1、|BRITISH STANDARD BS EN 12844:1998ICS 77.150.60NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWZinc and zinc alloys Castings SpecificationsIncorporating corrigendum September 2009This British Standard was published under the authority of the Standards Committee and comes into e
2、ffect on 15 May 1999 BSI 2009ISBN 978 0 580BS EN 12844:1998AmendmentsNational forewordThis British Standard is the UK implementation of EN 12844:1998. Together with BS EN 1774:1997 it partially supersedes BS 1004:1972 and DD 139:1986 which are withdrawn. The UK participation in its preparation was e
3、ntrusted to Technical Committee NFE/8, Zinc and zinc alloys.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Com
4、pliance with a British Standard cannot confer immunity from legal obligations./c issued since publication67529 4orrigendaDate Comments 30 September 2009 Modification of supersession details in the National foreword, and alignment of BSI and CEN publicationdatesCENEuropean Committee for Standardizati
5、onComite Europeen de NormalisationEuropaisches Komitee fu r NormungCentral Secretariat: rue de Stassart 36, B-1050 Brussels 1998 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nationalMembers.Ref. No. EN 12844:1998 EEUROPEAN STANDARDEN 12844NORME EUROPEENNEEUR
6、OPAISCHE NORMNovember 1998ICS 77.150.60Descriptors: founding, castings, zinc, zinc alloys, specifications, definitions, designation, chemical composition, sampling, chemicalanalysis, marking, labelling, mechanical propertiesEnglish versionZinc and zinc alloys Castings SpecificationsZinc et alliages
7、de zinc Pieces moulees SpecificationsZink und Zinklegierungen Gustu cke SpezifikationenThis European Standard was approved by CEN on 22 October 1998.CEN members are bound to comply with the CEN/CENELEC Internal Regulationswhich stipulate the conditions for giving this European Standard the status of
8、 anational standard without any alteration. Up-to-date lists and bibliographicalreferences concerning such national standards may be obtained on application tothe Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German).A version in
9、any other language made by translation under the responsibility of aCEN member into its own language and notified to the Central Secretariat has thesame status as the official versions.CEN members are the national standards bodies of Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany
10、, Greece, Iceland, Ireland, Italy,Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland andUnited Kingdom.Page 2 BSI 2009ForewordThis European Standard has been prepared byTechnical Committee CEN/TC 209, Zinc and zinc alloys,the Secretariat of which is held by AFNOR.This European Sta
11、ndard shall be given the status of anational standard, either by publication of an identicaltext or by endorsement, at the latest by May 1999, andconflicting national standards shall be withdrawn atthe latest by May 1999.This European Standard is one of a series concerningzinc and zinc alloys for fo
12、undry purposes.According to the CEN/CENELEC Internal Regulations,the national standards organizations of the followingcountries are bound to implement this EuropeanStandard: Austria, Belgium, Czech Republic, Denmark,Finland, France, Germany, Greece, Iceland, Ireland,Italy, Luxembourg, Netherlands, N
13、orway, Portugal,Spain, Sweden, Switzerland and the United Kingdom.ContentsForeword 21 Scope 32 Normative references 33 Definitions 34 Casting designation 34.1 General 34.2 Designation by number 34.3 Short designation 35 Manufacture 36 Ordering information 37 Requirements 37.1 Chemical composition 37
14、.2 Additional requirements 38 Sampling and analysis 58.1 Sampling 58.2 Analysis 59 Marking and labelling 510 Inspection documents 511 Rounding of numbers 5Annex A (informative) Relationship between thezinc alloy designation for castings used in thisstandard and the corresponding designationsprevious
15、ly used in a number of countries 6Annex B (informative) Properties of zinc alloy diecastings at 20 8C 7Annex C (informative) Recycling mark 8EN 12844:1998BS EN 12844:1998Page 3 BSI 20091 ScopeThis European Standard specifies the designation, chemical composition, marking and other requirements for z
16、inc alloy castings.2 Normative referencesThis European 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 amend
17、ments 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 edition of the publication referred to applies.EN 1559-1, Founding Technical conditions ofdelivery Part 1 : General.EN 1559-6, F
