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    ASTM A31 - 14(2020)

    Standard Specification for Steel Rivets and Bars for Rivets, Pressure Vessels

    Active Standard ASTM A31 | Developed by Subcommittee: F16.02

    Book of Standards Volume: 01.09

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    This specification covers the chemical, mechanical, and dimensional requirements, and associated test methods for steel rivets for use in boilers and pressure vessels, and steel bars for use in the manufacture of such rivets. Two grades of steel are covered here, as follows: Grade A and Grade B. The steel used to make the rivets shall be manufactured by open-hearth, electric-furnace, or basic-oxygen process, and the corresponding rivets shall be manufactured from steel bars conforming to the applicable bar grade ordered. The steel shall undergo heat and product analysis for measurements of chemical contents for carbon, manganese, phosphorus, and sulfur. Finished bars and rivets shall go through rivet bend, rivet flattening, bar tensile, and bar bend tests for measurements of mechanical properties such as ratio of bend diameter to diameter of the shank for rivets, and tensile strength, yield point, elongation, and ratio of bend diameter to diameter of specimen for bars.

    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 specification2 covers steel rivets for use in boilers and pressure vessels and steel bars for use in the manufacture of rivets.

    1.2 Two grades are covered:

    1.2.1 Grade A—Bars having a yield point of 23 000 psi (160 MPa) minimum with carbon 0.18 % maximum.

    1.2.2 Grade B—Bars having a yield point of 29 000 psi (200 MPa) minimum with carbon 0.28 % maximum.

    1.2.3 Rivets are manufactured from the applicable bar grade.

    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 (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 General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

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

    F1470 Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection

    ICS Code

    ICS Number Code 21.060.40 (Rivets)

    UNSPSC Code

    UNSPSC Code 31162200(Rivets); 11101704(Steel)

    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/A0031-14R20

    Citation Format

    ASTM A31-14(2020), Standard Specification for Steel Rivets and Bars for Rivets, Pressure Vessels, ASTM International, West Conshohocken, PA, 2020, www.astm.org

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