DIN EN 13835-2012 Founding - Austenitic cast irons German version EN 13835 2012《铸造 奥氏体铸铁》.pdf

1、April 2012Translation by DIN-Sprachendienst.English price group 16No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 7

2、7.080.10!$N8“1884321www.din.deDDIN EN 13835Founding Austenitic cast ironsEnglish translation of DIN EN 13835:2012-04Gieereiwesen Austenitische GusseisenEnglische bersetzung von DIN EN 13835:2012-04Fonderie Fontes austnitiquesTraduction anglaise de DIN EN 13835:2012-04SupersedesDIN EN 13835:2006-08ww

3、w.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 37 pages03.12 DIN EN 13835:2012-04 2 A comma is used as the decimal marker. National foreword This standard has been prepared by Technical Committee CEN/TC 190 “Foundry technology” (Secretar

4、iat: DIN, Germany), Working Group WG 8 “High alloyed cast iron” (Secretariat: BSI, United Kingdom). The responsible German body involved in its preparation was the Normenausschuss Gieereiwesen (Foundry Practice Standards Committee), Working Committee NA 036-00-01 AA Gusseisenwerkstoffe. Amendments T

5、his standard differs from DIN EN 13835:2006-08 as follows: a) in Clause 3 further terms and definitions have been included; b) a new designation system by number, as established in DIN EN 1560, has been used; c) the relevant wall thickness of castings has been indicated; d) the different types of ca

6、st samples have been specified in detail; e) in Figure 1, Types I, II, III and IV have been deleted; f) Figure 3 has been modified and extended to include side by side cast samples; g) Figure 4 “Cast-on samples” has been included; h) Subclause 7.3 “Microstructure” has been included; i) the following

7、 new Annexes have been added: 1) Annex B “Comparison of austenitic cast iron material designations according to EN 1560 and ISO/TR 15931”; 2) Annex F “Sectioning procedure for cast samples”; j) Annex E has been restructured; k) former Annex F “Cross reference to other standards” has been deleted; l)

8、 the bibliography has been moved to the end of the standard; m) the standard has been editorially revised. Previous editions DIN 1694: 1966-10, 1981-09 DIN 1694 Supplement 1:1966-10 DIN 1694 Supplement 1: 1981-09 DIN EN 13835: 2003-02, 2006-08 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 138

9、35 January 2012 ICS 77.080.10 Supersedes EN 13835:2002English Version Founding - Austenitic cast irons Fonderie - Fontes austnitiques Gieereiwesen - Austenitische Gusseisen This European Standard was approved by CEN on 26 November 2011. CEN members are bound to comply with the CEN/CENELEC Internal R

10、egulations 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 CEN-CENELEC Management Centre or to any CEN m

11、ember. 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 CEN-CENELEC Management Centre has the same status as the official versions

12、. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sloven

13、ia, Spain, Sweden, Switzerland, Turkey and United Kingdom. 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 13835:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN D

14、E NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEN 13835:2012 (E) 2 Contents Page Foreword 3Introduction .41 Scope 52 Normative references 53 Terms and definitions .54 Designation 65 Order information 66 Manufacture 67 Requirements .77.1 Chemical composition 77.2 Mechanical properties .77.3 Microstruct

15、ure . 128 Sampling 128.1 General . 128.2 Cast samples . 128.3 Samples cut from a casting . 149 Testing . 179.1 Chemical analysis . 179.2 Tensile test 189.3 Impact test . 199.4 Hardness test 209.5 Microstructure examination . 209.6 Physical properties . 2010 Retests . 2010.1 Need for retests . 2010.2

16、 Test validity . 2110.3 Nonconforming test results . 2110.4 Heat treatment of samples and castings 2111 Inspection documentation . 21Annex A (informative) Properties and applications of the austenitic cast iron grades 22Annex B (informative) Comparison of austenitic cast iron material designations a

17、ccording to EN 1560 and ISO/TR 15931 3, 6 . 23Annex C (informative) Heat treatment 24Annex D (informative) Effect of alloying elements . 25Annex E (informative) Additional information on mechanical and physical properties . 26Annex F (normative) Sectioning procedure for cast samples . 31Annex G (inf

18、ormative) Sample preparation for the determination of physical properties . 32Annex H (informative) Significant technical changes between this European Standard and the previous edition 33Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directiv

19、e 97/23/EC . 34Bibliography . 35DIN EN 13835:2012-04 EN 13835:2012 (E) 3 Foreword This document (EN 13835:2012) 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,

20、either by publication of an identical text or by endorsement, at the latest by July 2012, and conflicting national standards shall be withdrawn at the latest by July 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights other than

21、those identified above. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 13835:2002. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and support

22、s essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 8 “High alloyed cast iron“ to revise EN 13835:2002. Annex H p

23、rovides details of significant technical changes between this European Standard and the previous edition. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croa

24、tia, Cyprus, Czech Republic, Denmark, 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 the United Kingdom. DIN EN 13835:2012-04

25、 EN 13835:2012 (E) 4 Introduction This European Standard classifies a range of cast irons principally used for their heat and corrosion resistance properties. These properties are obtainable from the engineering grades in this European Standard. The special purpose grades also exhibit heat and corro

26、sion resistance properties, but are used principally for their magnetic properties, or very low expansion characteristics. The austenitic cast irons are a range of high-alloyed materials with an austenitic matrix, containing nickel, manganese and sometimes copper and chromium. Carbon is present eith

