EN ISO 8442-7-2000 en Materials and Articles in Contact with Foodstuffs - Cutlery and Table Holloware - Part 7 Specification for Table Cutlery Made of Silver Other Precious Metals .pdf

1、STD-BSI BS EN IS0 8442-7-ENGL 2002 O Lb24bbS 0872265 149 I BRITISH STANDARD IS EN IS0 3442-72001 Materials and articles in contact with foodstuffs - Cutlery and table holloware - Part 7: Requirements for table cutlery made of silver, other precious metals and their alloys The European Sandard EN IS0

2、 844272000 has the status of a British Standard ICs 67.260; 97.040.60 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITIED BY COPYRIGHT LAW STD.BSI BS EN IS0 6442-7-ENGL 2001 l1b24bb3 0892Lbb O5 BS EN IS0 8442-72001 been prepared under the direction of the Consumer AmdNo. Products and Services Sect

3、or Committee, was published under the authority of the Standards Committee and comes into effect on 16 February 2001 Q BSI 02-2001 National foreword Date Comments This Briiish Standard is the official English language version of EN IS0 8442-7:2000. It is identical with IS0 8442-72000. The UK partici

4、pation in its preparation was entrusted to Technicai Committee CW/17, Cutlery and table holloware, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible inteonal/European committee any enquiries on the interpretation, or proposals for change, and keep

5、the UK interests - monitor related international and European developments and promulgate informed; them in the UK A list of organizations represented on this committee can be obtahed on request to its secretmy. Cross-references Attention is drawn to the fact that CEN and CENELEC Stan- normally incl

6、ude an annex which lists normative references to international publications with their corresponding European publications. The British Stanhds which implement these internationai or European publications may be found in the BSI Standards Catalogue under the section entitled “International Standards

7、 Correspondence Index”, or by using the “Find” facility of the BSI Stanhds Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard doe

8、s not of itself confer immunity from legal obligations. Summary of pages ”his document comprises a fmnt cover, an inside front cover, the EN IS0 title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright notice displayed in this document indicates when the document was last

9、issued. ISBN O 580 34827 X STD*BSI BS EN IS0 6442-7-ENGL ZOO1 W Lb24669 0892367 TL1 EUROPEAN STANDARD EN IS0 8442-7 NORME EUROPENNE EUROPISCHE NORM December 2000 ICs 67.250; 97.040.60 English version Materials and articles in contact with foodstuffs - Cutlery and table holloware - Part 7: Specificat

10、ion for table cutlery made of silver, other precious metals and their alloys (IS0 8442-7:2000) Matriaux et objets en contact avec les denres alimentaires - Coutellerie et orfvrerie de table - Pare 7: Spcifications relatives la coutellerie de table en argent massif, autres mtaux prcieux et leurs alli

11、ages (IS0 8442- 7:2000) Werkstoffe und Gegenstande in Kontak mit Lebensmitteln - Schneidwaren und Tafelgerte - Teil 7: Anforderungen fr Ebestecke aus Silber, anderen Edelmetallen und deren Legierungen (IS0 442-7:2000) This European Standard was approved by CEN on 9 April 2000. CEN members are bound

12、to comply with the CENEENELEC 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 standards may be obtained on application to the Manag

13、ement Centre 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 the Management Centre has the same status as the o

14、fficial versions. CEN members are the national 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. EUROPEAN COMMiTEE FOR STANDARDIZATION COM

15、ITE EUROPGEN DE NORMALISATION EUROPISCHES KOMITEE FUR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels O 2000 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN IS0 8442-7:2000 E STD.BS1 BS EN IS0 8442-7-ENGL 2003 162466

16、9 0892368 958 Page 2 EN IS0 8442-712000 Contents Page Foreword 1 Scope 2 Normative references 3 Terms and definitions 4 Materials 5 Construction 6 Precious metal-plating 7 Performance 8 Marking and labelling Annex A (normative) Method of test for adhesion of precious metal coating Annex B (normative

17、) Method of test for corrosion resistance of knife blades Annex C (normative) Test method for strength of knives with martensitic stainless steel blades Annex D (informative) A-deviations 3 4 4 4 4 5 6 6 8 9 10 12 14 STD.BSI BS EN IS0 8442-7-ENGL 2001, lb24669 0892lb9 894 Page 3 EN IS0 8442-7:2000 F

