ASTM B783-2013 Standard Specification for Materials for Ferrous Powder Metallurgy (PM) Structural Parts《黑色粉末冶金(PM)结构部件用材料的标准规格》.pdf
《ASTM B783-2013 Standard Specification for Materials for Ferrous Powder Metallurgy (PM) Structural Parts《黑色粉末冶金(PM)结构部件用材料的标准规格》.pdf》由会员分享,可在线阅读,更多相关《ASTM B783-2013 Standard Specification for Materials for Ferrous Powder Metallurgy (PM) Structural Parts《黑色粉末冶金(PM)结构部件用材料的标准规格》.pdf(61页珍藏版)》请在麦多课文档分享上搜索。
1、Designation: B783 10B783 13Standard Specification forMaterials for Ferrous Powder Metallurgy (PM) StructuralParts1This standard is issued under the fixed designation B783; the number immediately following the designation indicates the year oforiginal adoption or, in the case of revision, the year of
2、 last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*Scope1.1 This specification covers a variety of ferrous PM structural materials and includes a classification system or
3、materialdesignation code.The classification system used in this specification includes chemical composition, minimum tensile; 0.2 % offsetyield strength for as-sintered materials and minimum ultimate tensile strength for heat-treated materials (sinter hardened orquenched and tempered). It also conta
4、ins minimum density and maximum coercive field strength requirements for iron-phosphorusmaterials.1.2 Material classification is governed by the designation code which is explained in Appendix X1. The data provided displaytypical mechanical properties achieved under commercial manufacturing procedur
5、es. Physical and mechanical propertyperformance characteristics can change as a result of subsequent processing steps beyond the steps designated in this standard.1.3 With the exception of density values for which the g/cm3 unit is the industry standard, property values stated in inch-poundunits are
6、 the standard. Values in SI units result from conversion in accordance with conversion. IEEE/ASTM SI 10. They may beapproximate and are only for information.2. Referenced Documents2.1 ASTM Standards:2A839 Specification for Iron-Phosphorus Powder Metallurgy (P/M) Parts for Soft Magnetic ApplicationsB
7、243 Terminology of Powder MetallurgyB528 Test Method for Transverse Rupture Strength of Powder Metallurgy (PM) SpecimensB962 Test Methods for Density of Compacted or Sintered Powder Metallurgy (PM) Products Using Archimedes PrincipleB963 Test Methods for Oil Content, Oil-Impregnation Efficiency, and
8、 Interconnected Porosity of Sintered Powder Metallurgy(PM) Products Using Archimedes PrincipleE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data to Determine Conformance with SpecificationsE1019 Test Methods for Determination of Carbon, Su
9、lfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys byVarious Combustion and Fusion TechniquesIEEE/ASTM SI 10 American National Standard for Use of the International System of Units (SI): The Modern Metric System2.2 MPIF Standard:3MPIF Standard 35 Materials Standards for PM Structur
10、al PartParts3. Terminology3.1 DefinitionsDefinitions of powder metallurgy terms can be found in Terminology B243.Additional descriptive informationis available in the Related Materials section of Vol 02.05 of the Annual Book of ASTM Standards.4. Ordering Information4.1 Materials for parts conforming
11、 to this specification shall be ordered by material designation code.4.2 Orders for parts under this specification may include the following information:1 This specification is under the jurisdiction of ASTM Committee B09 on Metal Powders and Metal Powder Products and is the direct responsibility of
12、 SubcommitteeB09.05 on Structural Parts.Current edition approved Jan. 1, 2010Nov. 1, 2013. Published December 2010November 2013. Originally approved in 1988. Last previous edition approved in 20042010as B78304. 10. DOI: 10.1520/B0783-10.10.1520/B0783-13.2 For referencedASTM standards, visit theASTM
13、website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.3 Available from MPIF, 105 College Road East, Princeton, NJ 08540.This document is not an ASTM standard and
14、 is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only t
15、he current versionof the standard as published by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States14.2.1 Certification and
16、test reports, if required (see Section 11),4.2.2 Test methods and mechanical properties other than strength (see 8.2 and 8.3),4.2.3 Density (see 7.1),4.2.4 Porosity or oil content (see 7.2), and4.2.5 Special packaging if required.5. Materials and Manufacture5.1 Structural parts shall be made by comp
17、acting and sintering metal powders with or without subsequent heat -treating. Partsmay also be made by repressing or repressing and resintering sintered parts, if necessary, with or without subsequent heat treatmentto produce finished parts conforming to the requirements of this specification.6. Che
18、mical Composition6.1 The material shall conform to the requirements of Table 1.6.2 Chemical analysis, if required, shall be performed by methods agreed upon by the producer and the user.6.3 Various analytical test methods are used to determine the chemical composition (see ASTM standards for the app
19、ropriatetest methods) of PM materials. Combustion-infra-red absorption and inert gas fusion methods (Test Methods E1019) are used forthe specific elements carbon, nitrogen, oxygen, and sulfur.6.4 The Chemical Composition Requirements Table (Table 1) designates the limits of metallurgically combined
20、carbon for eachalloy. The combined carbon level can be estimated metallographically for sintered PM steels. When a clear pearlite to ferrite ratiocannot be estimated metallographically, total carbon can be determined using analytical methods (Test Methods E1019). Thiswould include very low carbon le
21、vels (0.08 %), heat treated steels and materials made from prealloyed base powders or diffusionalloyed powders. When reporting carbon levels, the report should identify whether the carbon is metallurgically combined carbonor total carbon and the test method should be identified. While total carbon w
22、ill approximate the combined carbon in manymaterials, free graphite and other carbonaceous material will raise the total carbon level above the level of combined carbon,possibly causing the total carbon content to exceed the combined carbon level specified for the material.7. Physical Properties7.1
23、Density:7.1.1 The user and producer may agree upon a minimum average density for the part or minimum densities for specific regionsof the part, or both, except soft magnetic materials, which require a minimum average density as part of the material specification.7.1.2 Density shall be determined in
24、accordance with Test Method B962.7.2 Porosity:7.2.1 The producer and the user may also agree upon a minimum volume oil content for parts that are to be self-lubricating.7.2.2 Porosity or oil content, or both, shall be determined in accordance with Test Method B963.7.2.3 The producer and the user may
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