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WK5 New Standard Specification for Deformed and Plain, Low-Carbon, Chromium, Steel Bars for Concrete Reinforcement (DRAFT Rev 04 - May 12, 2003)

Developed by Subcommittee: A01.05
See Related Work by this Subcommittee
Date Initiated: 02-07-2003

1. Scope

1.    Scope1.1    This specification covers low-carbon, chromium, steel bars, deformed and plain for concrete reinforcement in cut lengths and coils. The standard sizes and dimensions of deformed bars and their number designations are given. 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. 1.2    Bars are of a single minimum yield strength level: namely, 100 000 psi [690 MPa], designated as Grade 100 [690]. NOTE 1 - Designers should be aware that typical design standards limit use of reinforcement with yield strength up to 80 000 psi [550 MPa] as defined by the strain of 0.35 %. 1.3.    Reinforcing bars shall be available in cut lengths or in coils or both. Deformed bars shall have a minimum yield strength and other tensile properties. Hot-rolled plain rounds in sizes up to and including 2.25 in. [57.2 mm] in diameter in coils or cut lengths when specified for dowels, spirals, structural ties, or bar supports shall be furnished under this specification and shall also meet the tensile properties requirements. Ductility properties for plain rounds shall be those of the nearest smaller nominal diameter deformed bar size. Requirements covering deformation dimensions and marking are not applicable to plain rounds.NOTE 2--Welding of the material in this specification should be approached with caution since no specific provisions have been included to enhance its weldability. When this steel is to be welded, a welding procedure suitable for the chemical composition and intended use or service should be used. 1.4   This specification is applicable for orders in either inch-pound units (as Specification A XXXX) or in SI units (as Specification A XXXXM). 1.5   The values stated in either inch-pound units or SI units are to be regarded as standard. Within the text, the SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.

Keywords
concrete reinforcement; deformations (protrusions); alloy steel bars; low carbon; chromium

The title and scope are in draft form and are under development within this ASTM Committee.