18、ounding Technical conditions ofdelivery Part 6 : Additional requirements for zincalloy castings.EN 1774, Zinc and zinc alloys Alloys for foundrypurposes Ingot and liquid.EN 10204, Metallic products Types of inspectiondocuments.EN 12019, Zinc and zinc alloys Optical emissionspectrometric analysis.ISO
19、 7000, Graphical symbols for use on equipment Index and synopsis.3 DefinitionsFor the purposes of this standard, the following definitions apply.3.1 pressure die casting metal object produced by injecting molten metal under high pressure into a metal die3.2 permanent mould casting metal object produ
20、ced by introducing molten metal by gravity or low pressure into a mould or die constructed of durable material, usually iron or steel, and allowing it to solidifyNOTE When a graphite mould is used, the process is known as graphite permanent mould casting.3.3 sand casting metal object produced by int
21、roducing molten metal by gravity into a sand mould and allowing it to solidify4 Casting designation4.1 GeneralZinc alloy castings conforming to this standard shall be designated by number or short designation in accordance with the system given in EN 1774, but having a letter P in the second charact
22、er position.P indicates that the product is a casting.4.2 Designation by numberThe alloy number shall be in accordance with the system given in EN 1774.EXAMPLE A zinc alloy casting made from an alloy consisting nominally of 4 % aluminium, 1 % copper, remainder zinc, shall be designated: ZP0410.4.3 S
23、hort designationThe short designation shall be in accordance with the system given in EN 1774.EXAMPLE A zinc alloy casting made from an alloy consisting nominally of 4 % aluminium, 1 % copper, remainder zinc, shall be designated: ZP5.5 ManufactureThe castings according to this standard shall be manu
24、factured from:a) zinc alloy ingot or liquid conforming to one of the alloys given in EN 1774; and/orb) the die casters own process returns, e.g. sprues, runners and overflows; and/orc) the die casters own castings rejected from foundry secondary operations.Used recycled materials and all other mater
25、ials which could cause contamination such as shredder scrap shall not be used.6 Ordering informationIn order to facilitate the enquiry, order and confirmation of order procedures between the purchaser and the supplier, the purchaser shall state on the enquiry and order the following information:a) t
26、he number of this European Standard (EN 12844);b) the designation of the casting required (see clause 4);c) any special requirements which shall be agreed by the time of acceptance of the order (see EN 1559-1 and EN 1559-6).7 Requirements7.1 Chemical compositionZinc alloy castings shall conform to t
27、he relevant chemical composition given in Table 1.7.2 Additional requirementsAny additional requirements shall be agreed between the purchaser and the supplier by the time of acceptance of the order.EN 12844:1998BS EN 12844:1998 BSI 2009Page 4EN 12844:1998Table1Chemicalcompositionofzincalloycastings
28、Chemical composition in % (m/m)AlloynumberShortdesignationColourcodeElementAlCuMgCrTiPbCdSnFeNiSiZnZP0400ZP3white/yellowmin.3,70,025Remaindermax.4,30,10,060,0050,0050,0020,050,020,03ZP0410ZP5white/blackmin.3,70,70,025Remaindermax.4,31,20,060,0050,0050,0020,050,020,03ZP0430ZP2white/greenmin.3,72,70,0
29、25Remaindermax.4,33,30,060,0050,0050,0020,050,020,03ZP0610ZP6white/whitemin.5,41,1Remaindermax.6,01,70,0050,0050,0050,0020,050,020,03ZP0810ZP8white/bluemin.8,00,80,015Remaindermax.8,81,30,030,0060,0060,0030,060,020,045ZP1110ZP12white/orangemin.10,50,50,015Remaindermax.11,51,20,030,0060,0060,0030,070
30、,020,06ZP2720ZP27white/violetmin.25,02,00,01Remaindermax.28,02,50,020,0060,0060,0030,10,020,08ZP0010ZP16white/brownmin.0,011,00,10,15Remaindermax.0,041,50,020,20,250,0050,0050,0040,050,05BS EN 12844:1998Page 5 BSI 20098 Sampling and analysis8.1 SamplingFor routine sampling of a batch of castings for
31、 chemical analysis, the sampling techniques and frequency shall be at the discretion of the supplier.In case of dispute, the procedures and frequency of sampling for chemical analysis shall be agreed between the purchaser and the supplier.8.2 Analysis8.2.1 For the routine testing of castings, the me
32、thods of analysis to be used on the samples obtained in accordance with 8.1 shall be at the discretion of the supplier.8.2.2 In the case of dispute concerning the conformity of the castings to the chemical composition limits, when the sample quantity is sufficient, the chemical composition shall be
33、determined on the samples obtained by optical emission spectrometric analysis, using the methods given in EN 12019.The analysis sample shall then be: a purpose made sample, prepared by remelting, to give a test piece having a minimum mass of 100 g. In this case, the selection of the samples shall be
