1、June 2014Translation by DIN-Sprachendienst.English price group 11No 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 77
2、.160!%2m?“2157428www.din.deDDIN EN ISO 22068Sintered-metal injection-moulded materials Specifications (ISO 22068:2012);English version EN ISO 22068:2014,English translation of DIN EN ISO 22068:2014-06Sintermetallpulverspritzguss Anforderungen (ISO 22068:2012);Englische Fassung EN ISO 22068:2014,Engl
3、ische bersetzung von DIN EN ISO 22068:2014-06Matriaux mtalliques fritts pour moulage par injection Spcifications (ISO 22068:2012);Version anglaise EN ISO 22068:2014,Traduction anglaise de DIN EN ISO 22068:2014-06www.beuth.deIn case of doubt, the German-language original shall be considered authorita
4、tive.Document comprises 16 pages06.14 DIN EN ISO 22068:2014-06 2 A comma is used as the decimal marker. National foreword The text of this document (ISO 22068:2012) has been prepared by Technical Committee ISO/TC 119 “Powder metallurgy” of the International Organization for Standardization (ISO) and
5、 has been adopted as European Standard EN ISO 22068:2014. The responsible German body involved in its preparation was the Normenausschuss Werkstofftechnologie (Technology of Materials Standards Committee), Working Committee NA 145-01-05 AA Anforderungen an pulvermetallurgische Werkstoffe (ausgenomme
6、n Hartmetalle). The DIN Standards corresponding to the International Standards referred to in this document are as follows: ISO 2740 DIN EN ISO 2740 ISO 3369 DIN EN ISO 3369 ISO 4498 DIN EN ISO 4498 ISO 5755 DIN EN ISO 5755 ISO 6507-1 DIN EN ISO 6507-1 ISO 6508-1 DIN EN ISO 6508-1 ISO 6892-1 DIN EN
7、ISO 6892-1 ISO 9227 DIN EN ISO 9227 National Annex NA (informative) Bibliography DIN EN ISO 2740, Sintered metal materials, excluding hardmetals Tensile test pieces DIN EN ISO 3369, Impermeable sintered metal materials and hardmetals Determination of density DIN EN ISO 4498, Sintered metal materials
8、, excluding hardmetals Determination of apparent hardness and microhardness DIN EN ISO 5755, Sintered metal materials Specifications DIN EN ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method DIN EN ISO 6508-1, Metallic materials Rockwell hardness test Part 1: Test method DIN EN
9、 ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature DIN EN ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests EN ISO22068March 2014 ICS 77.160 English Version Sintered-metal injection-moulded materials - Specifications(ISO 22068:2012) Matriaux
10、 mtalliques fritts pour moulage par injection - Spcifications (ISO 22068:2012) Sintermetallpulverspritzguss - Anforderungen(ISO 22068:2012)This European Standard was approved by CEN on 2 March 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditi
11、ons 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 member. This European Standard exists i
12、n 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. CEN members are the national standar
13、ds bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slove
14、nia, Spain, Sweden, Switzerland, Turkey andUnited Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 22068:2014 EEUROPEAN COMMITTEE FOR STANDARDIZATION
15、COMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMContents Page Foreword . 3 1 Scope . 4 2 Normative references. 4 3 Terms and definitions 5 4 Test methods for normative properties . 5 4.1 General 5 4.2 Chemical composition . 5 4.3 Density 5 4
16、.4 Tensile strength 5 4.5 Tensile yield strength 6 4.6 Elongation . 6 4.7 Magnetic properties . 6 5 Other test methods 6 5.1 Hardness . 6 5.2 Corrosion resistance . 6 5.2.1 Sulfuric acid test 6 5.2.2 Copper sulfate test . 6 5.2.3 Boiling water test . 6 5.2.4 Salt spray test . 6 6 Information and exp
17、lanatory notes 7 6.1 Minimum value concept 7 6.2 Minimum mechanical property values . 7 6.3 Proof testing . 7 6.4 Chemical composition . 7 6.5 Density and residual porosity . 7 6.6 Heat treatment 7 7 Designation of materials . 8 7.1 Designation system . 8 7.2 Description block . 8 7.3 Identity block
18、 8 7.4 Individual item block 8 8 Material specifications . 9 Bibliography 14 2DIN EN ISO 22068:2014-06EN ISO 22068:2014 (E) ForewordThe text of ISO 22068:2012 has been prepared by Technical Committee ISO/TC 119 “Powder metallurgy” of the International Organization for Standardization (ISO) and has b
