ASTM A295 / A295M - 09

    Standard Specification for High-Carbon Anti-Friction Bearing Steel

    Active Standard ASTM A295 / A295M | Developed by Subcommittee: A01.28

    Book of Standards Volume: 01.05


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    ASTM A295 / A295M

    Abstract

    This specification covers high-carbon bearing-quality steel to be used in the manufacture of anti-friction bearings. Materials shall conform to chemical compositions as specified herein, and to physical size and shape as agreed upon between the manufacturer and purchaser. Steels shall exhibit fine fracture grain size when quenched from normal austenitizing temperatures. Decarburization and surface imperfections shall not exceed the limits also specified herein. When annealing is specified in the order, the steel shall adhere to hardness requirements and have a completely spheroidized microstructure, which shall accordingly be rated and reported as carbide size, carbide network, and lamellar content.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. 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 either inch-pound units or SI 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    A29/A29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

    A892 Guide for Defining and Rating the Microstructure of High Carbon Bearing Steels

    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

    Other Document

    ISO683,Part17 Ball and Roller Bearing Steels Available from International Organization for Standardization (ISO), 1 rue de Varemb, Case postale 56, CH-1211, Geneva 20, Switzerland.


    ICS Code

    ICS Number Code 77.140.10 (Heat-treatable steels)

    UNSPSC Code

    UNSPSC Code 31171500(Bearings)


    DOI: 10.1520/A0295_A0295M-09

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