1、BSI Standards PublicationBS EN 851:2014Aluminium and aluminiumalloys Circle and circle stockfor the production of culinaryutensils SpecificationsBS EN 851:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 851:2014. Itsupersedes BS EN 851:1996 which is withdra
2、wn.The UK participation in its preparation was entrusted to TechnicalCommittee NFE/35, Light metals and their alloys.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract
3、. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 83719 7ICS 77.150.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority
4、 of theStandards Policy and Strategy Committee on 31 May 2014.Amendments issued since publicationDate Text affectedBS EN 851:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 851 April 2014 ICS 77.150.10 Supersedes EN 851:1995English Version Aluminium and aluminium alloys - Circle and circle
5、stock for the production of culinary utensils - Specifications Aluminium et alliages daluminium - Disques et bauches pour disques pour applications culinaires - Spcifications Aluminium und Aluminiumlegierungen - Ronden und Rondenvormaterial zur Herstellung von Kchengeschirr - Spezifikationen This Eu
6、ropean Standard was approved by CEN on 13 March 2014. 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 c
7、oncerning 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 language made by translation under the responsibility of a CEN member
8、 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, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, Franc
9、e, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOM
10、ITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 851:2014 EBS EN 851:2014EN 851:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative referenc
11、es 4 3 Terms and definitions .4 4 Technical conditions for inspection and delivery 5 4.1 General 5 4.2 Orders or tenders.5 5 Mechanical properties .6 5.1 General 6 5.2 Earing 6 6 Tolerances on dimensions and form .6 6.1 General 6 6.2 Diameter 6 6.3 Thickness .7 6.4 Tolerances on flatness for circle
12、7 6.5 Edge burr tolerances for circle .7 7 Other requirements7 Bibliography . 12 BS EN 851:2014EN 851:2014 (E) 3 Foreword This document (EN 851:2014) has been prepared by Technical Committee CEN/TC 132 “Aluminium and aluminium alloys”, the secretariat of which is held by AFNOR. This European Standar
13、d shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2014 and conflicting national standards shall be withdrawn at the latest by October 2014. Attention is drawn to the possibility that some of the elements of this
14、 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 supersedes EN 851:1995. With regard the previous version, Clause 2 Normative references was updated; no new alloys were added. According to the
15、 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 Yugoslav Republic of Macedonia, France, Germany, Greece, Hu
16、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 851:2014EN 851:2014 (E) 4 1 Scope This European Standard specifies the particular requirements fo
17、r wrought aluminium and aluminium alloys in the form of circle or circle stock for culinary utensils applications. This standard is applicable to: Circles made out of hot or cold rolled circles stock, with a thickness from 0,2 mm up to and including 12 mm and with a diameter from 100 mm up to and in
18、cluding 1 600 mm. NOTE Circles with a diameter up to 1 000 mm can be produced by blanking. Hot or cold-rolled circle stock with a thickness from 0,2 mm up to and including 12 mm and with a width up to 1 600 mm. This European Standard is not applicable to slugs for impact extrusions which are dealt w
19、ith in other European Standards. 2 Normative references 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 referen
20、ced document (including any amendments) applies. EN 485-1, Aluminium and aluminium alloys Sheet, strip and plate Part 1: Technical conditions for inspection and delivery EN 485-2, Aluminium and aluminium alloys - Sheet, strip and plate - Part 2: Mechanical properties EN 485-3, Aluminium and aluminiu
21、m alloys - Sheet, strip and plate - Part 3: Tolerances on dimensions and form for hot-rolled products EN 485-4, Aluminium and aluminium alloys - Sheet, strip and plate - Part 4: Tolerances on shape and dimensions for cold-rolled products EN 515, Aluminium and aluminium alloys - Wrought products - Te
22、mper designations EN 602, Aluminium and aluminium alloys - Wrought products - Chemical composition of semi-finished products used for the fabrication of articles for use in contact with foodstuff 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.
