ASTM A722 / A722M - 12

    Standard Specification for Uncoated High-Strength Steel Bars for Prestressing Concrete

    Active Standard ASTM A722 / A722M | Developed by Subcommittee: A01.05

    Book of Standards Volume: 01.04


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    Abstract

    This specification covers uncoated high-strength steel bars intended for use in pretensioned and post-tensioned prestressed concrete construction or in prestressed ground anchors. Two types of bars are considered: Type I bar, which has a plain surface and Type II bar, which has surface deformations. The bars shall be rolled from properly identified heats of ingot cast or strand cast steel. The bars shall be subjected to cold-stressing and then shall be stress-relieved to produce the prescribed mechanical properties. Yield strength, elongation, and tension tests shall be performed.

    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 uncoated high-strength steel bars intended for use in pretensioned and post-tensioned prestressed concrete construction or in prestressed ground anchors. Bars are of a minimum ultimate tensile strength level of 1035 MPa (150 000 psi).

    1.2 Two types of bars are provided: Type I bar has a plain surface and Type II bar has surface deformations.

    1.3 Supplementary requirements of an optional nature are provided. They shall apply only when specified by the purchaser.

    1.4 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 specification.


    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

    A370 Test Methods and Definitions for Mechanical Testing of Steel Products

    A700 Practices for Packaging, Marking, and Loading Methods for Steel Products for Shipment

    E30 Test Methods for Chemical Analysis of Steel, Cast Iron, Open-Hearth Iron, and Wrought Iron

    Government Standards

    MIL-STD-129 Marking for Shipment and Storage

    U.S. Federal Standards


    ICS Code

    ICS Number Code 77.140.15 (Steels for reinforcement of concrete)

    UNSPSC Code

    UNSPSC Code 30103623(Reinforcing bar or rebar or mesh)


    Referencing This Standard

    DOI: 10.1520/A0722_A0722M-12

    ASTM International is a member of CrossRef.

    Citation Format

    ASTM A722 / A722M-12, Standard Specification for Uncoated High-Strength Steel Bars for Prestressing Concrete, ASTM International, West Conshohocken, PA, 2012, www.astm.org

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