34、 such that it is representative of the tested lot; if the casting to be tested is too small and it is not possible to collect sufficient into a 100 g specimen, the sampling and test methods shall be agreed between the parties, and expert knowledge should be sought.A test report shall give full detai
35、ls of the analysis sample.9 Marking and labellingWhere possible, the castings shall be marked or labelled with the following information unless the supplier and purchaser agree to omit some of the following markings:a) producers mark;b) short designation (see Table 1);c) recycling mark (see annex C)
36、;d) production period.10 Inspection documentsIf requested by the purchaser at the time of ordering, the supplier shall furnish inspection documents with each consignment of castings. The documentation shall be as requested by the purchaser and shall be in accordance with either a) or b) as follows:a
37、) a certificate in accordance with EN 10204, based either on: tests carried out on the delivered batch of castings; or the producers process control systems;b) a declaration of conformity of the consignment with the order requirements, signed by the suppliers authorized representative.11 Rounding of
38、 numbersIn expressing the results for the analysis, the values obtained shall be rounded in one step to the same number of figures used to express the specified limit in Table 1. The following rules shall be used for rounding:a) if the figure immediately after the last figure to be retained is less
39、than 5, 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 5, the last figure to be retained shall be increased by 1.EN 12844:1998BS EN 12844:1998 BSI 2009Page 6Annex A (informative)Relationship between
40、 the zinc alloy designation forcastingsused in this standard and the corresponding designations previouslyused in a number of countriesTableA.1FormernationalzincalloydesignationsandcorrespondingdesignationsinthisstandardAlloynumberShortdesignationU.K.BS1004FranceNFA55-010GermanyDIN1743-2SpainUNE3730
41、2-88ItalyUNI3717UNI9408NorwayNS16930SwedenSIS147020PortugalNP1632/31U.S.A.ASTMB240ASTMB669ZP0400ZP3AlloyAZ-A4Z400ZnAl4G-ZnAl41) ZnAl4ZnAl4FZnAl4MgAG40AZP0410ZP5AlloyBZ-A4U1Z410ZnAl4Cu1G-ZnAl4Cu11)ZnAl4Cu1ZnAl4Cu1FZnAl4Cu1MgAG41AZP0430ZP2Z-A4U3Z430ZnAl4Cu3G-ZnAlC31) AG43AZP0610ZP6Z610ZnAl6Cu1ZP0810ZP
42、8Z-A8U1G-ZnAl8Cu12) ZA8ZP1110ZP12ZnAl11Cu1G-ZnAl11Cu12)ZA12ZP2720ZP27G-ZnAl27Cu22)ZA27ZP0010ZP161)According to UNI 3717.2)According to UNI 9408.EN 12844:1998BS EN 12844:1998Page 7 BSI 2009Annex B (informative) Properties of zinc alloy diecastings at 208C TableB.1Propertiesofzincalloydiecastingsat208
43、CAlloynumberZP0400ZP0410ZP0430ZP06101) ZP0810ZP1110ZP2720ZP0010Short designation ZP3ZP5ZP2ZP6ZP8ZP12ZP27ZP16Colourcode white/yellowwhite/blackwhite/greenwhite/whitewhite/bluewhite/orangewhite/violetwhite/brownTensilestrengthMPa280330355370400425220Elongation A(50mm)% 10 5 5 8 5 2,5 Brinell Hardness
44、HBS500-10-308392102100100120Impactenergy(un-notched 6,3mm36,3mmbar) J575859403010YoungsmodulusGPa8585858682780,2%YieldstrengthMPa200250270220300370Fatiguestrength(108 cycles)MPa485660100145Creepstressfor0,5%elongation (3000h) MPa80100130160100Densitykg/dm3 6,76,76,86,56,3657,2Meltingrange8C382to3873
45、79to388379to389375to395375to404377to432377to484410to420Coefficientofthermalexpansion mm/(mK)27272725232426ThermalconductivityW/(mK)113110119115115116126109Electricalconductivity%IACS2626262728283024NOTE 1 The values given in thistable are mid-range values and theyare given for guidance only.NOTE 21M
46、Pa is equivalent to 1 N/mm2.NOTE 31GPa is equivalent to 1 kN/mm2.NOTE 4100 % IACS is equivalent to 58 Sm/mm2.1)Normally not supplied in die-cast form.EN 12844:1998BS EN 12844:1998Page 8 BSI 2009Annex C (informative)Recycling markThe recycling mark (Figure C.1) shall be in accordance with ISO 7000, s
47、ymbol number 1135-BA.X short designationFigure C.1 Recycling markEXAMPLE Zinc alloy casting ZP0410EN 12844:1998BS EN 12844:1998blankBSI Group Headquarters389 Chiswick High Road,London W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards Institution (BSI)BSI is the independent national body
48、 responsible for preparing British Standards. It presents the UK view on standards in Europe and at theinternational level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments oreditions.It is the constant aim of BSI to improve the quality of our products and services.We would be grateful if anyone finding an inaccuracy or ambiguity while usingthis British Standard would i
