ASTM F2094/F2094M-18
(Specification)Standard Specification for Silicon Nitride Bearing Balls
Standard Specification for Silicon Nitride Bearing Balls
ABSTRACT
This specification covers the establishment of the basic quality, physical/mechanical property, and test requirements for silicon nitride balls Classes I, II, and III to be used for ball bearings and specialty ball applications. Silicon nitride balls should be produced from either silicon nitride powder having the compositional limits from silicon metal powder.
SCOPE
1.1 This specification covers the establishment of the basic quality, physical/mechanical property, and test requirements for silicon nitride balls Classes I, II, and III to be used for ball bearings and specialty ball applications.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
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Designation:F2094/F2094M −18
Standard Specification for
1
Silicon Nitride Bearing Balls
ThisstandardisissuedunderthefixeddesignationF2094/F2094M;thenumberimmediatelyfollowingthedesignationindicatestheyear
of original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.
A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2.3 ANSI Standard:
ANSI/ASQC Z1.4Sampling Procedures and Tables for In-
1.1 This specification covers the establishment of the basic
3
spection by Attributes
quality, physical/mechanical property, and test requirements
2.4 ABMA Standards:
for silicon nitride balls Classes I, II, and III to be used for ball 4
STD 10Metal Balls
bearings and specialty ball applications.
2.5 ASME Standard:
B 46.1Surface Texture (Surface Roughness, Waviness, and
1.2 The values stated in either SI units or inch-pound units
5
Lay)
are to be regarded separately as standard. The values stated in
6
2.6 ISO Standards:
each system may not be exact equivalents; therefore, each
4505Hardmetals—Metallographic Determination of Poros-
system shall be used independently of the other. Combining
ity and Uncombined Carbon
values from the two systems may result in non-conformance
2.7 JIS Standards:
with the standard.
R 1601Testing Method for Flexural Strength (Modulus of
7
1.3 This international standard was developed in accor-
Rupture) of High Performance Ceramics
dance with internationally recognized principles on standard-
R 1607Testing Method for Fracture Toughness of High
7
ization established in the Decision on Principles for the
Performance Ceramics
Development of International Standards, Guides and Recom-
2.8 CEN Standards:
mendations issued by the World Trade Organization Technical
EN 843-1 Advanced Technical Ceramics—Monolithic
Barriers to Trade (TBT) Committee. Ceramics—Mechanical Properties at Room Temperature,
8
Part 1. Determination of Flexural Strength
2. Referenced Documents ENV 843-5 Advanced Technical Ceramics—Monolithic
Ceramics—Mechanical Properties at Room Temperature,
2.1 Order of Precedence:
8
Part 5, Statistical Analysis
2.1.1 In the event of a conflict between the text of this
3. Terminology
document and the references herein, the text of this document
takes precedence. Nothing in this document, however, super-
3.1 Definitions of Terms Specific to This Standard:
sedes applicable laws and regulations unless a specific exemp-
3.1.1 ball diameter variation, Vdws, n—ball diameter varia-
tion has been obtained.
tion is the difference between the largest and smallest diameter
measured on the same ball.
2
2.2 ASTM Standards:
C1161Test Method for Flexural Strength of Advanced
3
Ceramics at Ambient Temperature ApplicationforcopiesshouldbeaddressedtotheAmericanNationalStandards
Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://
C1421Test Methods for Determination of Fracture Tough-
www.ansi.org.
ness of Advanced Ceramics at Ambient Temperature
4
Application for copies should be addressed to theAmerican Bearing Manufac-
turer’sAssociation, 1200 19th Street NW, Suite 300, Washington, DC 20036-2401.
5
Application for copies should be addressed to the American Society of
Mechanical Engineers (ASME), ASME International Headquarters, Three Park
1
ThisspecificationisunderthejurisdictionofASTMCommitteeF34onRolling Ave., New York, NY 10016-5990, http://www.asme.org.
6
Element Bearings and is the direct responsibility of Subcommittee F34.01 on Application for copies should be addressed to theAvailable from International
Rolling Element. Organization for Standardization (ISO), ISO Central Secretariat, BIBC II, Chemin
Current edition approved April 1, 2018. Published July 2018. Originally de Blandonnet 8, CP 401, 1214 Vernier, Geneva, Switzerland, http://www.iso.org.
