1、BRITISH STANDARD BS EN ISO 8442-3:1998 Materials and articles in contact with foodstuffs Cutlery and table holloware Part 3: Requirements for silver-plated table and decorative holloware The European Standard ENISO8442-3:1997 has the status of a BritishStandard ICS 67.250; 97.040.60BSENISO8442-3:199
2、8 This British Standard, having been prepared under the directionof the Consumer Products and Services Sector Board, was published under theauthority of the Standards Board and comes into effect on 15February 1998 BSI 03-1999 ISBN 0 580 28813 7 National foreword This British Standard is the English
3、language version ofENISO8442-3:1997. It is identical withISO8442-3:1997. It supersedes BS7043:1989 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee CW/17, Cutlery and table holloware, which has the responsibility to: aid enquirers to understand the tex
4、t; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this committe
5、e can be obtained on request to its secretary. Cross-references Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement
6、 these international or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the neces
7、sary provisions of a contract. Users of British Standards are responsible for their correct 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
8、ISO title page, pages 2 to 13 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsBSENISO8442-3:1998 BSI 03-1
9、999 i Contents Page National foreword Inside front cover Foreword 2 Text of EN ISO 8442-3 3ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 8442-3 December 1997 ICS 67.250; 97.040.60 Descriptors: See ISO document English version Materials and articles in contact with foodstuffs Cutle
10、ry and table holloware Part 3: Requirements for silver-plated table and decorative holloware (ISO8442-3:1997) Matriaux et objets en contact avec les denres alimentaires Coutellerie et orfvrerie de table Partie 3: Exigences relatives lorfvrerie de table et dcorative en mtal argent (ISO8442-3:1997) We
11、rkstoffe und Gegenstnde in Kontakt mit Lebensmitteln Schneidwaren und Tafelgerte Teil 3: Anforderungen fr versilberte Tafelgerte und dekorative Hohlwaren (ISO8442-3:1997) This European Standard was approved by CEN on 11 October 1997. CEN members are bound to comply with the CEN/CENELEC Internal Regu
12、lations 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 standards may be obtained on application to the Central Secretariat or to any CEN member. This E
13、uropean 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 the Central Secretariat has the same status as the official versions. CEN members are the n
14、ational standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europi
15、sches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN members. Ref. No. EN ISO 8442-3:1997 EENISO8442-3:1997 BSI 03-1999 2 Foreword The text of ENISO8442-3:1997 has been prepared b
16、y Technical Committee CEN/TC 194 “Utensils in contact with food”, the secretariat of which is held by BSI, in collaboration with Technical Committee ISO/TC 186 “Cutlery and table and decorative metal hollow-ware”. This European Standard shall be given the status of a national standard, either by pub
17、lication of an identical text or by endorsement, at the latest by June 1998, and conflicting national standards shall be withdrawn at the latest by June 1998. EN ISO 8442 consists of the following parts: Part 1: Requirements for cutlery for the preparation of food; Part 2: Requirements for stainless
18、 steel and silver plated cutlery; Part 3: Requirements for silver-plated table and decorative holloware; Part 4: Requirements for gold-plated cutlery. Further parts are proposed with the following titles Part 5: Specific cutting test; Part 6: Lacquered lightly silver-plated table and decorative holl
19、oware; Part 7: Specification for table cutlery made of precious metals and their alloys, especially silver cutlery; Part 8: Specification for silver table and decorative holloware. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are
20、bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Contents Page Foreword 2 Introduction 3 1 Scope 3 2 Normative
21、 references 3 3 Definitions 3 4 Materials 4 5 Construction 5 6 Performance requirements 5 7 Marking and labelling 6 Annex A (informative) Classification by producttype 7 Annex B (informative) Bibliography 8 Annex C (normative) Test method for resistanceoflacquering to scratching 8 Annex D (normative
22、) Test method for resistanceofthe lacquer to ultraviolet radiation 9 Annex E (normative) Test method for the resistanceof rectangular and square trays anddishes to twisting 10 Annex F (normative) Test method for the resistanceof trays and dishes to popping 11 Annex G (normative) Test method for load
23、 strengthof a vessel 12 Annex H (normative) Test methods for strength ofattachments 12 Annex J (normative) Test method for pouring 12 Annex K (normative) Test method for temperatureof handles and leakage 13 Figure C.1 Diagram illustrating the mechanismof a suitable resistance to scratchingapparatus
24、9 Figure E.1 Twist test for trays and dishes 11 Table 1 Basis metals for silver-plated table anddecorative holloware, composition limits 4 Table 2 Average thickness of classes of silver-coatings 5 Table 3 Stability requirements 6 Table A.1 Classification by product type 7ENISO8442-3:1997 BSI 03-1999
25、 3 Introduction This Standard is based on ISO/TC 186 work and is concerned only with the performance of silver-plated table and decorative holloware and does not include requirements for design, size or any other characteristics which are matters of personal choice or which can be readily assessed b
26、y the purchaser at point of sale. Attention is drawn to Directives of the European Community concerning materials and articles in contact with food, in particular to Directives EC89/109 and EC90/128. 1 Scope This part of this Standard specifies material, performance requirements and test methods for
27、 silver-plated table and decorative holloware made principally from metals, and intended for use at or upon the dining table. Composition limits are specified for the basic metals for fabrication of the holloware prior to silver-plating. This standard applies to decorative items such as vases and tr
