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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.
1.1 This specification covers Type I and Type II high-strength steel bars intended for use in prestressed concrete construction or in prestressed ground anchors. Type I bars have a plain surface. Type II bars have surface deformations. Bars are of a minimum tensile strength level of 150 000 psi [1035 MPa].
1.2 A supplementary requirement (S1) is provided for use where bend tests of bars are required by the purchaser. The supplementary requirement applies only when specified in the purchase order.
1.3 The text of this specification references notes and footnotes which provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the specification.
1.4 This specification is applicable for orders in either inch-pound units (as Specification ) or in SI units (as Specification ).
1.5 The values stated in either inch-pound or SI units are to be regarded separately as standard. Within the text, the SI units are shown in brackets. 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.
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 StandardsMIL-STD-129 Marking for Shipment and Storage
U.S. Federal Standards
ICS Number Code 77.140.15 (Steels for reinforcement of concrete)
UNSPSC Code 30103623(Reinforcing bar or rebar or mesh)
ASTM A722 / A722M-15, Standard Specification for High-Strength Steel Bars for Prestressed Concrete, ASTM International, West Conshohocken, PA, 2015, www.astm.orgBack to Top