19、een taken over as EN ISO 22068:2014. 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 2014, and conflicting national standards shall be withdrawn at the latest by September 2014. Attentio
20、n 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. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
21、 following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherla
22、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 22068:2012 has been approved by CEN as EN ISO 22068:2014 without any modification. 3DIN EN ISO 22068:2014-06EN ISO 22068:2014 (E)1 Scope This Inte
23、rnational Standard specifies the requirements for the chemical composition and the mechanical and physical properties of sintered-metal injection-moulded materials. It is intended to provide design and materials engineers with necessary information for specifying materials in components manufactured
24、 by means of the Metal Injection Moulding (MIM) process only. It does not apply to structural parts manufactured by other powder metallurgy routes, such as press-and-sinter or powder-forging technologies. 2 Normative references The following referenced documents are indispensable for the application
25、 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. ISO 2740, Sintered materials, excluding hardmetals Tensile test pieces ISO 3369, Impermeable sintered metal materials and
26、 hardmetals Determination of density ISO 4498, Sintered metal materials, excluding hardmetals Determination of apparent hardness and micro-hardness ISO 6507-1, Metallic materials Vickers hardness test Part 1: Test method ISO 6508-1, Metallic materials Rockwell hardness test Part 1: Test method (scal
27、es, A, B, C, E, F, G, H, K, N, T) ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature ISO 9227, Corrosion tests in artificial atmospheres Salt spray tests IEC 60404-4, Magnetic materials Part 4: Methods of measurement of d.c. magnetic properties of magnetically
28、soft materials ASTM D2638, Standard Test Method for Real Density of Calcined Petroleum Coke by Helium Pycnometer ASTM D4892, Standard Test Method for Density of Solid Pitch (Helium Pycnometer Method) 4DIN EN ISO 22068:2014-06EN ISO 22068:2014 (E) 3 Terms and definitions For the purposes of this docu
29、ment, the following terms and definitions apply. 3.1 tensile strength Rmability of a test specimen to resist fracture when a pulling force is applied in a direction parallel to its longitudinal axis, expressed in MPa 3.2 tensile yield strength Rp0,2load at which the material exhibits a 0,2 % offset
30、from proportionality on a stress-strain curve in tension, divided by the original cross-sectional area, expressed in MPa 3.3 elongation A25plastic elongation, expressed as a percentage of the original gauge length of the specimen NOTE The elastic strain at the 0,2 % yield strength must be subtracted
31、 from the total elongation to give the plastic elongation. 3.4 density mass per unit volume of the material, expressed in g/cm33.5 hardness resistance of a PM material to indentation, tested under specified conditions 4 Test methods for normative properties 4.1 General The following test methods sha
32、ll be used to determine the normative properties given in Tables 1 to 6. 4.2 Chemical composition Whenever possible, and always in cases of dispute, the methods of chemical analysis shall be those specified in the relevant International Standards. If no International Standard is available, the metho
33、d may be agreed upon and specified at the time of enquiry and order. 4.3 Density The density shall be determined in accordance with ISO 3369 or by gas pycnometer measurement in accordance with ASTM D2638 or ASTM D4892 as stipulated at the time of enquiry and order. 4.4 Tensile strength The ultimate
34、tensile strength shall be determined in accordance with ISO 2740 and ISO 6892-1. 5DIN EN ISO 22068:2014-06EN ISO 22068:2014 (E)N1) National footnote: A25in this document means A25mmin accordance with DIN EN ISO 6892-1.N1)4.5 Tensile yield strength The tensile yield strength shall be determined in ac
35、cordance with ISO 2740 and ISO 6892-1. 4.6 Elongation The elongation shall be determined in accordance with ISO 2740 and ISO 6892-1. 4.7 Magnetic properties The maximum permeability and magnetic induction at an applied field of 1 990 A/m (25 Oe) shall be determined in accordance with IEC 60404-4. 5