23、1 circle circular flat product obtained by circular sawing or shearing, or by blanking of a flat rolled product with a uniform thickness over 0,20 mm BS EN 851:2014EN 851:2014 (E) 5 3.2 circle stock flat rolled product of rectangular cross-section with uniform thickness over 0,20 mm, supplied in coi
24、ls, sheets, or plates, usually with sheared or sawn edges, and intended to be sawn, sheared or blanked into flat shapes to be subsequently formed, drawn, etc. Note 1 to entry: The thickness does not exceed one tenth of the width. 3.3 hot rolled circle and circle stock circle or circle stock whose fi
25、nal thickness is obtained by hot rolling 3.4 cold rolled circle and circle stock circle or circle stock whose final thickness is obtained by cold rolling 4 Technical conditions for inspection and delivery 4.1 General All the provisions of EN 485-1 shall apply, except Clause 4 (orders and tenders) wh
26、ich is modified as follows: 4.2 Orders or tenders The order or tender shall define the product required and shall contain the following information: a) the form and the type of product: 1) the form of the product (circle and circle stock); 2) the designation of the aluminium or aluminium alloy; 3) w
27、hen subsequent decorative anodising, anti-adhesive coating, enamelling, etc. by the customer is intended, this shall be expressly stated on the order. In all other cases, indication of the customer application is recommended; b) the metallurgical temper of the material for delivery according to EN 5
28、15 (degree of hardness or heat treatment condition) and, if different, the metallurgical temper for use; c) the number of this European Standard or Specification number, or where none exists, the properties greed between purchaser and supplier; d) the dimensions and shape of the product as applicabl
29、e: 1) thickness; 2) diameter of the circle; 3) width of the strip, sheet, or plate; 4) length of the sheet or plate; 5) internal and external diameters of the coil; e) whether hot rolled or cold rolled tolerances apply; BS EN 851:2014EN 851:2014 (E) 6 f) quantity: 1) mass or number of pieces; 2) tol
30、erances on quantity if required; g) any requirements for inspection documents; h) any special requirements agreed between purchaser and supplier: 1) marking of products; 2) references to drawings, etc; 3) any special test required (earing, etc.) and the corresponding acceptation limits; i) for produ
31、cts intended to be surface treated by the purchaser the order shall also contain the following information: 1) the intended particular surface treatment (according to the relevant European Standard) 2) the number of sides for which a good visual appearance is required and, if only one side, its posi
32、tion with respect to the strip (inside or outside of the coil) or the sheet, plate or circle (upside or downside). 5 Mechanical properties 5.1 General The mechanical properties shall conform to the requirements specified in EN 485-2. 5.2 Earing When applications, such as deep drawing and spinning re
33、quire a limited level of earing, the maximum acceptable level shall be agreed between purchaser and supplier, recognising that test results may be dependent on testing procedures. 6 Tolerances on dimensions and form 6.1 General Tolerances on dimensions and form shall conform to EN 485-3 and EN 485-4
34、, with the amendments and additions given in 6.2 to 6.5. 6.2 Diameter Tolerances on diameters for circle shall conform to Table 1. These tolerances include the tolerances on roundness. NOTE For circle obtained by blanking, the recommended standard diameters are: From 100 mm up to 500 mm nominal diam
35、eter : every multiple of 5; BS EN 851:2014EN 851:2014 (E) 7 Over 500 mm up to 1 000 mm nominal diameter: every multiple of 10. 6.3 Thickness Tolerances on thickness for hot rolled circle and circle stock shall conform to Table 2. Tolerances on thickness for cold rolled circle and circle stock shall
36、conform to Table 3. The partition into group I and group II of most common materials which may be used for the present application, in conformance with EN 602, shall be as shown in Table 4. 6.4 Tolerances on flatness for circle Tolerances on flatness for circles, expressed as a percentage of the dia
