BS EN 1562-2012 Founding Malleable cast irons《铸造 可锻铸铁》.pdf

1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationFounding Malleable cast ironsBS EN 1562:2012National forewordThis British Standard is the UK implementation of EN 1562:2012. It super-sedes BS EN 1562:1997 which is withdrawn.The

2、 UK participation in its preparation was entrusted to Technical CommitteeISE/111, Steel Castings and Forgings.A list of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisions of acontract. Users

3、 are responsible for its correct application. The British Standards Institution 2012Published by BSI Standards Limited 2012ISBN 978 0 580 64236 4ICS 77.080.10Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of the

4、 StandardsPolicy and Strategy Committee on 31 March 2012.Amendments issued since publicationAmd. No. Date Text affectedBRITISH STANDARDBS EN 1562:2012EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 1562 March 2012 ICS 77.080.10 Supersedes EN 1562:1997English Version Founding - Malleable cast ir

5、ons Fonderie - Fontes mallables Gieereiwesen - Temperguss This European Standard was approved by CEN on 14 January 2012. 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 withou

6、t any alteration. Up-to-date lists and bibliographical references concerning 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 la

7、nguage made by translation under the responsibility of a CEN member 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, Denm

8、ark, Estonia, Finland, France, 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 N

9、ORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1562:2012: EBS EN 1562:2012EN 1562:2012 (E) 2 Contents Page Foreword 3g3Introduct

10、ion .4g31g3 Scope 5g32g3 Normative references 5g33g3 Terms and definitions .5g34g3 Designation 6g35g3 Order information 6g36g3 Manufacture 6g37g3 Requirements .7g37.1g3 General 7g37.2g3 Tensile strength and elongation 7g37.3g3 0,2 % Proof strength 7g37.4g3 Brinell hardness .7g37.5g3 Impact energy .7

11、g38g3 Samples . 10g38.1g3 General . 10g38.2g3 Cast samples . 10g39g3 Test methods . 12g39.1g3 Tensile test 12g39.2g3 0,2 % proof strength . 12g39.3g3 Brinell hardness 12g39.4g3 Impact test . 13g310g3 Retests . 13g310.1g3 Need for retests. 13g310.2g3 Test validity . 13g310.3g3 Non-conforming test res

12、ults 14g310.4g3 Heat treatment of samples and castings 14g311g3 Inspection documentation . 14g3Annex A (informative) Comparison of malleable cast iron material designations according EN 1560 and ISO/TR 15931 1, 6 . 15g3Annex B (informative) Un-notched impact test . 16g3Annex C (Informative) Signific

13、ant technical changes between this European standard and the previous edition 17g3Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC . 18g3Bibliography . 19g3BS EN 1562:2012EN 1562:2012 (E) 3 Foreword This document (EN 1562:2012

14、) has been prepared by Technical Committee CEN/TC 190 “Foundry technology”, the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2012, and conflicting

15、 national standards shall be withdrawn at the latest by September 2012. Attention is drawn to the possibility that some of the elements of this 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

16、supersedes EN 1562:1997. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part

17、 of this document. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 6 “Malleable cast iron” to revise EN 1562:1997. Annex C provides details of significant technical changes between this European Standard and the previous edition. According to the CEN/CENELEC Inte

18、rnal 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxem

19、bourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 1562:2012EN 1562:2012 (E) 4 Introduction This European Standard classifies malleable cast irons into two groups. The first group is concerned with decarb

20、urized irons referred to as whiteheart malleable cast iron. The second group is non-decarburized irons referred to as blackheart malleable cast iron. Both groups, except completely decarburized whiteheart malleable cast iron, contain free carbon as graphite, called temper carbon. Both groups have gr

21、ades with structures that can range from ferrite to pearlite and/or other transformation products of austenite. Materials are designated in terms of tensile strength and percentage elongation. Weldablility is an important property of malleable cast irons. Malleable cast irons have good impact resist

22、ance and ductility at low temperatures. In this standard, a new designation system by number, as established in EN 1560 1, is given. NOTE This designation system by number is based on the principles and the structure as set out in EN 10027-2 2 and so corresponds with the European numbering system fo

23、r steel and other materials. Some malleable cast iron grades can be used for pressure equipment. The permitted material grades of malleable cast iron for pressure applications and the conditions for their use are given in specific product or application standards. For the design of pressure equipmen

24、t, specific design rules apply. Annex ZA gives information relating to the conformance of permitted malleable cast iron grades to the Pressure Equipment Directive 97/23/EC. BS EN 1562:2012EN 1562:2012 (E) 5 1 Scope This European Standard defines grades and the corresponding requirements for malleabl

25、e cast irons. This European standard specifies five grades of whiteheart malleable cast iron and nine grades of blackheart malleable cast iron, based on mechanical properties measured on cast samples (which are test pieces). This European Standard specifies Brinell hardness values determined only wh

26、en these values are requested by the purchaser. This European Standard does not cover technical delivery conditions for malleable cast iron castings. Reference should be made to EN 1559-1 3 and EN 1559-3 4. This European Standard does not cover chemical composition, except phosphorous (see Clause 6)

27、. Grade EN-GJMB-300-6 (5.4100) malleable cast iron shall not be used for any pressure application, e. g. also pressure applications not covered by the Pressure Equipment Directive 97/23/EC. 2 Normative references The following documents, in whole or in part, are normatively referenced in this docume

28、nt and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 764-5:2002, Pressure equipment Part 5: Compliance and inspection Documentation of materials

29、 EN 10204:2004, Metallic products Types of inspection documents EN ISO 148-1:2010, Metallic materials Charpy pendulum impact test Part 1: Test method (ISO 148-1:2009) EN ISO 6506-1, Metallic materials Brinell hardness test Part 1: Test method (ISO 6506-1) EN ISO 6892-1:2009, Metallic materials Tensi

