ASTM A866-18
(Specification)Standard Specification for Medium Carbon Anti-Friction Bearing Steel
Standard Specification for Medium Carbon Anti-Friction Bearing Steel
ABSTRACT
This specification covers the standard specification for medium carbon bearing quality steel to be used in the manufacture of anti-friction bearings. The bearings shall conform to the required chemical composition for carbon, phosphorus, manganese, sulfur, silicon, chromium, molybdenum, vanadium, copper, oxygen and aluminum. Requirement for dimensional tolerances of hot-rolled or hot-rolled and annealed bars, in straight lengths or coils, and cold-finished bars and larger in diameter furnished shall conform to the specified size, shape and tolerances. The grain size of the material shall conform to the required size, otherwise it shall be normalized and retested. Decarburization and surface imperfection shall not exceed the limit in the specified values. Material may be ordered as hot rolled or thermally treated. No hardness limits shall apply for as-hot-rolled materials.
SCOPE
1.1 This specification covers medium carbon bearing quality steel to be used in the manufacture of anti-friction bearings.
1.2 Supplementary requirements of an optional nature are provided and when desired shall be so stated in the order.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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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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.
Designation: A866 −18
Standard Specification for
1
Medium Carbon Anti-Friction Bearing Steel
This standard is issued under the fixed designation A866; 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.
3
1. Scope* 2.2 ISO Standard:
ISO 683 Part 17: Ball and Roller Bearing Steels
1.1 This specification covers medium carbon bearing qual-
ity steel to be used in the manufacture of anti-friction bearings.
3. Ordering Information
1.2 Supplementary requirements of an optional nature are
3.1 Orders for material under this specification should
provided and when desired shall be so stated in the order.
include the following information:
1.3 The values stated in inch-pound units are to be regarded 3.1.1 Quantity (weight or pieces),
as standard. The values given in parentheses are mathematical
3.1.2 Grade identification,
conversions to SI units that are provided for information only 3.1.3 ASTM designation and year of issue,
and are not considered standard.
3.1.4 Dimensions, and
3.1.5 Supplementary requirements, if included.
1.4 This international standard was developed in accor-
dance with internationally recognized principles on standard-
4. Materials and Manufacture
ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom- 4.1 Process:
4.1.1 The steel shall be made by a process that is capable of
mendations issued by the World Trade Organization Technical
Barriers to Trade (TBT) Committee. providing a high quality product meeting the requirements of
this specification.
2. Referenced Documents
5. Chemical Composition and Analysis
2
2.1 ASTM Standards:
5.1 Typical examples of chemical composition are shown in
A29/A29M SpecificationforGeneralRequirementsforSteel
Table 1. Other compositions may be specified.
Bars, Carbon and Alloy, Hot-Wrought
A751 Test Methods, Practices, and Terminology for Chemi-
5.2 An analysis of each heat of steel shall be made by the
cal Analysis of Steel Products
steel manufacturer in accordance withTest Methods, Practices,
E45 Test Methods for Determining the Inclusion Content of
and Terminology A751. The chemical composition thus deter-
Steel
mined shall conform to the requirements specified in Table 1
E112 Test Methods for Determining Average Grain Size
for the ordered grade or to other requirements agreed upon
E381 Method of Macroetch Testing Steel Bars, Billets,
between the manufacturer and the purchaser.
Blooms, and Forgings
5.3 Product analysis may be made by the purchaser in
E1019 Test Methods for Determination of Carbon, Sulfur,
accordance with Test Methods, Practices, and Terminology
Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt
A751. Permissible variations in product analysis shall be in
Alloys by Various Combustion and Fusion Techniques
accordance with Specification A29/A29M.