ɛ1
7
approved in 2001. Last previous edition approved in 2014 as F2094/F2094M–14 . Application for copies should be addressed to the Japanese Standards Organi-
DOI: 10.1520/F2094_F2094M-18. zation (JSA), 4-1-24 Akasaka Minato-Ku, Tokyo, 107-8440, Japan, http://
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or www.jsa.or.jp.
8
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Application for copies should be addressed to the British Standards Institute
Standards volume information, refer to the standard’s Document Summary page on (BSI), 389 Chiswick High Rd., LondonW4 4AL, U.K., http://www.bsi-global.com.
the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F2094/F2094M−18
3.1.2 ball gauge, S, n—prescribed small amount by which 3.1.15 lot mean diameter, Dwml, n—arithmetic mean of th
...
This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
´1
Designation: F2094/F2094M − 14 F2094/F2094M − 18
Standard Specification for
1
Silicon Nitride Bearing Balls
This standard is issued under the fixed designation F2094/F2094M; 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 (´) indicates an editorial change since the last revision or reapproval.
1
ε NOTE—Table 4 was editorially corrected in November 2016.
1. Scope
1.1 This specification covers the establishment of the basic quality, physical/mechanical property, and test requirements for
silicon nitride balls Classes I, II, and III to be used for ball bearings and specialty ball applications.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each
system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the
two systems may result in non-conformance with the standard.
1.3 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2.1 Order of Precedence:
2.1.1 In the event of a conflict between the text of this document and the references herein, the text of this document takes
precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been
obtained.
2
2.2 ASTM Standards:
C1161 Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature
C1421 Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature
2.3 ANSI Standard:
3
ANSI/ASQC Z1.4 Sampling Procedures and Tables for Inspection by Attributes
2.4 ABMA Standards:
4
STD 10 Metal Balls
2.5 ASME Standard:
5
B 46.1 Surface Texture (Surface Roughness, Waviness, and Lay)
6
2.6 ISO Standards:
4505 Hardmetals—Metallographic Determination of Porosity and Uncombined Carbon
2.7 JIS Standards:
7
R 1601 Testing Method for Flexural Strength (Modulus of Rupture) of High Performance Ceramics
7
R 1607 Testing Method for Fracture Toughness of High Performance Ceramics
1
This specification is under the jurisdiction of ASTM Committee F34 on Rolling Element Bearings and is the direct responsibility of Subcommittee F34.01 on Rolling
Element.
Current edition approved March 15, 2014April 1, 2018. Published March 2014July 2018. Originally approved in 2001. Last previous edition approved in 20132014 as
ɛ1
F2094/F2094M–13.–14 . DOI: 10.1520/F2094_F2094M-14E01.10.1520/F2094_F2094M-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
3
Application for copies should be addressed to the American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
4
Application for copies should be addressed to the American Bearing Manufacturer’s Association, 1200 19th Street NW, Suite 300, Washington, DC 20036-2401.
5
Application for copies should be addressed to the American Society of Mechanical Engineers (ASME), ASME International Headquarters, Three Park Ave., New York,
NY 10016-5990, http://www.asme.org.
6
Application for copies should be addressed to the Available from International Organization for Standardization (ISO), ISO Central Secretariat, BIBC II, Chemin de
Blandonnet 8, CP 401, 1214 Vernier, Geneva, Switzerland, http://www.iso.org.
7
Application for copies should be addressed to the Japanese Standards Organization (JSA), 4-1-24 Akasaka Minato-Ku, Tokyo, 107-8440, Japan, http://www.jsa.or.jp.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
F2094/F2094M − 18
2.8 CEN Standards:
EN 843-1 Advanced Technical Ceramics—Monolithic Ceramics—Mechanical Properties at Room Temperature, Part 1.
8
Determination of Flexural Strength
ENV 843-5 Advanced Technical Ceramics—Monolithic Ceramics—Mechanical Properties at Room Temperature, Part 5,
8
Statistical Analysis
3. Terminology
3.1 Definitions of
...
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