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1.1 This specification covers hot-wrought special quality carbon steel bars. Special quality bar applications include forging, heat treating, cold drawing, machining, and many structural uses. A guide for the selection of steel bars is contained in Practice A400.
1.2 The bars shall be furnished in the grades specified in Table 1. Sections and sizes of bar steel available are covered in Specification A29/A29M. Hot-wrought special quality carbon steel bars are produced in cut lengths and coils; the manufacturer should be consulted regarding sections and sizes available in coils, produced to a chemical composition.
1.3 Merchant quality hot-wrought carbon steel bars are covered in Specification A575.
1.4 Some end uses may require superior surface quality, or special chemical restrictions, metallurgical characteristics, heat treatment, or surface finishes which the purchaser may obtain by designating one or more of the available Supplementary Requirements.
1.5 The values stated in inch-pound units are to be regarded as the standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
SAE StandardSAE J 1086 Recommended Practice for Numbering Metals and Alloys (UNS) Available from Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096.
A29/A29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for
A400 Practice for Steel Bars, Selection Guide, Composition, and Mechanical Properties
A575 Specification for Steel Bars, Carbon, Merchant Quality, M-Grades
E45 Test Methods for Determining the Inclusion Content of Steel
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
ICS Number Code 77.140.60 (Steel bars and rods)
UNSPSC Code 30263600(Carbon steel bars)