ASTM B439-06

Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil Impregnated)

SCOPE
1.1 This specification covers porous metallic sleeve, flange, thrust, and spherical iron-base bearings that are produced from mixed metal powder utilizing powder metallurgy (PM) technology and then impregnated with oil to supply operating lubrication.
1.2 Included are the specifications for the chemical, physical, and mechanical requirements of those ferrous PM materials that have been developed and standardized specifically for use in the manufacture of these self-lubricating bearings.
1.3 This specification is a companion standard to Specification B 438/B 438M that covers the requirements for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated).
1.4 Typical applications for iron-base bearings are discussed in .
1.5 Commercial bearing dimensional tolerance data are shown in , while engineering information regarding installation and operating parameters of PM bearings is included in . Additional useful information on self-lubricating bearings can be found in MPIF Standard 35 (Bearings) and the technical literature.
1.6 With the exception of density values for which the g/cm3 unit is the industry standard, the values stated in inch-pound units are to be regarded as standard. The SI equivalents of inch-pound units, shown in parenthesis, have been converted in accordance with IEEE/ASTM Standard SI 10, may be approximate and are only for information.
1.7 The following safety hazards caveat pertains only to the test methods described in this specification. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 30-Sep-2006
• ICS: 21.100.10 - Plain bearings
• Technical Committee: B09 - Metal Powders and Metal Powder Products
• Drafting Committee: B09.04 - Bearings

Relations

• Replaces: ASTM B439-00e1 - Standard Specification for Iron-Base Sintered Bearings (Oil-Impregnated)
• Effective Date: 01-Oct-2006
• Replaced By: ASTM B439-07 - Standard Specification for Iron-Base Powder Metallurgy (PM) Bearings (Oil Impregnated)
• Effective Date: 01-Jun-2007
• Referred By: ASTM B939-21 - Standard Test Method for Radial Crushing Strength, <emph type="bdit">K</emph>, of Powder Metallurgy (PM) Bearings and Structural Materials
• Effective Date: 01-Oct-2006
• Referred By: ASTM B925-15(2022) - Standard Practices for Production and Preparation of Powder Metallurgy (PM) Test Specimens
• Effective Date: 01-Oct-2006
• Referred By: ASTM B438-21 - Standard Specification for Bronze-Base Powder Metallurgy (PM) Bearings (Oil-Impregnated)
• Effective Date: 01-Oct-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B 439 – 06
Standard Specification for
Iron-Base Powder Metallurgy (PM) Bearings (Oil
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Impregnated)
This standard is issued under the fixed designation B 439; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
1. Scope* 2. Referenced Documents
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1.1 This specification covers porous metallic sleeve, flange, 2.1 ASTM Standards:
thrust, and spherical iron-base bearings that are produced from B 243 Terminology of Powder Metallurgy
mixed metal powder utilizing powder metallurgy (PM) tech- B 328 Test Method for Density, Oil Content, and Intercon-
nology and then impregnated with oil to supply operating nected Porosity of Sintered Metal Structural Parts and
lubrication. Oil-Impregnated Bearings
1.2 Included are the specifications for the chemical, physi- B 438/B 438M SpecificationforBronzePowderMetallurgy
cal, and mechanical requirements of those ferrous PM materi- (P/M) Bearings (Oil-Impregnated)
als that have been developed and standardized specifically for B 939 Test Method for Radial Crushing Strength, K,of
use in the manufacture of these self-lubricating bearings. Powder Metallurgy (P/M) Bearings and Structural Materi-
1.3 This specification is a companion standard to Specifica- als
tion B 438/B 438M that covers the requirements for Bronze- E29 Practice for Using Significant Digits in Test Data to
Base Powder Metallurgy (PM) Bearings (Oil-Impregnated). Determine Conformance with Specifications
1.4 Typicalapplicationsforiron-basebearingsarediscussed E 1019 Test Methods for Determination of Carbon, Sulfur,
in Appendix X1. Nitrogen, and Oxygen in Steel and in Iron, Nickel, and
1.5 Commercial bearing dimensional tolerance data are Cobalt Alloys
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shown inAppendix X2, while engineering information regard- 2.2 MPIF Standard:
ing installation and operating parameters of PM bearings is MPIF Standard 35 Materials Standards for PM Self-
included in Appendix X3. Additional useful information on Lubricating Bearings
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self-lubricating bearings can be found in MPIF Standard 35 2.3 IEEE/ASTM Standard:
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(Bearings) and the technical literature. SI 10 American National Standard for Use of the Interna-
1.6 With the exception of density values for which the tional System of Units (SI): The Modernized Metric
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g/cm unit is the industry standard, the values stated in System
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inch-pound units are to be regarded as standard. The SI 2.4 ISO Standard:
equivalents of inch-pound units, shown in parenthesis, have ISO 2795 Plain Bearings from Sintered Metal—Dimension
been converted in accordance with IEEE/ASTM Standard and Tolerances
SI 10, may be approximate and are only for information.
3. Terminology
1.7 The following safety hazards caveat pertains only to the
test methods described in this specification. This standard does 3.1 Definitions—The definitions of the terms used in this
specification are found in Terminology B 243. Additional
not purport to address all of the safety concerns, if any,
associated with its use. It is the responsibility of the user of this descriptive information is available in the Related Materials
section of Volume 02.05 of the Annual Book of ASTM
standard to establish appropriate safety and health practices
and determine the applicability of regulatory limitations prior Standards.
to use.
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For referenced ASTM standards, visit the ASTM website, www.astm.org, or
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This specification is under the jurisdiction ofASTM Committee B09 on Metal contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Powders and Metal Powder Products and is the direct responsibility of Subcom- Standards volume information, refer to the standard’s Document Summary page on
mittee B09.04 on Bearings. the ASTM website.
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Current edition approved Oct. 1, 2006. Published December 2006. Replaces Available from Metal Powder Industries Federations, 105 College Road East,
portions of B 612 and B 782. Originally approved in 1966 to replace portions of Princeton, NJ 08540, http://[e-mail].
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B 202. Last previous edition approved in 2000 as B 439 – 00 . Available from International Organization for Standardization (ISO), 1 rue de
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Machine Design Magazine, Vol 54, No. 14, June 17, 1982, pp. 130–142. Varembé, Case postale 56, CH-1211, Geneva 20, Switzerland, http://www.iso.ch.
*A Summary of Changes section appears at the end of this standard.
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