1、BRITISH STANDARD BS EN 611-1:1996 Tin and tin alloys Pewter and pewterware Part 1: Pewter The European Standard EN611-1:1995 has the status of a British Standard ICS 77.120.60BSEN611-1:1996 This British Standard, having been prepared under the directionof the Engineering SectorBoard, was published u
2、nderthe authority of the Standards Board and comesintoeffect on 15February1996 BSI 08-1999 The following BSI references relate to the work on this standard: Committee reference NFE/27 Draft for comment 92/35561 DC ISBN 0 580 25348 1 Committees responsible for this British Standard The preparation of
3、 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 British Iron and Steel Producers Association Federation of the Electronics Industry ITRI Ltd. London Metal Exchange Metal
4、Packaging Manufacturers Association Solder Makers Association Amendments issued since publication Amd. No. Date CommentsBSEN611-1:1996 BSI 08-1999 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 Text of EN 611-1 3 List of references Inside back coverBSEN611-
5、1:1996 ii BSI 08-1999 National foreword This British Standard has been prepared by Technical Committee NFE/27 and is the English language version of EN611-1:1995 Tin and tin alloys Pewter and pewterware Part 1: Pewter, published by the European Committee for Standardization (CEN). It partially super
6、sedes BS5140:1988, which will be withdrawn upon publication of BS EN611-2 1) . The UnitedKingdom took an active part in the preparation of EN611-1:1995. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their cor
7、rect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, theEN title page, pages 2 to 8, an inside back cover and a back cover. This standard has been
8、 updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. 1) In preparation. Cross-references Publication referred to Corresponding British Standard EN 610:1995 BS EN610:1996 Tin and tin alloys Ingot tin EN 29453:
9、1994 BS EN 29453:1994 Soft solder alloys Chemical compositions and formsEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 611-1 July 1995 ICS 77.120.60 Descriptors: Tin, tin alloys, ingots, sheets, manufacturing, works of art, specifications, chemical composition, sampling, marking English versio
10、n Tin and tin alloys Pewter and pewterware Part1: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 Zinnlegierungen Zinnlegierungen und Zinngert Teil 1: Zinnlegierungen This European Standard was approv
11、ed by CEN on 1995-06-05. 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 without any alteration. Up-to-date lists and bibliographical references concerning such national stand
12、ards 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 translation under the responsibility of a CEN member into its own language and notified to
13、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, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CEN Eu
14、ropean Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1995 All rights of reproduction and communication in any form and by any means reserved in all countries to CEN and its members Ref. No. EN611-1
15、:1995 EEN611-1:1995 BSI 08-1999 2 Foreword This European Standard has been prepared by the Technical Committee CEN/TC220, Tin and tin alloys, of which the secretariat is held by BSI. This European Standard consists of two Parts, of which Part1 specifies the requirements for pewter alloys. The compos
16、itions of pewter alloys in Part1 are based largely on proposals from the European Pewter Union. Part2 of EN611 will specify requirements for pewterware, made from the pewter alloys specified in Part1. This European Standard shall be given the status of a national standard, either by publication of a
17、n identical text or by endorsement, at the latest by January1996, and conflicting national standards shall be withdrawn at the latest by January1996. According to the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, F
18、inland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the UnitedKingdom. Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Definitions 3 4 Ordering information 3 5 Requirements 4 6 Selection and preparation of
19、samples for analysis 4 7 Analytical methods 4 8 Inspection documentation 4 9 Marking and labelling of ingots, sheets and blanks 4 Annex A (normative) Rounding rules 5 Annex B (normative) Method for sampling ingots, sheets and blanks for analysis 5 Annex C (normative) Solders in EN29453 referred to i
20、n5.2 6 Table 1 Chemical composition of pewter alloys 3 Table B.1 Sampling rate for batch of ingots 5 Table C.1 Chemical composition of EN29453 solders 7EN611-1:1995 BSI 08-1999 3 1 Scope This Part of EN611 specifies the chemical composition of pewter alloys to be used for the manufacture of pewterwa
21、re. The specified compositions apply to the alloy in the form of ingots, sheets and blanks. This Part of EN611 also specifies the chemical composition of the solders to be used for the joining of: a) pewterware which may reasonably be expected to come into contact with foodstuffs; and b) pewterware
22、for other purposes. NOTEThe requirements for pewterware and the procedures for sampling pewterware are specified in prEN611-2. 2 Normative references This Part of this European Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cit
23、ed 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 only when incorporated in it by amendment or revision. For undated references the latest editio