28、ophies and includes such items as jugs, dishes, tea- and coffee-pots, trays and tureens, candlesticks, wine-coolers etc. Requirements are specified for brass, copper, nickel-silver, pewter and stainless steel holloware with a silver-plated coating and for silver-plated cast attachments thereto. The
29、thickness levels of silver coatings are specified as first, second and third class, these deposits can also be protected by lacquer. The standard does not apply to holloware made entirely of precious metals, brass, nickel-silver, pewter, stainless steel or that made from ceramics or glass. 2 Normati
30、ve references This Standard incorporates by dated 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 thes
31、e publications apply to this Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. ISO 1463, Metallic and oxide coatings Measurement of coating thickness Microscopical method. ISO 2177, Metallic coatings Meas
32、urement of coating thickness Coulometric method by anodic dissolution. ISO 3497, Metallic coatings Measurement of coating thickness X-ray spectrometric methods. ISO 3543, Metallic and non-metallic coatings Measurement of thickness Beta backscatter method. ISO 4481:1977, Cutlery and flatware Nomencla
33、ture. EN ISO 8442-2:1997, Materials and articles in contact with foodstuffs Cutlery and table holloware Part 2: Requirements for stainless steel and silver plated cutlery. (ISO 8442-2:1997) 3 Definitions For the purposes of this Standard the definitions given in ISO4481:1977 and those from ENISO8442
34、-2:1997 apply together with the following. 3.1 table holloware items generally formed into a hollow shape for the containment of food or drink (seeAnnex A) 3.2 decorative holloware items generally formed into a hollow shape but not performing a purpose with respect to food or drink and including ite
35、ms which may not have a discernible interior surface (seeAnnex A) 3.3 functional surface the exterior surface of table or decorative holloware and trophies or the interior surface of a shallow item of holloware, the surface of which will receive usage equivalent to, or exceeding that, of the exterio
36、r 3.4 non functional surface the surface of an item of holloware which is silver-plated principally for aesthetic reasons e.g.the interiors of coffee-pots and vases or which issilver-plated for use with food or drink but which will receive a minimum of abrasive usage 3.5 attachment components of an
37、item of holloware joined to it by a process such as welding, brazing or soldering and comprising such items as handles, knobs, feet, spouts, stems and hingesENISO8442-3:1997 4 BSI 03-1999 3.6 load-bearing attachment an attachment upon which a force resulting from the support of the mass of the hollo
38、ware and/or its contents will be applied in normal use and comprising such items as handles, taps, feet, bases, spouts and goblet stems 3.7 burrs metal in excess of that required to shape an article and which forms a thin plate at its edges 3.8 oven-to-tableware items of holloware suitable for use i
39、n an oven or on a hotplate at temperatures of up to 250C such as e.g.vegetable dishes, meat flats, gravy boats, soup tureens, entre dishes 3.9 vessel an item of holloware specifically intended as a container for food and/or liquid 3.10 usable capacity the volume of liquid required to fill a vessel t
40、o15mm 1mm of its rim 3.11 popping sudden transformation of an apparently flat surface of an item of holloware from convex to concave when a load is applied to the convex side, usually accompanied by a distinctive sound 3.12 normal corrected vision the naked eye corrected to normal vision if necessar
41、y NOTEThis is usually done by the wearing of spectacles. 4 Materials 4.1 Metals 4.1.1 The composition of the metals of fabrication of the holloware shall be as given inTable 1. 4.1.2 Silver coatings shall be a minimum of98,5%Ag. 4.2 Non-metals Non-metal parts of silver-plated holloware may be made o
42、f such materials as glass, ceramic, bone, horn, vulcanized fibres, plastics, wood, wood-plastics laminates or impregnated wood provided that the finished holloware complies with the relevant performance requirements of clause6. Non-metal parts of table holloware shall be capable of withstanding wash
43、ing processes in aqueous solutions at 60C. Table 1 Basis metals for silver-plated table and decorative holloware, composition limits Materials Chemical composition% a C Cr Ni Cu Mn Fe Pb As Sn Zn max. min. min. min. max. max. max. max. min. min. Austenitic stainless steel 0,10 17 8 Ferritic stainles
44、s steel 16 Nickel-silver (Cu, Ni, Zn) 9 60 0,5 0,3 0,5 balance Brass(Cu, Zn) 62 Copper 99,4 0,2 0,2 Pewter 0,5 90 Alloy b 0,3 balance a Further chemical compositions are given in EN10088-1. b For attachments not coming into contact with food only.ENISO8442-3:1997 BSI 03-1999 5 5 Construction 5.1 Sil
45、ver-plating 5.1.1 General The requirements for minimum thicknesses of silver coating given in5.1.2 and5.1.3 shall not apply to the internal surfaces of: spouts, candelabra or any narrow ribbed sections of an item of holloware. 5.1.2 Average thickness The average thickness of silver coating on the ap
46、propriate surface of each finished item, when measured in accordance with the methods described inAnnex A (mass of coating) andAnnex B (area of coating), of EN ISO8442-2:1997 shall not be less than those given inTable 2. NOTEFor routine quality, control purposes the average thickness can be determin
47、ed by a non-destructive technique such as weighing before and after plating or by a statistically significant number of local thickness measurements provided that the technique adopted can be shown to give equivalent results to the specified method. 5.1.3 Local thickness The minimum local thickness
48、of silver coatings on functional and non-functional surfaces (see Annex A of EN ISO8442-2:1997) shall be not less than 60% of the average thickness deemed to be on the item. Minimum local thickness shall be measured in accordance with one of the methods specified in ISO2177, ISO1463, ISO3543 or ISO3
49、497. In cases of dispute the thickness shall be measured by the method described in ISO1463. 5.2 Uniformity and absence of defects 5.2.1 All surfaces shall be free from cracks and other defects. 5.2.2 All accessible edges shall be free from burrs and the roughness of blanked edges shall have been removed. 5.2.3 There shall be no gaps in excess of 0,4mm between components and seams joining hollow sections together shall be watertight unless required by the design. 5.2.4 Compliance
