ASTM A295-98
(Specification)Standard Specification for High-Carbon Anti-Friction Bearing Steel
Standard Specification for High-Carbon Anti-Friction Bearing Steel
SCOPE
1.1 This specification covers high-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 the standard.
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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NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.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: A 295 – 98
Standard Specification for
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High-Carbon Anti-Friction Bearing Steel
This standard is issued under the fixed designation A 295; 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 (e) indicates an editorial change since the last revision or reapproval.
This standard has been approved for use by agencies of the Department of Defense.
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1. Scope ISO 683, Part 17 Ball and Roller Bearing Steels
1.1 This specification covers high-carbon bearing-quality
3. Ordering Information
steel to be used in the manufacture of anti-friction bearings.
3.1 Orders for material under this specification should
1.2 Supplementary requirements of an optional nature are
include the following information:
provided and when desired shall be so stated in the order.
3.1.1 Quantity,
1.3 The values stated in inch-pound units are to be regarded
3.1.2 Grade identification,
as the standard.
3.1.3 Specification designation and year of issue,
2. Referenced Documents 3.1.4 Dimensions, and
3.1.5 Supplementary requirements, if included.
2.1 ASTM Standards:
A 29/A 29M Specification for Steel Bars, Carbon and
4. Process
Alloy, Hot-Wrought and Cold-Finished, General Require-
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4.1 The steel shall be made by a process that is capable of
ments for
providing a high quality product meeting the requirements of
A 370 Test Methods and Definitions for MechanicalTesting
3
this specification.
of Steel Products
A 751 Test Methods, Practices, and Terminology for
5. Chemical Composition and Analysis
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Chemical Analysis of Steel Products
5.1 Typical examples of chemical compositions are shown
A 892 Guide for Defining and Rating the Microstructure of
2 in Table 1. Other compositions may be specified.
High Carbon Bearing Steels
5.2 An analysis of each heat of steel shall be made by the
E 45 Practice for Determining the Inclusion Content of
4 steel manufacturer in accordance withTest Methods, Practices,
Steel
and TerminologyA 751. The chemical composition thus deter-
E 381 Method of MacroetchTesting, Inspection, and Rating
mined shall conform to the requirements specified in Table 1
Steel Products, Comprising Bars, Billets, Blooms, and
for the ordered grade or to other requirements agreed upon
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Forgings
between manufacturer and purchaser.
E 1019 Test Methods for Determination of Carbon, Sulfur,
5.3 Product analysis may be made by the purchaser in
Nitrogen, Oxygen, and Hydrogen in Steel and in Iron,
5 accordance with Test Methods, Practices, and Terminology
Nickel, and Cobalt Alloys
A 751. Permissible variations in product analysis shall be in
E 1077 Test Method for Estimating the Depth of Decarbur-
4 accordance with Specification A 29/A 29M.
ization of Steel Specimens
2.2 Other Documents:
6. Sizes, Shapes, and Dimensional Tolerances
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SAE J418a Grain Size Determination of Steel
6.1 The physical size and shape of the material shall be
agreed upon between manufacturer and purchaser.
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6.2 Dimensional tolerances for hot-rolled or hot-rolled and
This specification is under the jurisdiction of ASTM Committee A-1 on Steel,
Stainless Steel and RelatedAlloys, and is the direct responsibility of Subcommittee
annealed bars, in straight lengths or coils, and cold-finished
A01.28 on Bearing Steels.
bars0.500in.(12.7mm)andlargerindiameterfurnishedunder
Current edition approved Dec. 10, 1998. Published February 1999. Originally
this specification shall conform to the requirements specified in
published as A 295 – 46 T. Last previous edition A 295 – 94.
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Annual Book of ASTM Standards, Vol 01.05. the latest edition of Specification A 29/29M.
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Annual Book of ASTM Standards, Vol 01.03.
4
Annual Book of ASTM Standards, Vol 03.01.
5
Annual Book of ASTM Standards, Vol 03.06.
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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.
A 295–98
A,B
TABLE 1 Composition
C
Element 52100 5195 UNS K19526 1070M 5160
Carbon 0.93-1.05 0.90-1.03 0.89-1.01 0.65-0.75 0.56-0.64
Manganese 0.25-0.45 0.75-1.00 0.50-0.80 0.80-1.10 0.75-1.00
Phosphorus (max) 0.025 0.025 0.025 0.025 0.025
Sulfur (max) 0.015 0.015 0.015 0.015 0.015
Silicon 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35 0.15-0.35
Chromium 1.35-1.60 0.70-0.90 0.40-0.60 0.20 (max) 0.70-0.90
Nickel (m
...
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