1、Designation: B783 10Standard 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 last r
2、evision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 This specification covers a variety of ferrous PM struc-tural materials and includes a classification system or materialdes
3、ignation code. The classification system used in this speci-fication includes chemical composition, minimum tensile;0.2 % offset yield strength for as-sintered materials and mini-mum ultimate tensile strength for heat-treated materials (sinterhardened or quenched and tempered). It also contains mini
4、-mum density and maximum coercive field strength require-ments for iron-phosphorus materials.1.2 Material classification is governed by the designationcode which is explained in Appendix X1. The data provideddisplay typical mechanical properties achieved under commer-cial manufacturing procedures. P
5、hysical and mechanical prop-erty performance characteristics can change as a result ofsubsequent processing steps beyond the steps designated in thisstandard.1.3 With the exception of density values for which theg/cm3unit is the industry standard, property values stated ininch-pound units are the st
6、andard. Values in SI units result fromconversion in accordance with IEEE/ASTM SI 10. They maybe approximate and are only for information.2. Referenced Documents2.1 ASTM Standards:2A839 Specification for Iron-Phosphorus Powder Metallurgy(P/M) Parts for Soft Magnetic ApplicationsB243 Terminology of Po
7、wder MetallurgyB528 Test Method for Transverse Rupture Strength ofPowder Metallurgy (PM) SpecimensB962 Test Methods for Density of Compacted or SinteredPowder Metallurgy (PM) Products Using ArchimedesPrincipleB963 Test Methods for Oil Content, Oil-Impregnation Ef-ficiency, and Interconnected Porosit
8、y of Sintered PowderMetallurgy (PM) Products Using Archimedes PrincipleE8 Test Methods for Tension Testing of Metallic MaterialsE29 Practice for Using Significant Digits in Test Data toDetermine Conformance with SpecificationsE1019 Test Methods for Determination of Carbon, Sulfur,Nitrogen, and Oxyge
9、n in Steel, Iron, Nickel, and CobaltAlloys by Various Combustion and Fusion TechniquesIEEE/ASTM SI 10 American National Standard for Use ofthe International System of Units (SI): The Modern MetricSystem2.2 MPIF Standard:3MPIF Standard 35 Materials Standards for PM StructuralPart3. Terminology3.1 Def
10、initionsDefinitions of powder metallurgy termscan be found in Terminology B243. Additional descriptiveinformation is available in the Related Materials section of Vol02.05 of the Annual Book of ASTM Standards.4. Ordering Information4.1 Materials for parts conforming to this specification shallbe ord
11、ered by material designation code.4.2 Orders for parts under this specification may include thefollowing information:4.2.1 Certification and test reports, if required (see Section11),4.2.2 Test methods and mechanical properties other thanstrength (see 8.2 and 8.3),4.2.3 Density (see 7.1),4.2.4 Poros
12、ity or oil content (see 7.2), and4.2.5 Special packaging if required.5. Materials and Manufacture5.1 Structural parts shall be made by compacting andsintering metal powders with or without subsequent heat-treating. Parts may also be made by repressing or repressingand resintering sintered parts, if
13、necessary, with or without1This specification is under the jurisdiction of ASTM Committee B09 on MetalPowders and Metal Powder Products and is the direct responsibility of Subcom-mittee B09.05 on Structural Parts.Current edition approved Jan. 1, 2010. Published December 2010. Originallyapproved in 1
14、988. Last previous edition approved in 2004 as B78304. DOI:10.1520/B0783-10.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onth
15、e ASTM website.3Available from MPIF, 105 College Road East, Princeton, NJ 08540.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.subsequent heat treatment to produce fi
16、nished parts conformingto the requirements of this specification.6. Chemical Composition6.1 The material shall conform to the requirements of Table1.6.2 Chemical analysis, if required, shall be performed bymethods agreed upon by the producer and the user.6.3 Various analytical test methods are used
17、to determinethe chemical composition (see ASTM standards for the appro-priate test methods) of PM materials. Combustion-infra-redabsorption and inert gas fusion methods (Test Methods E1019)are used for the specific elements carbon, nitrogen, oxygen,and sulfur.6.4 The Chemical Composition Requirement
18、s Table (Table1) designates the limits of metallurgically combined carbon foreach alloy. The combined carbon level can be estimatedmetallographically for sintered PM steels. When a clear pearl-ite to ferrite ratio cannot be estimated metallographically, totalcarbon can be determined using analytical
19、 methods (TestMethods E1019). This would include very low carbon levels(0.08 %), heat treated steels and materials made from preal-loyed base powders or diffusion alloyed powders. Whenreporting carbon levels, the report should identify whether thecarbon is metallurgically combined carbon or total ca
