ASTM F2094/F2094M-14e1

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: 14-Mar-2014
• ICS: 21.100.01 - Bearings in general
• Technical Committee: F34 - Rolling Element Bearings
• Drafting Committee: F34.01 - Rolling Element

Relations

• Replaces: ASTM F2094/F2094M-14 - Standard Specification for Silicon Nitride Bearing Balls
• Effective Date: 15-Mar-2014
• Replaced By: ASTM F2094/F2094M-18 - Standard Specification for Silicon Nitride Bearing Balls
• Effective Date: 01-Apr-2018

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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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
´1
Designation:F2094/F2094M −14
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
ε NOTE—Table 4 was editorially corrected in November 2016.
1. Scope 2.4 ABMA Standards:
4
STD 10Metal Balls
1.1 This specification covers the establishment of the basic
2.5 ASME Standard:
quality, physical/mechanical property, and test requirements
B 46.1Surface Texture (Surface Roughness, Waviness, and
for silicon nitride balls Classes I, II, and III to be used for ball
5
Lay)
bearings and specialty ball applications.
2.6 ISO Standards:
4505Hardmetals—Metallographic Determination of Poros-
1.2 The values stated in either SI units or inch-pound units
3
are to be regarded separately as standard. The values stated in ity and Uncombined Carbon
2.7 JIS Standards:
each system may not be exact equivalents; therefore, each
R 1601Testing Method for Flexural Strength (Modulus of
system shall be used independently of the other. Combining
6
Rupture) of High Performance Ceramics
values from the two systems may result in non-conformance
R 1607Testing Method for Fracture Toughness of High
with the standard.
6
Performance Ceramics
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.
3. Terminology
2
2.2 ASTM Standards:
3.1 Definitions of Terms Specific to This Standard:
C1161Test Method for Flexural Strength of Advanced
3.1.1 ball diameter variation, Vdws, n—ball diameter varia-
Ceramics at Ambient Temperature
tion is the difference between the largest and smallest diameter
C1421Test Methods for Determination of Fracture Tough-
measured on the same ball.
ness of Advanced Ceramics at Ambient Temperature
3.1.2 ball gage, S, n—prescribedsmallamountbywhichthe
2.3 ANSI Standard:
lot mean diameter should differ from nominal diameter, this
ANSI/ASQC Z1.4Sampling Procedures and Tables for In-
amount being one of an established series of amounts. A ball
3
spection by Attributes
gage, in combination with the ball grade and nominal ball
diameter, should be considered as the most exact ball size
specification to be used by a customer for ordering purposes.
1
ThisspecificationisunderthejurisdictionofASTMCommitteeF34onRolling
Element Bearings and is the direct responsibility of Subcommittee F34.01 on
4
Rolling Element. Application for copies should be addressed to theAmerican Bearing Manufac-
Current edition approved March 15, 2014. Published March 2014. Originally turer’sAssociation, 1200 19th Street NW, Suite 300, Washington, DC 20036-2401.
5
approved in 2001. Last previous edition approved in 2013 as F2094/F2094M–13. Application for copies should be addressed to the American Society of
DOI: 10.1520/F2094_F2094M-14E01. Mechanical Engineers (ASME), ASME International Headquarters, Three Park
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or Ave., New York, NY 10016-5990, http://www.asme.org.
6
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Application for copies should be addressed to the Japanese Standards Organi-
Standards volume information, refer to the standard’s Document Summary page on zation (JSA), 4-1-24 Akasaka Minato-Ku, Tokyo, 107-8440, Japan, http://
the ASTM website. www.jsa.or.jp.
3 7
ApplicationforcopiesshouldbeaddressedtotheAmericanNationalStandards Application for copies should be addressed to the British Standards Institute
Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http:// (BSI), 389 Chiswick High Rd., LondonW4 4AL, U.K., http://www.bsi-global.com.
www.ansi.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−14
3.1.3 ball gage deviation,∆S, n—difference between the lot 3.1.16 material lot, n—single process lot of a blended
mean diameter and the sum of the nominal diameter and the powder(blendedwithadditives),producedfrom asinglelotof
ball gage. silicon nitride or sil
...

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 − 14
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.
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)
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 March 15, 2014. Published March 2014. Originally approved in 2001. Last previous edition approved in 2013 as F2094/F2094M–13. DOI:
10.1520/F2094_F2094M-14.10.1520/F2094_F2094M-14E01.
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

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F2094/F2094M − 14
3. Terminology
3.1 Definitions of Terms Specific to This Standard:
3.1.1 ball diameter 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, 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
...