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1、 Reference number ISO/TR 15931:2004(E) ISO 2004 TECHNICAL REPORT ISO/TR 15931 First edition 2004-08-15 Designation system for cast irons and pig irons Systme de dsignation pour la fonte et la fonte brute Copyright International Organization for Standardization Provided by IHS under license with ISO
2、Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 07:51:02 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/TR 15931:2004(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be
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5、e is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. ISO 2004 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
6、or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47
7、 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2004 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 07:51:02 MDTNo reproduction or n
8、etworking permitted without license from IHS -,-,- ISO/TR 15931:2004(E) ISO 2004 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is norm
9、ally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in t
10、he work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare
11、 International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. In exceptional circumstances, when a technical
12、committee has collected data of a different kind from that which is normally published as an International Standard (“state of the art”, for example), it may decide by a simple majority vote of its participating members to publish a Technical Report. A Technical Report is entirely informative in nat
13、ure and does not have to be reviewed until the data it provides are considered to be no longer valid or useful. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such pate
14、nt rights. ISO/TR 15931 was prepared by Technical Committee ISO/TC 25, Cast iron and pig iron. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 07:51:02 MDTNo reproduction or netw
15、orking permitted without license from IHS -,-,- ISO/TR 15931:2004(E) iv ISO 2004 All rights reserved Introduction This Technical Report does not strictly meet the criteria for such a report, but was agreed upon by the Member Bodies of ISO/TC 25. This Technical Report will be subject to review in acc
16、ordance with ISO Directives. This Technical Report reflects the guidance given in ISO/TR 7003. It also takes into account the particular nomenclature requirements of cast irons and pig irons and diverges in certain aspects from the guidance given in ISO/TR 7003. For instance, it only concentrates on
17、 the primary distinguishing features required for the particular designation and relies on specific international materials standards to expand on the primary designation for contracts and other purposes. It takes account of the comments received from member bodies during the consulting stages of th
18、e project. The ISO/TC 25 Plenary Meeting has agreed by resolution that each Subcommittee and Working Group of ISO/TC 25 shall adopt the designation system detailed in this Technical Report for the designation of the specific cast iron(s) or pig iron(s) for which they are responsible. Copyright Inter
19、national Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 07:51:02 MDTNo reproduction or networking permitted without license from IHS -,-,- TECHNICAL REPORT ISO/TR 15931:2004(E) ISO 2004 All rights rese
20、rved 1 Designation system for cast irons and pig irons 1 Scope The aims of this Technical Report are: to make the designation of cast irons and pig irons as simple and as understandable as possible, bearing in mind language barriers world-wide; to define cast iron and pig iron designations by a simp
21、le code consisting of relevant letters and numbers only, taking into account the guidance given in Technical Report ISO/TR 7003; to ensure that the agreed system is user-friendly from the point of view of the casting designer, the manufacturer (founder) and the user; to ensure that the designation s
22、ystem clearly defines the materials described by standards and details all of the important attributes of mechanical properties, chemical composition and additional features that need to be described. 2 Normative references The following referenced documents are indispensable for the application of
23、this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 185, Grey (lamellar graphite) cast irons Classification ISO 1083, Spheroidal graphite cast irons Classification ISO 2892,
24、 Austenitic cast iron ISO 5922, Malleable cast iron ISO/TR 7003, Unified format for the designation of metals ISO 9147, Pig-irons Definition and classification ISO 16112, Compacted (vermicular) graphite cast irons Classification ISO 17804, Founding Ausferritic spheroidal graphite cast irons Classifi
25、cation ISO 21988, Abrasion resisting cast irons 3 Use of designation systems The designation system has four (4) positions (see Clause 4). Positions 1, 2 and 3 are obligatory. Position 4 is optional. Copyright International Organization for Standardization Provided by IHS under license with ISO Lice
26、nsee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 07:51:02 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/TR 15931:2004(E) 2 ISO 2004 All rights reserved The decision to specify the content of positions 3 and 4 is the responsibility of the relevant
27、subcommittee of ISO/TC 25. The symbols contained in one position shall be separated from the next position by a solidus (oblique stroke). The symbols to be used in position 2 of this designation system are detailed in Table 1. Table 1 Explanation of symbols in position 2 1st letter 2nd letter 3rd le
28、tter (optional) Base material Graphite structure Matrix structure J iron L lamellar (grey) A austenite M malleable B blackheart (malleable iron) N no graphite F ferrite S spheroidal (nodular) P pearlite V vermicular (compacted) L ledeburite Y pig iron M martensite Q quenched T tempered W whiteheart