24、n of the publication referred to applies. EN 610, Tin and tin alloys Ingot tin. EN 29453, Soft solder alloys Chemical compositions and forms. 3 Definitions For the purposes of this standard the following definitions apply. 3.1 ingot cast, unwrought product in a form suitable only for remelting 3.2 s
25、heet 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 4 Ordering information The following information shall be supplied by the purchaser in the enquiry and/or order, to ass
26、ist the supplier in providing the correct material: a) the number of this Part of this European Standard (EN611-1); b) the pewter alloy required (seeTable 1); c) whether ingots, sheets or blanks are required; d) if sheets or blanks are required, their nominal dimensions; e) the quantity required; Ta
27、ble 1 Chemical composition of pewter alloys Composition in% (m/m) Pewter alloy number Sn Element Ag Bi Cd Cu Pb Sb Total other elements 1 Remainder, but tin + silver not less than 91% min. max. 4,0 a 0,5 0,05 1,0 2,5 0,25 5,0 7,0 0,2 2 Remainder, but not less than 94% min. max. 0,05 0,5 0,05 0,5 2,5
28、 0,25 3,0 5,0 0,2 3 Remainder, but not less than 91,5% min. max. 0,05 0,5 0,05 0,25 2,0 0,25 4,5 8,0 0,2 4 Remainder, but not less than94% min. max. 0,05 0,5 0,05 0,05 0,25 3,0 6,0 0,2 5 Remainder, but not less than92,5% min. max. 0,05 0,5 0,05 0,05 0,25 6,5 7,5 0,2 6 Remainder min. max. 0,05 0,5 0,
29、05 1,5 0,25 2,5 0,2 a For alloy 1, the silver range required, up to a maximum of4,0%, Ag, shall be agreed between the purchaser and the supplier, and stated in the order see4 g).EN611-1:1995 4 BSI 08-1999 f) whether a certificate of analysis or a statement of conformity is required (see clause8); g)
30、 for alloy 1, the agreed range for the silver content (seeTable 1); h) the specific packaging requirements. 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 approp
31、riate alloy given inTable 1 when determined on samples selected in accordance with clause6. 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 i
32、nAnnex A. Methods for sampling a batch for analysis are given inAnnex 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 pewterw
33、are shall contain not more than0,25% lead and0,05% cadmium. Examples of solders which meet this requirement are as follows: a) one of the alloys designated1 to6 inTable 1 of this Part of this European Standard; or b) alloy No.21 in EN29453 (seeAnnex C); or c) tin conforming to any of the grades spec
34、ified in EN610. NOTEIt 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 EN29453 (seeAnnex C). 6 Selection and preparation of sa
35、mples 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 withAnnex B. 7 Analytical m
36、ethods For routine control purposes, the samples selected and prepared in accordance with clause6 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 publ
37、ication of European Standards 2)for the analysis of pewter, the analytical methods to be used shall be subject to agreement between the disputing parties and any independent arbitrator. 8 Inspection documentation The supplier shall provide inspection documentation with each consignment of ingots, sh
38、eets or blanks. The documentation shall be as requested by the purchaser in the enquiry and/or order see4 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 fr
39、om which the batch was produced; or b) a statement of conformity of the consignment with the order requirements. NOTEThe 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 ingots, o
40、r bundles of ingots, shall be marked with all the following information: a) number of this Part of this European Standard (EN611-1); b) pewter alloy number (seeTable 1); c) producers name or mark; and d) batch identification. 9.2 Sheets and blanks Each packaging unit of sheets and/or blanks shall ha
41、ve affixed a label giving the following information: a) number of this Part of this European Standard (EN611-1); b) pewter alloy number (seeTable 1); c) producers name or mark; and d) batch identification. 2) In course of preparationEN611-1:1995 BSI 08-1999 5 Annex A (normative) Rounding rules For t
42、he 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 limit. The following rules shall be used for rounding: a)
43、 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 last figure to be retained shall be increased by one. Ann
44、ex B (normative) Method for sampling ingots, sheets and blanks for analysis B.1 Sampling of ingots B.1.1 Principle A number of ingots is randomly selected from the batch. Sawcuts are made systematically in the selected ingots and the resulting sawings are combined. Analysis samples are obtained by s
45、plitting 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.1.2.6 Sample splitter, or equipment for coning and quarteri
46、ng. 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 inTable B.1. Table B.1 Sampling rate for batch of ingots B.1.3.2 Preparation of sample ingo
47、ts Ensure the sample ingots (B.1.3.1) are free of oil and grease. Clean the sample ingots by scratch brushing 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 h
48、acksaw (B.1.2.3), a quarter of the length of each sample ingot (B.1.3.2). NOTEThe sawcut should not be made 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 the i
49、ngot, such that the full cross-section of the ingot is sampled. Collect the sawings from each sample ingot. Aggregate and mix the sawings and remove any free iron with a magnet (B.1.2.4). B.1.3.4 Obtaining the analysis sample Reduce the aggregated sample obtained inB.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 blan
