It partially supersedes BS 5140 : 1988, which will be withdrawn upon publication of BS EN 611-Z1). T
7、he United Kingdom took an active part in the preparation of EN 611-1 : 1995. Cross-references Publication referred to EN 610 : 1995 Corresponding British Standard BS EN 29453 : 1994 Soft solder lloys - BS EN 610 : 1996 Tin and tin alloys - Ingot tin cmpositions and forms EN 29453 : 1994 Chernicd Com
8、pliance with a British Standard does not of itself confer immunity from legal obligations. in preparation ii 0 BSI 1996 CEN EN*:bLL-L 95 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM 3404589 0118900 392 EN 611-1 July 1995 ICs 77.120.60 Descriptors: tin, tin alloys, ingots, sheets, manufacturing,
9、 works of art, specifications, chemical composition, sampling, marking English version Tin and tin alloys - Pewter and pewterware - Part 1: Pewter tain et alliages dtain - tain pour la fabrication dobjets en tain et objets en tain - Partie 1: tain pour la fabrication dobjets en tain Zinn und Zinnleg
10、ierungen - Zinnlegierungen und Zinngert - %il 1 : Zinnlegierungen This European Standard was approved by GEN on 1995-06-05. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard with
11、out any alteration. Up-to-date lists and bibliographical references concerning such national standards 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 m
12、ade by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Ital
13、y, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels O 1995 All rights of reproduction and communi
14、cation in any form and by any means reserved in all countries to CEN and its members Ref. No. EN 611-1 : 1995 E CEN EN*bLL-L 95 = 3404589 OLL890L 229 Page 2 EN 611-1 : 1995 Foreword This European Standard has been prepared by the Technical Committee CEN/TC 220, Tin and tin alloys, of which the secre
15、tariat is held by BSI. This European Standard consists of two Parts, of which Part 1 specifies the requirements for pewter alloys. The compositions of pewter alloys in Part 1 are based largely on proposals from the European Pewter Union. Part 2 of EN 611 will specify requirements for pewterware, mad
16、e from the pewter alloys specified in Part 1. 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 January 1996, and conflicting national standards shall be withdrawn at the latest by January 1996. Acc
17、ording to the CENKENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Co
18、ntents Foreword Scope Normative references Definitions Ordering information Requirements Selection and preparation of samples for analysis Analytical methods Inspection documentation Marking and labelling of ingots, sheets and blanks Annex A (normative) Rounding rules Annex B (normative) Method for
19、sampling ingots, sheets and blanks for analysis Annex C (normative) Solders in EN 29453 referred to in 5.2 Page 4 4 4 4 5 5 6 O BSI 1996 CEN EN*bLL-L 95 3404589 OLLB902 Lb5 Pewter alloy number Sn Element Page 3 EN 611-1 : 1995 1 Scope This Part of EN 611 specifies the chemical composition of pewter
20、alloys to be used for the manufacture of pewterware. The specified compositions apply to the alloy in the form of ingots, sheets and blanks. This Part of EN 611 also specifies the chemical composition of the solders to be used for the joining of: a) pewterware which may reasonably be expected to com
21、e into contact with foodstuffs; and b) pewterware for other purposes. NOTE. The requirements for pewterware and the procedures for sampling pewterware are specified in prEN 611-2. 3 Definitions For the purposes of this standard the following definitions apply. 3.1 ingot Cast, unwrought product in a
22、form suitable only for remelting. 3.2 sheet Rolled flat product supplied in straight lengths. 3.3 blank Shape stamped, or cut, from a sheet. 3.4 batch Series of ingots, sheets or blanks produced from a single uniform melt, 2 Normative references This Part of this European Standard incorporates by da
23、ted or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard
24、 only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. 4 Ordering information The following information shall be supplied by the purchaser in the enquiry and/or order, to assist the supplier in providing the correct m
25、aterial: a) the number of this Part of this European Standard (EN 611-1); b) the pewter alloy required (see table 1); c) whether ingots, sheets or blanks are required; d) if sheets or blanks are required, their nominal dimensions; e) the quantity required; f) whether a certificate of analysis or a s
26、tatement of conformity is required (see clause 8); g) for alloy 1, the agreed range for the silver content (see table 1); h) the specific packaging requirements. EN 610 EN 29453 Tin and tin alloys - Ingot tin Soft solder alloys - Chemical compositions and fm lble 1. Chemical composition of pewter al
27、loys Composition in % (mlm elements Pb 1 I Remainder, but tin 1 min. - 0,25 7,0 0,2 50 I- + silver not less than 91 % o, 5 Iless than 94 % /inax. 10,05 10.5 10,05 12,5 2 Remainder, but not min. - - - - 0,25 - 0,25 Remainder? but not min. - - - - less than 94 % Imax. 10,05 I0,5 10,05 10,05 - 0,25 Rem
28、ainder, but not min. - - - - 1 leSS than 9275 % 1 max. 10,05 I0,5 10,05 I0,05 - 0,25 li2 - - - - Remainder min. 1 max. 10,05 1 0,5 (*,O5 11,5 - 0,25 I) For alloy 1, the silver range required, up to a maximum of 4,O % Ag, shall be agreed between the purchaser and the supplier, and stated in the order
29、 (see 4g) ). O BSI 1996 CEN ENtbLL-1 95 3404589 0338903 OTL Page 4 EN 611-1 : 1995 5 Requirements 5.1 Chemical composition of pewter alloys The chemical composition of the pewter alloys in the form of ingots, sheets or blanks, shall conform to the requirements for the appropriate alloy given in tabl
30、e 1 when determined on samples selected in accordance with clause 6. In expressing the results for the analysis, the values obtained shall be rounded to the same number of decimal places as used in expressing the specified limit given in table 1. The rounding rules are given in annex A. Methods for
