ASTM F2094/F2094M-11

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.

General Information

• Status: Historical
• Publication Date: 30-Apr-2011
• ICS: 21.100.01 - Bearings in general
• Technical Committee: F34 - Rolling Element Bearings
• Drafting Committee: F34.01 - Rolling Element

Relations

• Replaces: ASTM F2094/F2094M-08 - Standard Specification for Silicon Nitride Bearing Balls
• Effective Date: 01-May-2011
• Replaced By: ASTM F2094/F2094M-13 - Standard Specification for Silicon Nitride Bearing Balls
• Effective Date: 01-Oct-2013

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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:F2094/F2094M −11
StandardSpecification 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 2.5 ASME Standard:
B 46.1Surface Texture (Surface Roughness, Waviness, and
1.1 This specification covers the establishment of the basic
5
Lay)
quality, physical/mechanical property, and test requirements
for silicon nitride balls Classes I, II, and III to be used for ball 2.6 ISO Standards:
4505Hardmetals—Metallographic Determination of Poros-
bearings and specialty ball applications.
3
ity and Uncombined Carbon
1.2 The values stated in either SI units or inch-pound units
2.7 JIS Standards:
are to be regarded separately as standard. The values stated in
R 1601Testing Method for Flexural Strength (Modulus of
each system may not be exact equivalents; therefore, each
6
Rupture) of High Performance Ceramics
system shall be used independently of the other. Combining
R 1607Testing Method for Fracture Toughness of High
values from the two systems may result in non-conformance
6
Performance Ceramics
with the standard.
2.8 CEN Standards:
2. Referenced Documents
EN 843-1 Advanced Technical Ceramics—Monolithic
2.1 Order of Precedence:
Ceramics—Mechanical Properties at Room Temperature,
7
2.1.1 In the event of a conflict between the test of this Part 1. Determination of Flexural Strength
document and the references herein, the text of this document
ENV 843-5 Advanced Technical Ceramics—Monolithic
takes precedence. Nothing in this document, however, super- Ceramics—Mechanical Properties at Room Temperature,
7
sedes applicable laws and regulations unless a specific exemp-
Part 5, Statistical Analysis
tion has been obtained.
2 3. Terminology
2.2 ASTM Standards:
C1161Test Method for Flexural Strength of Advanced 3.1 Definitions of Terms Specific to This Standard:
Ceramics at Ambient Temperature 3.1.1 ball diameter variation (Vdws)—ball diameter varia-
C1421Test Methods for Determination of Fracture Tough- tion is the difference between the largest and smallest diameter
ness of Advanced Ceramics at Ambient Temperature measured on the same ball.
2.3 ANSI Standard:
3.1.2 ball gage (S)—prescribed small amount by which the
ANSI/ASQC Z1.4Sampling Procedures and Tables for In-
lot mean diameter should differ from nominal diameter, this
3
spection by Attributes
amount being one of an established series of amounts. A ball
gage, in combination with the ball grade and nominal ball
2.4 ABMA Standards:
4
STD 10Metal Balls diameter, should be considered as the most exact ball size
specification to be used by a customer for ordering purposes.
3.1.3 ball gage deviation (∆S)—difference between the lot
1
ThisspecificationisunderthejurisdictionofASTMCommitteeF34onRolling
mean diameter and the sum of the nominal diameter and the
Element Bearings and is the direct responsibility of Subcommittee F34.01 on
ball gage.
Rolling Element.
Current edition approved May 1, 2011. Published May 2011. Originally
approved in 2001. Last previous edition approved in 2008 as F2094/F2094M–08.
DOI: 10.1520/F2094_F2094M-11.
2 5
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Application for copies should be addressed to the American Society of
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Mechanical Engineers (ASME), ASME International Headquarters, Three Park
Standards volume information, refer to the standard’s Document Summary page on Ave., New York, NY 10016-5990, http://www.asme.org.
6
the ASTM website. Application for copies should be addressed to the Japanese Standards Organi-
3
ApplicationforcopiesshouldbeaddressedtotheAmericanNationalStandards zation (JSA), 4-1-24 Akasaka Minato-Ku, Tokyo, 107-8440, Japan, http://
Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:// www.jsa.or.jp.
7
www.ansi.org. Application for copies should be addressed to the British Standards Institute
4
Application for copies should be addressed to theAmerican Bearing Manufac- (BSI), 389 Chiswick High Rd., LondonW4 4AL, U.K., http://www.bsi-global.com.
turer’sAssociation, 1200 19th Street NW, Suite 300, Washington, DC 20036-2401.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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F2094/F2094M−11
3.1.4 ball grade (G)—specific combination of dimensional Light weight, chemical inertness, lubricant life extension due
form and surface roughness tolerances. A ball grade is desig- to dissimilarity with race
...

This document is not anASTM standard and is intended only to provide the user of anASTM 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:F2094–06 Designation: F2094/F2094M – 11
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.
1
Asuperscript epsilon (´) indicates an editorial change since the last revision or reapproval. ´ NOTE—Table 2 was editorially corrected
in June 2007.
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 aremay not be exact equivalents; therefore, each system mustshall be used independently of the other. Combining values
from the two systems may result in non-conformance with the specification. standard.
2. Referenced Documents
2.1 Order of Precedence:
2.1.1 In the event of a conflict between the test 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 ASTM Standards:
C373Test Method for Water Absorption, Bulk Density, Apparent Porosity, and Apparent Specific Gravity of Fired Whiteware
2
Products ASTM Standards:
C1161 Test Method for Flexural Strength of Advanced Ceramics at Ambient Temperature
C1198Test Method for Dynamic Young’s Modulus, Shear Modulus, and Poisson’s Ratio for Advanced Ceramics by Sonic
Resonance
C1239Practice for Reporting Uniaxial Strength Data and Estimating Weibull Distribution Parameters for Advanced Ceramics
C1327Test Method for Vickers Indentation Hardness of Advanced Ceramics
C1421 Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature
E165Practice for Liquid Penetrant Examination for General Industry
E384Test Method for Knoop and Vickers Hardness of Materials
E831Test Method for Linear Thermal Expansion of Solid Materials by Thermomechanical Analysis
E1417Practice for Liquid Penetrant Testing 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:
STD 1Terminology for Anti-Friction Ball and Roller Bearings and Parts
4
STD 10 Metal Balls
2.5 ASME Standard:
5
B 46.1 Surface Texture (Surface Roughness, Waviness, and Lay)
2.6 DIN Standards:
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 Nov.May 1, 2006.2011. Published December 2006.May 2011. Originally approved in 2001. Last previous edition approved in 20032008 as
F2094–03a.F2094/F2094M–08. DOI: 10.1520/F2094-06E01.10.1520/F2094_F2094M-11.
2
ForreferencedASTMstandards,visittheASTMwebsite,www.astm.org,[e-mail] 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 WestW. 43rd Street,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, 345 East Street, New York, NY 10017.
5
Application for copies should be addressed to theAmerican Society of Mechanical Engineers (ASME),ASME International Headquarters, Three ParkAve., NewYork,
NY 10016-5990, http://www.asme.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
1

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F2094/F2094M – 11
5401Rolling Bearings; Balls of Through-Hardening Rolling Bearing Steel, Part 1
5401Rolling Bearings; Balls of Through-Hardening Rolling Bearing Steel, Part 2
2.7 ISO Standards:
3
3290Rolling Bearings, Bearing Parts, Balls for Rolling Bearings
3
4505 Hardmetals—Metallographic Determination of Porosity and Uncombined Carbon
2.8
2
...