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1、 AS 18312007 ISO 1083:2004 Australian Standard Ductile cast iron AS 18312007 This Australian Standard was prepared by Committee MT-001, Iron and Steel. It was approved on behalf of the Council of Standards Australia on 8 December 2006. This Standard was published on 29 January 2007. The following ar
2、e represented on Committee MT-001: Australian Railway Association Australian Building Codes Board Australian Foundry Institute Australian Industry Group Australian Steel Industry Bureau of Steel Manufacturers of Australia Institute of Materials Engineering Research Association New Zealand Heavy Engi
3、neering Research Association This Standard was issued in draft form for comment as DR 06612. Standards Australia wishes to acknowledge the participation of the expert individuals that contributed to the development of this Standard through their representation on the Committee and through public com
4、ment period. Keeping Standards upKeeping Standards upKeeping Standards upKeeping Standards up- - - -totototo- - - -datedatedatedate Australian Standards are living documents that reflect progress in science, technology and systems. To maintain their currency, all Standards are periodically reviewed,
5、 and new editions are published. Between editions, amendments may be issued. Standards may also be withdrawn. It is important that readers assure themselves they are using a current Standard, which should include any amendments that may have been published since the Standard was published. Detailed
6、information about Australian Standards, drafts, amendments and new projects can be found by visiting www.standards.org.auwww.standards.org.auwww.standards.org.auwww.standards.org.au Standards Australia welcomes suggestions for improvements, and encourages readers to notify us immediately of any appa
7、rent inaccuracies or ambiguities. Contact us via email at mailstandards.org.aumailstandards.org.aumailstandards.org.aumailstandards.org.au, or write to Standards Australia, GPO Box 476, Sydney, NSW 2001. AS 18312007 Australian Standard Ductile cast iron Originated as AS G91961. Previous edition AS 1
8、8312002. Fourth edition 2007. COPYRIGHT Standards Australia All rights are reserved. No part of this work may be reproduced or copied in any form or by any means, electronic or mechanical, including photocopying, without the written permission of the publisher. Published by Standards Australia, GPO
9、Box 476, Sydney, NSW 2001, Australia ISBN 0 7337 7989 1 ii PREFACE This Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee MT-001, Iron and Steel, to supersede AS 18312002, Ductile cast iron. After consultation with stakeholders in both countries, Standard Austral
10、ia and Standards New Zealand decided to develop this Standard as an Australian, rather than an Australian/New Zealand Standard. This Standard is identical with, and has been reproduced from ISO 1083:2004, Spheroidal graphite cast ironsClassification. The objective of this Standard is to specify grad
11、es of spheroidal graphite cast irons by mechanical properties. This Standard is one of a series of Standards covering the range of tensile testing methods. The series comprises the following: AS 1830 Grey cast iron 1831 Ductile cast iron (this Standard) 1832 Malleable cast iron 1833 Austenitic cast
12、iron 1982 Methods for the measurement of case depth in steels 2027 Abrasive-resistant cast irons 2074 Cast steels 4314 FoundingPatterns, pattern equipment and coreboxes for the production of sand moulds and sand cores 4738 Metal castings 4738.1 Part 1: Ferrous sand moulded 5049 Cast ironDesignation
13、of microstructure of graphite 5052 Compacted (vermicular) graphite cast ironsClassification 5054 Ausferritic spheroidal graphite cast ironsClassification 5080 Ferrous materialsHeat treatmentGlossary of terms As this Standard is reproduced from an international standard, the following applies: (a) It
14、s number appears on the cover and title page while the international standard number appears only on the cover. (b) In the source text this International Standard should read this Australian Standard. (c) A full point substitutes for a comma when referring to a decimal marker. (d) Where the ISO Stan
15、dard number is shown (i.e. ISO 1083) in a ductile cast iron specification, it should be read as AS 1831. iii References to International Standards should be replaced by references to Australian Standards, as follows: Reference to International Standard Australian Standard ISO AS 148 SteelCharpy impa
16、ct test (V-notch) 1544 Methods for impact tests on metals 148-1 Part 1: Test method 1544.2 Method 2: Charpy V-notch test 148-2 Part 2: Verification of test macines 148-3 Part 3: Preparation and characterization of Charpy V reference test pieces for verification of test machines 945 Cast ironDesignat
17、ion of microstructure of graphite 5049 Cast ironDesignation of microstructure of graphite 6506 Metallic materialsBrinell hardness test 1816 Metallic materialsBrinell hardness test 65061 Part 1: Test method 1816.1 Part 1: Test method (ISO 6506- 1:1997, MOD) 6892 Metallic materialsTensile testing at a
18、mbient temperature 1394 Metallic materialsTensile testing at ambient temperature 4738 Metal castings TR 15931 Designation systems for cast irons and pig irons 4738.1 Part 1: Ferrous sand moulded The terms normative and informative are used to define the application of the annex to which they apply.