37、meter D and/or the measured chord length L, shall conform to Table 5. Deviation from flatness d, resulting from arching or buckling, shall be measured as shown in Figures 1 and 2, using a lightweight straightedge and a feeler gauge, dial gauge or scale, while the circle is resting on a horizontal ba
38、se plate, concave side upwards. Two measurements shall be carried out with the straight edge respectively parallel and perpendicular to the rolling direction. 6.5 Edge burr tolerances for circle The edge burr shall not be detachable under slight pressure with the thumb, in order not to induce mechan
39、ical defects on the surface during the subsequent forming operations (deep drawing, spinning, etc.). It is recommended that the height of the total burr as measured from the flat surface of the circle (see Figure 3) should not exceed: 0,2 mm for thicknesses up to 2 mm; 10 % of the nominal thickness
40、for thickness above 2 mm. 7 Other requirements Particular surface roughness requirements may be agreed between supplier and customer. In that case, the maximum acceptable roughness shall be specified as well as the method of measurement, according to an appropriate standard or specification, and the
41、 location and number of measuring points. BS EN 851:2014EN 851:2014 (E) 8 Table 1 Tolerances on diameter Dimensions in millimetres Specified thickness Method of production Diameter tolerances for specified diameter aover up to up to 600 over 600 up to 1 000 over 1 000 up to 1 600 0,2 4,0 Blanking 0,
42、3 0,3 - circular sawing or shearing + 3 0 + 4 0 + 7 0 4,0 6,0 Blanking 0,5 0,5 - circular sawing or shearing + 4 0 + 5 0 + 8 0 6,0 12,0 Blanking 0,7 0,7 - circular sawing or shearing + 4 0 + 5 0 + 8 0 aThese tolerances include the tolerances on roundness. Table 2 Thickness tolerances for hot rolled
43、circle and circle stock Dimensions in millimetres Specified thickness Thickness tolerance for specified diameter or width over up to up to 1 250 over 1 250 up to 1 600 2,5 4,0 0,28 0,28 4,0 5,0 0,30 0,30 5,0 6,0 0,32 0,32 6,0 8,0 0,35 0,35 8,0 10,0 0,40 0,45 10,0 12,0 0,45 0,55 BS EN 851:2014EN 851:
44、2014 (E) 9 Table 3 Thickness tolerances for cold-rolled circle and circle stock Dimensions in millimetres Specified thickness Thickness tolerances for specified diameter or width aover up to up to 1 000 over 1 000 up to 1 250 over 1 250 up to 1 600 Group I Group II Group I Group II Group I Group II
45、0,2 0,5 0,02 0,03 0,03 0,03 0,04 0,05 0,5 0,6 0,03 0,03 0,04 0,04 0,05 0,06 0,6 0,8 0,03 0,04 0,04 0,04 0,05 0,07 0,8 1,0 0,04 0,04 0,05 0,05 0,06 0,07 1,0 1,2 0,04 0,05 0,06 0,07 0,07 0,08 1,2 1,5 0,04 0,05 0,07 0,08 0,09 0,10 1,5 1,8 0,05 0,06 0,08 0,09 0,10 1,8 2,0 0,05 0,06 0,10 0,10 2,0 2,5 0,0
46、6 0,07 0,10 0,10 2,5 3,0 0,07 0,08 0,12 0,13 3,0 3,5 0,10 0,13 0,13 3,5 4,0 0,11 0,15 0,17 4,0 5,0 0,15 0,20 0,20 5,0 6,0 0,20 0,22 0,24 6,0 8,0 0,24 0,26 0,28 aWhen measuring the thickness, a zone 10 mm wide from the edges of the product shall be disregarded. Table 4 Material groups Group I EN AW-1
47、080A, EN AW-1070A, EN AW-1050A, EN AW-1200 EN AW-3003, EN AW-3103, EN AW-3005, EN AW-3105A EN AW-4006, EN AW-4007 EN AW-5005, EN AW-5050 EN AW-8011A Group II EN AW-3004, EN AW-3104 EN AW-5049, EN AW-5251, EN AW-5052, EN AW-5154A EN AW-5454, EN AW-5754 BS EN 851:2014EN 851:2014 (E) 10 Table 5 Circle
48、- Flatness tolerances Specified thickness mm Maximum total deviation dmax/ D % Maximum partial deviation (for a chord of at least 300 mm) dmax/ D % Over Up to 0,2 0,5 By agreement By agreement 0,5 3,0 0,4 0,5 3,0 6,0 0,4 0,4 6,0 12,0 0,3 0,4 Key a straightedge b circle d deviation from flatness D di
49、ameter of circle For further details see 6.4. Figure 1 Arch BS EN 851:2014EN 851:2014 (E) 11 Key d deviation from flatness L length of buckle (chord) For further details see 6.4. Figure 2 Buckle Key a sliver b total burr c raised edge For further details see 6.5. Figure 3 Edge burr BS EN 851:2014EN 851:2014 (E) 12 Bibliography 1 EN 573-3, Aluminium and aluminium alloys -