20、rbon andthe test method should be identified. While total carbon willapproximate the combined carbon in many materials, freegraphite and other carbonaceous material will raise the totalcarbon level above the level of combined carbon, possiblycausing the total carbon content to exceed the combined ca
21、rbonlevel specified for the material.7. Physical Properties7.1 Density:7.1.1 The user and producer may agree upon a minimumaverage density for the part or minimum densities for specificregions of the part, or both, except soft magnetic materials,which require a minimum average density as part of the
22、material specification.7.1.2 Density shall be determined in accordance with TestMethod B962.7.2 Porosity:7.2.1 The producer and the user may also agree upon aminimum volume oil content for parts that are to be self-lubricating.7.2.2 Porosity or oil content, or both, shall be determined inaccordance
23、with Test Method B963.7.2.3 The producer and the user may agree upon a func-tional test for porosity in parts that are to be self-lubricating, orfor permeability where fluid flow must be restricted.8. Mechanical Properties8.1 The guaranteed properties shown in Tables 2-12 areincluded in the suffix o
24、f the material designation code. Thecode is adopted from MPIF Standard 35. All tensile strengthsare read as 103psi, and are defined as the 0.2 % offset yieldstrength for as-sintered materials and the ultimate tensilestrength for heat-treated materials (sinter hardened or quenchedand tempered). Iron-
25、phosphorus materials (Table 3) contain analphanumeric suffix and are an exception to this rule. Theiron-phosphorus suffix is related to the minimum density andmaximum coercive field strength and not the tensile yieldstrength (see X1.3 and X1.4 for details).8.1.1 Materials that are heat treated (sint
26、er-hardened orquenched and tempered) have the numeric value followed byHT in the suffix.8.2 The producer and the user should agree upon the methodto be used to verify the minimum strength characteristics of thefinished parts. Since it is usually impossible to machine tensiletest specimens from these
27、 parts, alternative strength tests areadvisable.An example would be measuring the force needed tobreak teeth off a gear with the gear properly fixtured.8.3 If the tensile properties of the materials are required,standard test bars shall be compacted from the same mixedpowder lot, at the density of a
28、 critical region in the part, andprocessed along with the parts. When a PM part has a largerruling section than the test bar being used, the test bar may notbe representative of the part. The following procedures arelisted with the preferred method first.8.3.1 Transverse rupture strength (see Test M
29、ethod B528)can be related to the minimum tensile strength by the ratio oftypical transverse rupture strength to typical tensile strength atthe same density as the part, as shown in, or interpolated fromthe tables contained in Appendix X1.8.3.2 For as-sintered material, flat unmachined tension testsp
30、ecimens (see Test Methods E8) should be used for determi-nation of 0.2 % offset yield strength.8.3.3 For determining the tensile strength of heat-treated(sinter-hardened or quenched and tempered) material, roundtest bars should be machined from specially compacted,as-sintered bars because heat-treat
31、ed, unmachined specimensyield lower values. The machined tension test specimens (seeTest Methods E8) shall be heat-treated with the productionparts.9. Sampling9.1 Chemical AnalysisWhen requested on the purchaseorder, at least one sample for chemical analysis shall be takenfrom each lot. The analysis
32、 shall be performed by a mutuallyagreed upon method.9.2 Mechanical TestsThe producer and the user shallagree on the number of specimens for mechanical tests.10. Rejection and Rehearing10.1 Parts that fail to conform to the requirements of thisspecification may be rejected. Rejection should be report
33、ed tothe producer or supplier promptly and in writing.11. Certification and Test Reports11.1 When specified in the purchase order or contract, aproducers certification shall be furnished to the user that theparts were manufactured, sampled, tested, and inspected inaccordance with this specification
34、and have been found to meetthe requirements. When specified in the purchase order orcontract, a report of the test results shall be furnished.B783 102TABLE 1 Chemical Composition RequirementsANOTEFor the Stainless Steels: N1Nitrogen alloyed. Good strength, low elongation. N2Nitrogen alloyed. High st
35、rength, medium elongation. LLow carbon. Lower strength, highestelongation. HTMartensitic grade, heat treated. Highest strength.Chemical Composition, Mass %MaterialDesignationIron Copper Carbon NickelMolyb-denumChro-miumMan-ganeseSilicon SulfurPhos-phorusNitro-genColum-biumOxygen OtherF-0000 Min Bal.