19、A normative annex is an integral part of a standard, whereas an informative annex is only for information and guidance. iv CONTENTS Page ISO 1083:2004(E) ISO 2004 All rights reserved iii Contents Page Forewordiv Introduction v 1 Scope1 2 Normative references .1 3 Terms and definitions.1 4 Designatio
20、n2 5 Order information2 6 Manufacture.2 7 Requirements 2 7.1 Test pieces machined from separately cast samples.2 7.2 Test pieces machined from cast-on samples 7 7.3 Test piece machined from samples cut from a casting9 7.4 Classification by hardness.10 7.5 Graphite structure.10 7.6 Matrix structure.1
21、0 8 Sampling10 8.1 General.10 8.2 Separately cast samples 10 8.3 Cast-on samples .12 8.4 Samples cut from a casting .14 8.5 Formation of test units and number of tests14 9 Test methods.15 9.1 Tensile test 15 9.2 Impact test .15 9.3 Hardness test 15 10 Retests .15 10.1 Need for retests.15 10.2 Test v
22、alidity .15 10.3 Non-conforming test results16 10.4 Heat treatment of samples and castings16 Annex A (normative) Spheroidal graphite cast irons with high silicon content17 Annex B (normative) Relationship between the elongation values obtained when using test pieces with Lo = 5 d and Lo = 4 d .19 An
23、nex C (informative) Toughness 20 Annex D (informative) Guidance values for 0,2 % proof stress for test pieces machined from samples cut from the castings 23 Annex E (normative) Classification as a function of hardness.24 Annex F (informative) Nodularity (or spheroidal graphite rate).27 Annex G (info
24、rmative) Additional information on mechanical and physical properties.28 Bibliography .31 v INTRODUCTION ISO 1083:2004(E) ISO 2004 All rights reserved v Introduction The properties of spheroidal graphite cast irons depend on their structure. The mechanical properties of the material can be evaluated
25、 on machined test pieces prepared from: separately cast samples; samples cast on to either the casting or the running system, hereafter referred to as cast-on sample; samples cut from a casting (only when an agreement is made between the manufacturer and the purchaser). The material grade is defined
26、 by mechanical properties measured on machined test pieces prepared from separately cast samples, cast-on samples or samples cut from the casting, by agreement between the manufacturer and the purchaser. If hardness is a requirement of the purchaser as being important for the application, then Annex
27、 E provides means for its determination. It is well known that tensile properties and hardness of spheroidal graphite cast iron are interrelated. When considered by the purchaser as being important for the application, both tensile and hardness properties may be specified. Some material grades may b
28、e suitable for pressure applications. Further technical data on spheroidal graphite cast irons is given in Annexes C and G. vi NOTES AUSTRALIAN STANDARD Ductile cast iron ISO 2004 All rights reserved 1 Spheroidal graphite cast irons Classification 1 Scope This International Standard defines the grad
29、es and the corresponding requirements for spheroidal graphite cast irons. This International Standard specifies a classification based on mechanical properties measured on machined test pieces prepared either from: separately cast samples; cast-on samples; samples cut from a casting. This Internatio
30、nal standard also specifies a classification as a function of hardness. This International Standard does not apply to spheroidal graphite cast iron used for pipes, fittings and accessories which are specified in accordance with ISO 2531 and ISO 7186. It does not apply to highly alloyed (austenitic)
31、spheroidal cast irons which are specified in accordance with ISO 2892. This International Standard does not apply to ausferritic cast irons which are specified in accordance with ISO 17804. 2 Normative references The following referenced documents are indispensable for the application of this docume
32、nt. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 148, Steel Charpy impact test (V-notch) ISO 945:1975, Cast iron Designation of microstructure of graphite ISO 6506-1, Metallic mater
33、ials Brinell hardness test Part 1: Test method ISO 6892, Metallic materials Tensile testing at ambient temperature ISO/TR 15931, Designation system for cast irons and pig irons 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 spheroidal graphi
34、te cast iron cast material, iron and carbon-based, the carbon being present mainly in the form of spheroidal graphite particles NOTE Spheroidal graphite cast iron is also known as ductile iron, and less commonly as nodular iron. 1 1 ISO 1083:2004(E) 2 ISO 2004 All rights reserved 3.2 graphite sphero
35、idizing treatment process that brings the liquid iron into contact with a substance to produce graphite in the predominantly spheroidal (nodular) form during solidification 3.3 relevant wall thickness section of the casting, agreed between the manufacturer and the purchaser, to which the determined
36、mechanical properties shall apply 4 Designation The material shall be designated in accordance with ISO/TR 15931. The relevant designations are given in Tables 1 to 4. 5 Order information The following information shall be supplied by the purchaser: a) the complete designation of the material; b) an
37、y special requirements that have to be agreed upon between the manufacturer and the purchaser by the time of acceptance of the order. 6 Manufacture The method of producing spheroidal graphite cast iron, and its chemical composition, shall be left to the discretion of the manufacturer who shall ensur
38、e that the requirements of this international Standard are met for the material grade specified in the order. NOTE For spheroidal cast irons to be used in special applications, the chemical composition and heat treatment may be the subject of an agreement between the manufacturer and the purchaser.
