ASTM F2094/F2094M-13

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-Sep-2013
• ICS: 21.100.01 - Bearings in general
• Technical Committee: F34 - Rolling Element Bearings
• Drafting Committee: F34.01 - Rolling Element

Relations

• Replaces: ASTM F2094/F2094M-11 - Standard Specification for Silicon Nitride Bearing Balls
• Effective Date: 01-Oct-2013
• Replaced By: ASTM F2094/F2094M-14 - Standard Specification for Silicon Nitride Bearing Balls
• Effective Date: 15-Mar-2014

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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 −13
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 text 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, n—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, n—prescribedsmallamountbywhichthe
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, n—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 Oct. 1, 2013. Published October 2013. Originally
approved in 2001. Last previous edition approved in 2011 as F2094/F2094M–11.
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

---------------------- Page: 1 ----------------------
F2094/F2094M−13
3.1.4 ball grade, G, n—specificcombinationofdimensional 4.1.1 Class I—Highest grade of material in terms of prop-
form and surface roughness tolerances. A ball grade is desig- ertiesandmicrostructure.Suit
...

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.
Designation: F2094/F2094M − 11 F2094/F2094M − 13
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. 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.
2. Referenced Documents
2.1 Order of Precedence:
2.1.1 In the event of a conflict between the testtext 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)
2.6 ISO Standards:
3
4505 Hardmetals—Metallographic Determination of Porosity and Uncombined Carbon
2.7 JIS Standards:
6
R 1601 Testing Method for Flexural Strength (Modulus of Rupture) of High Performance Ceramics
6
R 1607 Testing Method for Fracture Toughness of High Performance Ceramics
2.8 CEN Standards:
EN 843-1 Advanced Technical Ceramics—Monolithic Ceramics—Mechanical Properties at Room Temperature, Part 1.
7
Determination of Flexural Strength
ENV 843-5 Advanced Technical Ceramics—Monolithic Ceramics—Mechanical Properties at Room Temperature, Part 5,
7
Statistical Analysis
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 May 1, 2011Oct. 1, 2013. Published May 2011October 2013. Originally approved in 2001. Last previous edition approved in 20082011 as
F2094/F2094M – 08.F2094/F2094M–11. DOI: 10.1520/F2094_F2094M-11.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. 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 Japanese Standards Organization (JSA), 4-1-24 Akasaka Minato-Ku, Tokyo, 107-8440, Japan, http://www.jsa.or.jp.
7
Application for copies should be addressed to the British Standards Institute (BSI), 389 Chiswick High Rd., London W4 4AL, U.K., http://www.bsi-global.com.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
F2094/F2094M − 13
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 ball diameter variation (Vdws)—variation, Vdws, n—ball diameter variation is the difference between the largest and
smallest diameter measured on the same ball.
3.1.2 ball gage (S)—gage, S, n—prescribed small amount by which the lot mean diameter should differ from nominal diameter,
this amount being one of an established series of amounts. A ball gage, in combination with the ball grade and nominal ball
diameter, should be considered as the mo
...