36、 . 0.0 . . . . . . . . . . .F-0000 Max Bal. . 0.3 . . . . . . . . . . 2.0F-0005 Min Bal. . 0.3 . . . . . . . . . . .F-0005 Max Bal. . 0.6 . . . . . . . . . . 2.0F-0008 Min Bal. . 0.6 . . . . . . . . . . .F-0008 Max Bal. . 0.9 . . . . . . . . . . 2.0FY-4500 Min Bal. . 0.00 . . . . . . 0.40 0.00 . 0.0
37、0 .FY-4500 Max Bal. . 0.03 . . . . . . 0.50 0.01 . 0.10 0.5FY-8000 Min Bal. . 0.00 . . . . . . 0.75 0.00 . 0.00 FY-8000 Max Bal. . 0.03 . . . . . . 0.85 0.01 . 0.10 0.5FX-1000 Min Bal. 8.0 0.0 . . . . . . . . . . .FX-1000 Max Bal. 14.9 0.3B. . . . . . . . . . 2.0FX-1005 Min Bal. 8.0 0.3B. . . . . .
38、. . . . .FX-1005 Max Bal. 14.9 0.6B. . . . . . . . . . 2.0FX-1008 Min Bal. 8.0 0.6B. . . . . . . . . . .FX-1008 Max Bal. 14.9B. . . . . . . . . . 2.0FX-2000 Min Bal. 15.0 0.0 . . . . . . . . . . .FX-2000 Max Bal. 25.0 0.3B. . . . . . . . . . 2.0FX-2005 Min Bal. 15.0 0.3B. . . . . . . . . . .FX-2005
39、Max Bal. 25.0 0.6B. . . . . . . . . . 2.0FX-2008 Min Bal. 15.0 0.6B. . . . . . . . . . .FX-2008 Max Bal. 25.0 0.9B. . . . . . . . . . 2.0FC-0200 Min Bal. 1.5 0.0 . . . . . . . . . . .FC-0200 Max Bal. 3.9 0.3 . . . . . . . . . . 2.0FC-0205 Min Bal. 1.5 0.3 . . . . . . . . . . .FC-0205 Max Bal. 3.9 0.
40、6 . . . . . . . . . . 2.0FC-0208 Min Bal. 1.5 0.6 . . . . . . . . . . .FC-0208 Max Bal. 3.9 0.9 . . . . . . . . . . 2.0FC-0505 Min Bal. 4.0 0.3 . . . . . . . . . . .FC-0505 Max Bal. 6.0 0.6 . . . . . . . . . . 2.0FC-0508 Min Bal. 4.0 0.6 . . . . . . . . . . .FC-0508 Max Bal. 6.0 0.9 . . . . . . . .
41、. . 2.0FC-0808 Min Bal. 7.0 0.6 . . . . . . . . . . .FC-0808 Max Bal. 9.0 0.9 . . . . . . . . . . 2.0B783103TABLE 1 ContinuedChemical Composition, Mass %MaterialDesignationIron Copper Carbon NickelMolyb-denumChro-miumMan-ganeseSilicon SulfurPhos-phorusNitro-genColum-biumOxygen OtherFC-1000 Min Bal.
42、9.0 0.0 . . . . . . . . . . .FC-1000 Max Bal. 11.0 0.3 . . . . . . . . . . 2.0FN-0200 Min Bal. 0.0 0.0 1.0 . . . . . . . . . .FN-0200 Max Bal. 2.5 0.3 3.0 . . . . . . . . . 2.0FN-0205 Min Bal. 0.0 0.3 1.0 . . . . . . . . . .FN-0205 Max Bal. 2.5 0.6 3.0 . . . . . . . . . 2.0FN-0208 Min Bal. 0.0 0.6 1
43、.0 . . . . . . . . . .FN-0208 Max Bal. 2.5 0.9 3.0 . . . . . . . . . 2.0FN-0405 Min Bal. 0.0 0.3 3.0 . . . . . . . . . .FN-0405 Max Bal. 2.0 0.6 5.5 . . . . . . . . . 2.0FN-0408 Min Bal. 0.0 0.6 3.0 . . . . . . . . . .FN-0408 Max Bal. 2.0 0.9 5.5 . . . . . . . . . 2.0FL-4005 Min Bal. . 0.4 . 0.40 .