30、le testing Part 1: Method of test at room temperature (ISO 6892-1:2009) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 malleable cast iron cast material, mainly iron and carbon based, which solidifies in the as-cast condition with a graphite

31、-free (white) structure and achieves its final properties after a heat treatment 3.2 whiteheart malleable cast iron cast material, mainly iron and carbon based, which is cast white and then given a heat treatment in a decarburizing atmosphere to produce a material which is partially or entirely deca

32、rburized. Any remaining graphite is in the form of temper carbon 3.3 blackheart malleable cast iron cast material, mainly iron and carbon based, which is cast white and then given a non-decarburizing heat treatment, to produce a material in which all graphite is in the form of temper carbon BS EN 15

33、62:2012EN 1562:2012 (E) 6 3.4 primary graphite graphite which precipitates in the flake form during solidification Note 1 to entry: Primary graphite is more correctly referred to as eutectic graphite. 3.5 cast sample quantity of material cast to represent the cast material, including separately cast

34、 sample and side-by-side cast sample 3.6 separately cast sample sample cast in a separate sand mould under representative manufacturing conditions and material grade 3.7 side-by-side cast sample sample cast in the mould alongside the casting, with a joint running system 3.8 relevant wall thickness w

35、all thickness representative of the casting, defined for the determination of the size of the cast samples to which the mechanical properties apply 4 Designation The material shall be designated either by symbol or by number as given in Table 1 or Table 2. NOTE Comparison of EN 1562 grade designatio

36、ns to the grades from ISO 5922:2005 5, is given in Annex A. 5 Order information The following information shall be supplied by the purchaser: a) the number of this European Standard; b) the designation of the material; c) the relevant wall thickness of the casting; d) any special requirements. All r

37、equirements shall be agreed between the manufacturer and the purchaser by the time of acceptance of the order e.g. technical delivery conditions according to EN 1559-1 and EN 1559-3. 6 Manufacture The method of manufacture of malleable cast iron as well as its chemical composition and heat treatment

38、 shall be left to the discretion of the manufacturer, who shall ensure compliance with the property requirements given in this European Standard for the material ordered. NOTE To produce structures such as ferrite, pearlite or other transformation products of austenite, both material types (groups)

39、depend upon either the malleablising heat treatment or the subsequent additional heat treatment and/or additions of alloying elements. For castings intended to be given additional treatment (such as galvanizing) and/or in the case of castings for use at low temperatures to optimize the impact energy

40、 of the material, the phosphorous content should not exceed 0,10 %. BS EN 1562:2012EN 1562:2012 (E) 7 For malleable cast iron materials to be used in special applications, the chemical composition and any special heat treatment may be the subject of an agreement between the manufacturer and the purc

41、haser by the time of acceptance of the order. 7 Requirements 7.1 General The property values apply to malleable cast irons cast in sand moulds or moulds of comparable thermal behaviour. Subject to amendments to be agreed upon in the order, they can apply to castings obtained by alternative methods,

42、when agreed between the manufacturer and purchaser by the time of acceptance of the order. The material designation is based on the minimum mechanical properties obtained in cast samples with a diameter of 12 mm. Mechanical properties are wall thickness dependent as shown in Tables 1, 2 and 3. 7.2 T

43、ensile strength and elongation When tested in accordance with 9.1, the values of tensile strength and percentage elongation after fracture (hereafter referred to as elongation) shall be in accordance with the requirements specified in Tables 1, 2 and 3. 7.3 0,2 % Proof strength When requested by the

44、 purchaser and agreed at the time of acceptance of the order, 0,2 % proof strength shall be determined in accordance with 9.2 and the values shall be in accordance with the requirements specified in Tables 1, 2 and 3. 7.4 Brinell hardness Brinell hardness and its range values shall only be specified

45、 when agreed between the manufacturer and the purchaser by the time of acceptance of the order. Guidance values for Brinell hardness are listed in Tables 1, 2 and 3. The method of testing and sampling shall be agreed in accordance with the method specified in 9.3. 7.5 Impact energy The minimum impac

46、t energy values measured on V-notched test pieces machined from cast samples given in Table 3 at room temperature, if applicable, shall only be determined if specified by the purchaser by the time of acceptance of the order. Impact energy testing is normally requested for EN-GJMB-350-10 only. The me

47、thod of testing shall be in accordance with 9.4. NOTE If the purchaser requires impact testing to be performed on whiteheart malleable cast iron or other grades of blackheart malleable cast irons, then the Charpy un-notched test should be used (see informative Annex B). BS EN 1562:2012EN 1562:2012 (

48、E) 8 Table 1 Mechanical properties of whiteheart malleable cast irons Material designation Relevant wall thickness Nominal diameter of test piece Tensile strength Elongation 0,2 % proof strength Brinell hardness(for informationonly) t d RmA3,4Rp0,2mm mm MPa % MPa HBW Symbol Number min. min. min. max

49、.EN-GJMW-350-4 5.4200 230 t 3 6 270 10 a3 7 15 360 3 EN-GJMW-360-12b5.4201 200 t 3 6 280 16 a3 7 15 370 7 200 EN-GJMW-400-5 5.4202 220 t 3 6 300 12 a3 7 15 420 4 230 EN-GJMW-450-7 5.4203 220 t 3 6 330 12 a3 7 15 480 4 280 EN-GJMW-550-4 5.4204 250 t 3 6 a3 7 15 570 3 350 NOTE The figures given in bold indicate the minimum tensile strength, proof strength and minimum elongation A3,4to which the material designation of the grade is related and the preferred nominal diameter of the test piece.