27、er as graphite flakes or as spheroids. The spheroidal graphite grades have superior mechanical properties. The properties of the austenitic cast irons depend upon them having the appropriate structure and mechanical properties for the application. These properties are dependent upon the control of m

28、etal composition within the specified grades and the metal processing route. Typical applications for the various grades are given in Annex A. In this European Standard a new designation system by number, as established in EN 1560 3, is given. NOTE This designation system by number is based on the s

29、tructure and rules of EN 10027-2 4 and so corresponds with the European numbering system for steel and other materials. Some austenitic cast iron grades can be used for pressure equipment. The permitted material grades of austenitic cast iron for pressure applications and the conditions for their us

30、e are given in specific product or application standards. For the design of pressure equipment, specific design rules apply. Annex ZA gives information relating to the conformance of permitted austenitic cast iron grades to the Pressure Equipment Directive 97/23/EC. DIN EN 13835:2012-04 EN 13835:201

31、2 (E) 5 1 Scope This European Standard specifies the grades and corresponding requirements for austenitic cast irons. These requirements are specified in terms of: graphite form and metal structure: either flake or spheroidal graphite in an austenitic matrix; chemical composition: as given for each

32、of the grades; mechanical properties measured on machined test pieces prepared from cast samples. This standard does not cover technical delivery conditions for iron castings, see EN 1559-1 1 and EN 1559-3 2. 2 Normative references The following referenced documents are indispensable for the applica

33、tion of this document. 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 EN 10204:2004, Metalli

34、c products Types of inspection documents EN ISO 148-1:2010, Metallic materials Charpy impact test Part 1: Test method (ISO 148-1:2009) EN ISO 945-1, Microstructure of cast irons Part 1: Graphite classification by visual analysis (ISO 945-1) EN ISO 6506-1, Metallic materials Brinell hardness test Par

35、t 1: Test method (ISO 6506-1) EN ISO 6892-1:2009, Metallic materials Tensile 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 austenitic cast iron cast material with an auste

36、nitic matrix which is iron, carbon and silicon based and alloyed with nickel, manganese, copper and/or chromium in order to stabilize the austenitic structure at room temperature; the graphite can be present in flake or spheroidal form 3.2 cast sample quantity of material cast to represent the cast

37、material, including separately cast sample, side by side cast sample and cast-on sample 3.3 separately cast sample sample cast in a separate sand mould under representative manufacturing conditions and material grade DIN EN 13835:2012-04 EN 13835:2012 (E) 6 3.4 side-by-side cast sample sample cast i

38、n the mould alongside the casting, with a joint running system 3.5 cast-on sample sample attached directly to the casting 3.6 relevant wall thickness wall thickness representative of the casting defined for the determination of the size of the cast samples to which the mechanical properties apply 4

39、Designation The material shall be designated either by symbol or by number as given in Tables 1 to 4. NOTE The comparison of EN 13835 grade designations with the grades from ISO 2892:2007 5 is given in Annex B. 5 Order information The following information shall be supplied by the purchaser: a) numb

40、er of this European Standard; b) designation of the material; c) relevant wall thickness; d) any special requirements. All requirements 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

41、1559-3). 6 Manufacture Unless otherwise specified by the purchaser, the method of manufacture of austenitic cast irons shall be left to the discretion of the manufacturer. The manufacturer shall ensure that the requirements defined in this European Standard are met for the material grade specified i

42、n the order. All agreements between the manufacturer and the purchaser shall be made by the time of acceptance of the order. NOTE For certain applications heat treatment of austenitic cast irons is beneficial, but should only be specified where service conditions demand such treatment. The heat trea

43、tment processes employed are stress relieving and high temperature stabilising treatments. Details of these treatments are given in Annex C. DIN EN 13835:2012-04 EN 13835:2012 (E) 7 7 Requirements 7.1 Chemical composition The chemical composition of austenitic cast iron grades shall be in accordance

44、 with Table 1 for the engineering grades and Table 2 for the special purpose grades. Spheroidal graphite grades are produced either by magnesium treatment or by treatment with another suitable nodulariser. Unless otherwise specified, other elements may be present at the discretion of the manufacture

45、r provided that they do not alter the structure or adversely affect the properties. If the presence of any element specified in Tables 1 or 2 is required to be outside the limits indicated, or if any other elements are required, their contents shall be agreed between the manufacturer and the purchas

46、er and specified in the order. For information about the effect of alloying elements see Annex D. 7.2 Mechanical properties 7.2.1 General The property values given in Tables 3 and 4 apply to austenitic cast iron cast in sand moulds or moulds of comparable thermal behaviour. Subject to amendments to

47、be agreed upon in the order, they can apply to castings obtained by alternative methods. Requirements regarding mechanical testing are described in 9.2 and 9.3. NOTE Tensile testing requires sound test pieces in order to guarantee pure uni-axial stress during the test. Additional information on mech

48、anical and physical properties is given in Annex E. 7.2.2 Test pieces machined from cast samples The mechanical properties of the grades of austenitic cast irons obtained from cast samples with a thickness or a diameter equal to or smaller than 25 mm shall be in accordance with: Table 3 for austenitic spheroidal graphite cast iron grades, with specified minimum impact energy; Table