18、oreword The text of EN IS0 8442-7: 1999 has been prepared by 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 I. This European Standard sha

19、ll be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by January 2001, and conflicting national standards shall be withdrawn at the latest by January 2001. Attention is drawn to the European Community Directives relative to materia

20、ls in contact with foodstuffs, in particular Directive 89/109/EEC EN IS0 8442 consists of the following parts: Part 1:Requirements for cutlery for the preparation of food Part 2: Requirements for stainless steel and silver-plated cutlery Part 3: Requirements for silver-plated table and decorative ho

21、lloware Part 4: Requirements for gold-plated cutlery Further parts are proposed with the following titles Part 5: Specification for sharpness and edge retention test of cutlery Part 6: Lightly silver plated table holloware protected by a lacquer Part 8: Requirements for silver table and decorative h

22、olloware According to the CENKENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Nor

23、way, Portugal, Spain, Sweden, Switzerland and the United Kingdom. STD.BSI BS EN IS0 8442-7-ENGL 2003 Lb24bb9 0872370 506 Page 4 EN IS0 8442-7:2000 1 Scope This European Standard specifies material and performance requirements for table cutlery made of silver, other precious metals and their alloys (

24、knives with stainless steel blades, forks, spoons, carving sets, ladles and other pieces). It does not include requirements for design, size, type of finish, blade flexibility, or similar characteristics which are matters of personal choice or which can be readily assessed by the purchaser at the po

25、int of sale. No sampling provisions are included in this standard, the requirements specified are applicable for each and every item produced. 2 Normative references This European Standard incorporates by dated reference, provisions from other publications. These normative references are cited at th

26、e 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 (including amendments). IS0 4481: 1977 Cutlery an

27、d flatware - Nomenclature IS0 6508: 1986 Metallic materials - Hardness test - Rockwell test (scales A - B - C - D - E -F EN 10088-1: 1995 Stainless Steels, Part 1: List of stainless steels prEN 1904: 1995 Precious metals - Solders used with precious metal jewellery alloys -G - H - K) 3 Terms and def

28、initions For the purposes of this European Standard the terms and definitions given in annex of IS0 4481: 1977 apply together with the following. 3.1 unsharpened knives knives with an unsharpened blade used for cutting soft foods NOTE They are not made of martensitic stainless steel. Examples are bu

29、tter knife, fish serving knife, ice cream knife, fish knife, spreading knife, cheese knife. 4 Materials 4.1 General The table cutlery shall be made of silver, other precious metals and their alloys with a minimum standard of fineness of 800 (expressed in parts per thousand) that enable the finished

30、product to meet all of the performance requirements of this standard and which shall be neither detrimental to health nor have any detrimental organoleptic effects. STD.BSI BS EN IS0 8442-7-ENGL 2001 Lb24669 0872173 442 Application Carving items Page 5 EN IS0 8442-7:2000 Name number of materials str

31、ucture XCrMo 17-1 1.41 13 ferritic 4.2 Metals 4.2.1 Silver plating Any parts of silver table cutlery may be plated with a fine silver coating. 4.2.2 Soldering Precious metals in an article shall be soldered according to prEN 1904: 1995. 4.2.3 Stainless Steels Knife blades and any parts of the table

32、cutlery, which have to fulfil special requirements e.g. carving items, shall be made of stainless steels according to Table 1. Table 1 - Stainless steel for table cutlery, limiting requirements I Knife blades 1 X20Cr 13 I 1.4021 I martensitic I I The chemical composition shall be in accordance with

33、EN 10088-1 : 1995 4.3 Non-metals Non-metal parts of table cutlery may be made of such materials as glass, ceramics, plastics or similar materials provided that the finished cutlery complies with the relevant performance requirements of 4. 1. 5 Construction 5.1 Alignment, uniformity and absence of de

34、fects 5.1.1 All surfaces shall be free from cracks, pits and other defects. 5.1.2 All cutlery shall be essentially straight and symmetrical except when the lack of straightness or symmetry is an intentional feature of the design. 5.1.3 Identical items within a batch shall, as far as is practicable,

35、show no significant variation in dimension or form. 5.1.4 All edges, including the edges of spoons, forks, ladles and the insiders of fork prongs, shall be free from burrs and the roughness of blanked edges shall have been removed by a suitable operation. 5.1.5 Table knives shall be balanced such th