36、Other test methods 5.1 Hardness The hardness shall be determined in accordance with ISO 4498, ISO 6507-1 and ISO 6508-1. 5.2 Corrosion resistance Four corrosive media and test methods (see 5.2.1 to 5.2.4) are used to rate the corrosion resistance of MIM stainless-steel alloys. 5.2.1 Sulfuric acid te
37、st The standard un-notched Charpy test specimens (10 mm 5 mm 55 mm) are immersed in a 2 % by mass sulfuric acid solution at room temperature for 1 000 h. Three replicates are tested. The loss in mass for each is determined in accordance with MPIF Standard 62, and then converted into mass loss per su
38、rface area per day in units of gram per square decimetre day g/(dm2)(day). 5.2.2 Copper sulfate test The test specimens or test parts are immersed in a copper sulfate solution (dissolve 1 g of cupric sulfate crystals in a mixture of 22,5 ml of distilled water and 2,5 g of sulfuric acid) for 6 min (
39、30 s) at a temperature of 17 to 20 C. Specimens that show no sign of copper plating are classified as passing this test (see ASTM F1089). 5.2.3 Boiling water test The test specimen or test parts are immersed in distilled water, then brought to a boil and held for (30 1) min. After the 30 min exposur
40、e remove from the heat source and let the specimens remain in the water for 3 h 15 min. The specimens are then removed and left to dry in still air for 2 h 10 min. Specimens that show no visible corrosion are classified as passing this test (see ASTM F1089). 5.2.4 Salt spray test Criteria for the sa
41、lt spray test in accordance with ISO 9227 shall be determined between the manufacturer and the customer. 6DIN EN ISO 22068:2014-06EN ISO 22068:2014 (E) 6 Information and explanatory notes 6.1 Minimum value concept This International Standard has adopted the concept of minimum mechanical and magnetic
42、 property values. These values may be used for determining the material most suited for a particular application if the part is manufactured by means of the MIM process. 6.2 Minimum mechanical property values The minimum values for the MIM materials are expressed in terms of ultimate tensile strengt
43、h, yield strength (0,2 % offset), and percent elongation to fracture. Values are reported for structural materials in both the as-sintered and heat-treated condition (where applicable). The tensile properties used for establishing this International Standard were obtained from tensile specimens prep
44、ared according to ISO 2740. Tensile properties obtained from test specimens prepared by machining of non-standard specimens, or from non-standard specimens directly, may differ from those prepared according to ISO 2740. Evidence of mechanical properties for a particular component shall therefore be
45、based on the tensile properties measured using specimens prepared according to ISO 2740. These specimens shall be manufactured from the same batch of material as the components, have the same density and be sintered and heat treated (if required) along with the components. Defects introduced during
46、the MIM processing of particular components may limit the tensile properties. Non-destructive evaluation of the parts can be necessary to ensure that the minimum property specifications according to this International Standard are met, if proof testing is not used. 6.3 Proof testing The practical me
47、thod for demonstrating the strength of a component is through static or dynamic testing stipulated by the supplier and/or user of the MIM part. This proof test should be as closely related to the actual function of the part as possible, as provided by break load, bend test, pull test, etc. For examp
48、le, it may be agreed that the break load should be greater than a given value. If that load is exceeded in proof tests, the minimum strength is demonstrated. In an alternative method, the first batch of parts can also be tested in service and demonstrated to be acceptable. The static or dynamic load
49、 to fracture is determined separately and these data are statistically analysed to determine a minimum break load for future production batches. Exceeding that minimum load on future lots of these parts is proof that the specified strength requirement has been met. 6.4 Chemical composition The chemical composition of each material lists the principal alloying elements by minimum and maximum percentage. Other elements include the total
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