39、All agreements between the manufacturer and the purchaser shall be made by the time of the acceptance of the order. 7 Requirements 7.1 Test pieces machined from separately cast samples 7.1.1 General The mechanical properties of spheroidal graphite cast iron shall be as specified in Table 1 and, if a
40、pplicable, in accordance with the requirements given in 7.1.2 and Table 2. The requirements for grade ISO1083/JS/500-10/S shall be as specified in Annex A. 2 2 ISO 1083:2004(E) ISO 2004 All rights reserved 3 Table 1 Mechanical properties measured on test pieces machined from separately cast samples
41、Tensile strength 0,2 % proof stress Elongation Rm Rp0,2 A Material designation N/mm2 N/mm2 % min. min. min. ISO1083/JS/350-22-LT/Sa 350 220 22 ISO1083/JS/350-22-RT/Sb 350 220 22 ISO1083/JS/350-22/S 350 220 22 ISO1083/JS/400-18-LT/Sa 400 240 18 ISO1083/JS/400-18-RT/Sb 400 250 18 ISO1083/JS/400-18/S 4
42、00 250 18 ISO1083/JS/400-15/S 400 250 15 ISO1083/JS/450-10/S 450 310 10 ISO1083/JS/500-7/S 500 320 7 ISO1083/JS/550-5/S 550 350 5 ISO1083/JS/600-3/S 600 370 3 ISO1083/JS/700-2/S 700 420 2 ISO1083/JS/800-2/S 800 480 2 ISO1083/JS/900-2/S 900 600 2 NOTE 1 The values for these materials apply to casting
43、s cast in sand moulds of comparable thermal behaviour. Subject to amendments to be agreed upon in the order, they can apply to castings obtained by alternative methods. NOTE 2 Whatever the method used for obtaining the castings, the grades are based on the mechanical properties measured on test piec
44、es machined from samples separately cast in a sand mould or a mould of comparable thermal behaviour. NOTE 3 The mechanical properties of the materials refer to separately cast samples produced in accordance with Figures 1, 2 or 3. NOTE 4 Elongation values are determined from L0 = 5 d. For other gaug
45、e lengths, see 9.1 and Annex B. NOTE 5 1 N/mm2 = 1 MPa. a LT for low temperature ( 20 C or 40 C). b RT for room temperature (23 C). 3 3 ISO 1083:2004(E) 4 ISO 2004 All rights reserved 7.1.2 Impact test The particular impact resistance values given in Table 2 for room and low temperature applications
46、, if applicable, shall only be determined if specified by the purchaser by the time of acceptance of the order. Table 2 Minimum impact resistance values measured on V-notched test pieces machined from separately cast samples Minimum impact resistance values J room temperature low temperature low tem
47、perature (23 5) C ( 20 2) C ( 40 2) C Material designation Mean value from 3 tests Individual valueMean value from 3 tests Individual valueMean value from 3 tests Individual value ISO1083/JS/350-22-LT/Sa 12 9 ISO1083/JS/350-22-RT/Sb 17 14 ISO1083/JS/400-18-LT/Sa 12 9 ISO1083/JS/400-18-RT/Sb 14 11 NO
48、TE 1 The impact resistance values for these materials apply to castings cast in sand moulds of comparable thermal behaviour. Subject to amendments to be agreed upon in the order, they can apply to castings obtained by alternative methods. NOTE 2 Whatever the method used for obtaining the castings, t
49、he grades are based on the mechanical properties measured on test pieces machined from samples separately cast in a sand mould or a mould of comparable thermal behaviour. NOTE 3 These material grades may be suitable for some pressure vessel applications. (For fracture toughness, see Annex C.) a LT for low temperature. b RT for room temperature. 4 4 ISO 1083:2004(E) ISO 2004 All rights reserved 5 Type I, IIa, II