29、(malleable iron) Chemical elements are defined by their accepted international symbols, e.g. chromium = Cr. Other symbols which are used in this designation system are defined in the body of the text, where relevant. When a cast iron material is defined on a manufacturing drawing, the designation is
30、 written in full without abbreviation, e.g. ISO185/JL/200/SH. When there is a requirement to denote a material specification on a cast component, it is permissible to use the relevant material grade designation in abbreviated form, e.g. JMB/350-10. 4 Designation system for cast irons and pig irons T
31、able 2 shows the positions within the designation system. Table 2 Positions within the designation Position 1 Position 2 Position 3 Position 4 Relevant ISO standard Code letter(s) for the materialCodes for primary propertiesAdditional requirements Position 1 shall contain the number of the relevant
32、ISO Standard only Position 2 shall contain the code letters for the material only Position 3 shall contain the code letters and/or numbers for the mechanical properties or alternatively for the chemical composition of the material Position 4 shall contain any other qualifying features unique to the
33、specific material or material grade (see Table 3) (see Table 4) (see Table 5) (see Table 6) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 07:51:02 MDTNo reproduction or network
34、ing permitted without license from IHS -,-,- ISO/TR 15931:2004(E) ISO 2004 All rights reserved 3 Table 3 Details of the possible contents of Position 1 Cast iron material ISO standard number Grey (lamellar graphite) cast iron ISO 185 Malleable cast iron ISO 5922 Spheroidal graphite cast iron ISO 108
35、3 Compacted (vermicular) graphite cast iron ISO 16112 Ausferritic spheroidal graphite cast iron ISO 17804 Austenitic cast iron ISO 2892 Abrasion resistant cast iron ISO 21988 Pig iron ISO 9147 Table 4 Details of the possible contents of Position 2 Cast iron material Code letter(s) for the material G
36、rey (lamellar graphite) cast iron JL Malleable cast iron JMB for blackheart JMW for whiteheart Spheroidal graphite cast iron JSa Compacted (vermicular) graphite cast iron JV Ausferritic spheroidal graphite cast iron JS Austenitic cast iron JLA or JSAb, c Abrasion resistant cast iron JNc Pig iron JY
37、a High silicon spheroidal graphite cast irons are designated by XSi plus silicon content (mass fraction), e.g.: JS/XSi4. The “XSi4” part of the designation is placed in position 3. b The graphite structure of the grades covered by this Technical Report can be either lamellar (JL) or spheroidal (JS).
38、 c The grades are further defined by X for higher contents of alloying elements. Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 07:51:02 MDTNo reproduction or networking permitt
39、ed without license from IHS -,-,- ISO/TR 15931:2004(E) 4 ISO 2004 All rights reserved Table 5 Details of values of the primary properties of the material of Position 3 Cast iron material Codes for primary properties Grey (lamellar graphite) cast iron Tensile strength in N/mm2 (3 digits) or alternati
40、vely Brinell hardness (HBW then 3 digits) Malleable cast iron Tensile strength in N/mm2 (3 digits) followed by a hyphen and then the elongation after fracture in % (1 or 2 digits) if applicable, indication of an impact resistance testa Spheroidal graphite cast iron Either tensile strength in N/mm2 (
41、3 digits) followed by a hyphen and then the elongation after fracture in % (1 or 2 digits) if applicable, indication of an impact resistance testa or alternatively Brinell hardness (HBW then 3 digits) Compacted (vermicular) graphite cast iron Tensile strength in N/mm2 (3 digits) Ausferritic spheroid
42、al graphite cast iron Either tensile strength in N/mm2 (3 or 4 digits) followed by a hyphen and then the elongation after fracture in % (1 or 2 digits) if applicable, indication of an impact resistance testb or alternatively Brinell hardness (HBW then 3 digits) Austenitic cast iron For each major ch
43、emical element, its symbol, followed by the mass fraction (average) of each element in % b Abrasion resistant cast iron For high chromium alloys:b, c Brinell hardness (HBW then 3 digits) chromium content (average): XCr then its mass fraction in % (2 digits) For all other material grades:b, c Brinell
44、 hardness (HBW then 3 digits) chromium content (average): Cr then its mass fraction in % (2 digits) Pig iron For each major chemical element, its symbol, followed by the mass fraction of each element in orderb NOTE 1 Each property is separated by a hyphen within any position. NOTE 2 1 N/mm2 = 1 MPa.
45、 a For certain grades, impact resistance can be specified as LT or RT: LT impact strength is determined at low temperature; RT impact strength is determined at room temperature. b Chemical composition shall be given as follows: major chemical element(s) followed by the mass fraction(s). X denotes th
46、at the mass fraction in % of all major elements except carbon is to be multiplied by the factor 1, followed by chemical symbol(s) of the element(s), followed by its (their) mass fraction(s) in % to nearest whole number (1 or 2 digits). c Hardness value can be specified for certain grades with hardne
47、ss value agreed upon by the time of the order and specified as follows: HBW Brinell hardness followed by the hardness value (3 digits); HV Vickers hardness followed by the hardness value (3 digits); HRC Rockwell hardness followed by the hardness value (3 digits). Copyright International Organization
48、 for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/22/2007 07:51:02 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/TR 15931:2004(E) ISO 2004 All rights reserved 5 Table 6 Details of the possible contents of Position 4 Cast iron material Additional requirements Grey (lamellar graphite) cast iron a, b Malleable cast iron a, b Spheroidal graphite cast