36、at when the knife is pivoted on its bolster, or at the junction of the handle and blade if no bolster is present, the handle shall be heavier than the blade. STD.BSI BS EN IS0 442-7-ENGL 2003 W Lb24bb9 0892372 369 Page 6 EN IS0 8442-7:2000 5.1.6 Compliance with the requirements for 5.1.1 to 5.1.5 sh

37、all be checked by touch or by visual inspection 5.2 Hollow handles The seams joining hollow handles together shall be watertight. 5.3 Knifeedges The cutting edge of sharpened table knives shall be either scalloped or serrated or shall be whetted to an included angle not greater than 60 O. The cuttin

38、g edges of a carving knife blade shall be whetted to an included angle not greater than 40“ and shall not be thicker than 0,46 mm when measured 1 mm from the edge. 6 Precious metal-plating 6.1 Hardness of hard gold coatings Gold coatings claimed to be hard shall contain 0,2 % minimum Co or Ni or Fe

39、or any other element which increases the hardness. 6.2 Adhesion of precious metal coatings When tested in accordance with annex A coatings shall show no signs of flaking, blistering or peeling. NOTE Alternative methods of determining the adhesion of coatings may be used provided the results obtained

40、 are in correlation with those given by ball burnishing. 6.3 Fineness of precious metal coatings The fineness of precious metal coatings should not be less than 925 %O. 7 Performance 7.1 Resistance to corrosion The surfaces of stainless steel parts of table cutlery shall comply with the requirements

41、 a) to c) when tested in accordance with the method described in annex B: a) length exceeding 1,5 mm shall have developed; no transverse cracks shall have developed and no longitudinal cracks of a b) having an area greater than a circle of 0,4 mm diameter on the handle, and not more than three pits

42、each having an area greater than a circle of 0,4 mm diameter (0,126 mm2) elsewhere; there shall not be more than three pits or zones of intergranular corrosion each c) than a circle of 0,75 mm (0,442 mm2) on any part. there shall be no pits or zones of intergranular corrosion having an area greater

43、STD.BS1 BS EN IS0 8442-7-ENGL 2001 1624669 0892373 215 Page 7 EN IS0 8442-712000 7.2 Strength 7.2.1 Knives with martensitic stainless steel blades A knife shall not crack or break and shall not acquire a permanent deformation of more than 3“ * 0,5 O when tested in accordance with the method describe

44、d in annex C. In addition, the handle blade joint shall not become loose. 7.2.2 Spoons, forks, ladles and unsharpened knives An item shall not have a permanent deformation of more than lmm when tested as follows; an item shall be laid on a plane with the highest point of the handle facing upward. A

45、force shall be applied equivalent to 5,5 N for each centimetre of overall length or 80N f 10 N whichever is the lesser for 10 s (see figure 1 for a spoon). During the application of this force the point of rest of the handle (A in figure 1) shall not be more than 10 mm from the edge of the supportin

46、g surface. t 5,5N/cm or 80 N f 10 N 1 length A point of rest Figure 1 - Strength test for a spoon STD.BS1 BS EN IS0 8442-7-ENGL ZOOL Lb24bb 0872374 151 Page 8 EN IS0 8442-72000 7.2.3 Firmness of handle attachment Handles that are not an integral part of the rest of the item shall be attached by a me

47、thod that prevents the handle turning relative to the rest of the item or pulling away from the blade when, immediately after being immersed for 10 min in water at a temperature of (100 !,)“C, the item is subjected to a) a pulling force of 180 oi0 for 10 s; b) a torque of (4,5 $,) Nm for items whose

48、 handles have a surface area of 37 cm2 or more, or a torque of (3,7 :,) Nm for items whose handles have a surface area of less than 37 cm2. The torque shall be applied for 10 s. The pulling force and torque shall be applied successively. 7.3 Hardness of knife blades Knife blades made from martensiti

49、c stainless steel shall have a minimum hardness of 48 HRC when tested in accordance with IS0 6508: 1986. Readings shall be taken not less than 40 mm from the handle. Carving knife blades shall have a minimum of 52 HRC. 8 Marking and labelling Each item of cutlery shall be legibly and indelibly marked with the name and/or trade mark or other means of identifying the manufacturer or responsible supplier. The following information shall be made available at the point of sale: - the number of this European Standard, - a statement that the cutlery me