E1077 Test Methods for Estimating the Depth of Decarbur-
ization of Steel Specimens
6. Sizes, Shapes, and Dimensional Tolerances
6.1 The physical size and shape of the material shall be
agreed upon between the manufacturer and the purchaser.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel,
6.2 Dimensional tolerances for hot-rolled or hot-rolled and
Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee
A01.28 on Bearing and Power Transmission Steels.
annealed bars, in straight lengths or coils, and cold-finished
Current edition approved May 1, 2018. Published May 2018. Originally
bars0.500in.(12.7mm)andlargerindiameterfurnishedunder
approved in 1987. Last previous edition approved in 2014 as A866 – 14. DOI:
10.1520/A0866-18.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Available from International Organization for Standardization (ISO), ISO
Standards volume information, refer to the standard’s Document Summary page on Central Secretariat, BIBC II, Chemin de Blandonnet 8, CP 401, 1214 Vernier,
the ASTM website. Geneva, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
A866 − 18
A,B
TABLE 1 Chemical Composition
C D
ISO Name C Mn P (max) S (max) Si Cr Mo V Cu (max) O (max) Al (max)
. . . 1030 0.28 to 0.34 0.60 to 0.9
...
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: A866 − 14 A866 − 18
Standard Specification for
1
Medium Carbon Anti-Friction Bearing Steel
This standard is issued under the fixed designation A866; 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 medium carbon bearing quality steel to be used in the manufacture of anti-friction bearings.
1.2 Supplementary requirements of an optional nature are provided and when desired shall be so stated in the order.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical
conversions to SI units that are provided for information only and are not considered standard.
1.4 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
2.1 ASTM Standards:
A29/A29M Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
E45 Test Methods for Determining the Inclusion Content of Steel
E112 Test Methods for Determining Average Grain Size
E381 Method of Macroetch Testing Steel Bars, Billets, Blooms, and Forgings
E1019 Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys by
Various Combustion and Fusion Techniques
E1077 Test Methods for Estimating the Depth of Decarburization of Steel Specimens
3
2.2 ISO Standard:
ISO 683 Part 17: Ball and Roller Bearing Steels
3. Ordering Information
3.1 Orders for material under this specification should include the following information:
3.1.1 Quantity (weight or pieces),
3.1.2 Grade identification,
3.1.3 ASTM designation and year of issue,
3.1.4 Dimensions, and
3.1.5 Supplementary requirements, if included.
4. Materials and Manufacture
4.1 Process:
4.1.1 The steel shall be made by a process that is capable of providing a high quality product meeting the requirements of this
specification.
1
This specification is under the jurisdiction of ASTM Committee A01 on Steel, Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.28
on Bearing and Power Transmission Steels.
Current edition approved Oct. 1, 2014May 1, 2018. Published November 2014May 2018. Originally approved in 1987. Last previous edition approved in 20092014 as
A866 – 09.A866 – 14. DOI: 10.1520/A0866-14.10.1520/A0866-18.
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
Available from International Organization for Standardization (ISO), 1, ch. de la Voie-Creuse, CP 56, CH-1211 Geneva 20,ISO Central Secretariat, BIBC II, Chemin de
Blandonnet 8, CP 401, 1214 Vernier, Geneva, Switzerland, http://www.iso.org.
*A Summary of Changes section appears at the end of this standard
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1
---------------------- Page: 1 ----------------------
A866 − 18
5. Chemical Composition and Analysis
5.1 Typical examples of chemical composition are shown in Table 1. Other compositions may be specified.
5.2 An analysis of each heat of steel shall be made by the steel manufacturer in accordance with Test Methods, Practices, and
Terminology A751. The chemical composition thus determined shall conform to the requirements specified in Table 1 for the
ordered grade or to other requirements agreed upon between the manufacturer and the purchaser.
5.3 Product analysis may be made by the purchaser in accordance with Test Methods, Practices, and Terminology A751.
Permissible variations in product analysis shall be in accordance with Specification A29/A29M.
6. Sizes, Shapes, and Dimensional Tolerances
6.1 The physical size and shape of the material shall be agreed upon between the manufacturer and the purchaser.
6.2 Dimensional tolerances for hot-rolled or hot-rolled and annealed bars, in strai
...
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