31、sampling a batch for analysis are given in annex B. 5.2 Chemical composition of solders for joining pewterware For those cases where the soldered joint may reasonably be expected to come into contact with foodstuffs, the solder used for joining the component parts of the pewterware shall contain not
32、 more than 0,25 % lead and 0,05 % cadmium. Examples of solders which meet this requirement are as follows: a) one of the alloys designated 1 to 6 in table 1 of this Part of this European Standard; or b) alloy No. 21 in EN 29453 (see annex C); or c) tin conforming to any of the grades specified in EN
33、 610. NOTE. It is recommended that soldered joints which may reasonably be expected not to come into contact with foodstuffs should be made using solder which conforms to a), b), c) of this subclause, or to alloy No. 11 or alloy No. 12 in EN 29453 (see annex C). 6 Selection and preparation of sample
34、s for analysis When analysis is to be carried out to verify conformity of a batch of ingots, sheets or blanks with the composition requirements of this European Standard, the selection of the samples, and the preparation of the analysis samples, shall be in accordance with annex B. 7 Analytical meth
35、ods For routine control purposes, the samples selected and prepared in accordance with clause 6 shall be analysed by the use of recognized chemical or instrumental analytical methods. In cases of dispute concerning the results of chemical analysis of pewter ingots, sheets or blanks, until the public
36、ation of European Standards1) for the analysis of pewter, the analytical methods to be disputing parties and any independent arbitrator. I used shall be subject to agreement between the 8 Inspection documentation The supplier shall provide inspection documentation with each consignment of ingots, sh
37、eets or blanks. The docurnentation shall be as requested by the purchaser in the enquiry and/or order see 4 f) , and shall be in accordance with either a) or b) as follows: a) a certificate giving the chemical analysis specific to each batch in the consignment, based on sample(s) taken from the melt
38、 from which the batch was produced; or b) a statement of conformity of the consignment with the order requirements. NOTE. The statement of conformity does not necessarily relate to specific tests carried out on the consignment. 9 Marking and labelling of ingots, sheets and blanks 9.1 Ingots All ingo
39、ts, or bundles of ingots, shall be marked with all the following information: a) number of this Part of this European Standard b) pewter alloy number (see table 1); c) producers name or mark; and d) batch identification. (EN 611-1); 9.2 Sheets and blanks Each packaging unit of sheets and/or blanks s
40、hali have affixed a label giving the following information: a) number of this Part of this European Standard b) pewter alloy number (see table 1); e) producers name or mark; and d) batch identification. (EN 611-1); )in course of preparation O BSI 1996 - - _ CEN ENWbLL-L 75 3404587 OLL8904 T3 Page 5
41、EN 611-1 : 1995 Annex A (normative) Rounding rules For the purposes of determining conformity with compositional limits an observed value, or a calculated value, obtained from the analysis is rounded to the same number of decimal places as used in this European Standard in expressing the specified l
42、imit. The following rules shall be used for rounding: a) if the figure immediately after the last figure to be retained is less than five, the last figure to be retained shall be kept unchanged; b) if the figure immediately after the last figure to be retained is equal to or greater than five, the l
43、ast figure to be retained shall be increased by one. Annex B (normative) Method for sampling ingots, sheets and blanks for analysis B.l Sampling of ingots B.l.l Principle A number of ingots is randomly selected from the batch. Sawcuts are made systematically in the selected ingots and the resulting
44、sawings are combined. Analysis samples are obtained by splitting the aggregated sample. B. 1.2 Materials and apparatus B.1.2.1 Steel wire brush. B.1.2.2 Soft bristle brush. B.1.2.3 Powered hacksaw, equipped with a steel blade for coarse cutting. B.1.2.4 Large magnet. B. 1.2.5 Degreasing solvent. B.1
45、.2.6 Sample splitter, or equipment for coning and quartering. B. 1.3 Procedure B.1.3.1 Selection of sample ingots from the batch According to the number of ingots in the batch, randomly select a number of sample ingots in accordance with the ingot sampling rate given in table B. 1. I able B1. Sampli
46、ng rate for batch of ingots I I Number of ingots in batch 1 to 4 3 to 20 21 to40 41 to 60 over 60 Number of sample ingots 1 1 2 4 6 10 5% of ingots in batch B.1.3.2 Preparation of sample ingots Ensure the sample ingots (B.1.3.1) are free of oil and grease. Clean the sample ingots by scratch brushing
47、 the surface, using the steel wire brush (B.1.2.1). Then use the soft brush (B.1.2.2) to remove any loose surface contaminants. B.1.3.3 Sawing the sample ingots Cut off, by sawing using the hacksaw (B.1.2.3), a quarter of the length of each sample ingot (B. 1.3.2). NOTE. The sawcut should not be mad
48、e through the end lug of the ingot. If any sample ingot has end lugs which are longer than one-quarter the length of the ingot, the cut should be made closer to the centre of the length of t,he ingot, such that the full cross-section of the ingot is sampled. Collect the sawings from each sample ingo
49、t. Aggregate and mix the sawings and remove any free iron with a magnet (B.1.2.4). B.1.3.4 Obtaining the analgsis sample Reduce the aggregated sample obtained in B.1.3.3 by means of the sample splitter or by coning and quartering (B.1.2.6), to obtain one, or more, representative samples of suitable size for analysis. B.2 Sampling of sheets and blanks B. 2.1 Principle Small pieces are cut from a number of sheets or blanks in the batch. The pieces are aggregated, melted and cast in a chill mould. Sawings, drillings or mi
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