44、0.05 . . . . . . .FL-4005 Max Bal. . 0.7 . 0.60 . 0.30 . . . . . . 2.0FL-4205 Min Bal. . 0.4 0.35 0.50 . 0.20 . . . . . . .FL-4205 Max Bal. . 0.7 0.55 0.85 . 0.40 . . . . . . 2.0FL-4400 Min Bal. . 0.0 . 0.75 . 0.05 . . . . . . .FL-4400 Max Bal. . 0.3 . 0.95 . 0.30 . . . . . . 2.0FL-4405 Min Bal. . 0
45、.4 . 0.75 . 0.05 . . . . . . .FL-4405 Max Bal. . 0.7 . 0.95 . 0.30 . . . . . . 2.0FL-4605 Min Bal. . 0.4 1.70 0.45 . 0.05 . . . . . . .FL-4605 Max Bal. . 0.7 2.00 0.60 . 0.30 . . . . . . 2.0FL-4805 Min Bal. . 0.4 1.20 1.10 . 0.30 . . . . . . .FL-4805 Max Bal. 0.7 1.60 1.40 . 0.50 . . . . . . 2.0FL-4
46、8105 Min Bal. . 0.4 1.65 0.85 . 0.30 . . . . . . .FL-48105 Max Bal. . 0.7 2.05 1.15 . 0.55 . . . . . . 2.0FL-4905 Min Bal. . 0.4 . 1.30 . 0.05 . . . . . . .FL-4905 Max Bal. . 0.7 . 1.70 . 0.30 . . . . . . 2.0FL-5208 Min Bal. . 0.6 . 0.15 1.3 0.05 . . . . . . .FL-5208 Max Bal. . 0.8 . 0.30 1.7 0.30 .
47、 . . . . . 2.0FL-5305 Min Bal. . 0.4 . 0.40 2.7 0.05 . . . . . . .FL-5305 Max Bal. . 0.6 . 0.60 3.3 0.30 . . . . . . 2.0FLN2C-4005Min Bal. 1.3 0.4 1.55 0.40 . 0.05 . . . . . . .FLN2C-4005Max Bal. 1.7 0.7 1.95 0.60 . 0.30 . . . . . . 2.0B783104TABLE 1 ContinuedChemical Composition, Mass %MaterialDesi
48、gnationIron Copper Carbon NickelMolyb-denumChro-miumMan-ganeseSilicon SulfurPhos-phorusNitro-genColum-biumOxygen OtherFLN4C-4005Min Bal. 1.3 0.4 3.60 0.40 . 0.05 . . . . . . .FLN4C-4005Max Bal. 1.7 0.7 4.40 0.60 . 0.30 . . . . . . 2.0FLN-4205(formerlyLow-AlloySteel)Min Bal. . 0.4 1.35C0.49 . 0.20 .
49、. . . . . .FLN-4205 Max Bal. . 0.7 2.50C0.85 . 0.40 . . . . . . 2.0FLN2-4400 Min Bal. . 0.0 1.00 0.65 . 0.05 . . . . . . .FLN24400 Max Bal. . 0.3 3.00 0.95 . 0.30 . . . . . . 2.0FLN2-4405(formerlyLow-AlloySteel)Min Bal. . 0.4 1.00 0.65 . 0.05 . . . . . . .FLN2-4405 Max Bal. . 0.7 3.00 0.95 . 0.30 . . . . . . 2.0FLN44400 Min Bal. . 0.0 3.00 0.65 . 0.05 . . . . . . .FLN44400 Max Bal. . 0.3 5.00 0.95 . 0.30 . . . . . . 2.0FLN44405(formerlyLow-AlloySteel)Min Bal. . 0.4 3.00 0.65 . 0.05 . . . . . . .FLN44405 Max Bal. . 0.7 5.00 0.95 . 0.30 . . . . . . 2.0FLN6-4405(forme
