ASTM A29/A29M, “Standard Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for,” has just been revised to the 2011A Edition. This November update replaces the ASTM A29/A29M-11 Edition from April. The addition of the A to the date (ASTM A29/A29M-11a) reflects this change.
ASTM standards are normally reviewed on a five year cycle. So it is not all that common to have multiple revisions in any one year. ASTM’s protocol is to add a letter to the date to specify these differing revisions, starting with a, then b, and so on. The use of the letter also signifies that there has been change to the technical content. Should the revision be only editorial in nature, there will be the use of a differing mark in the document number ((e1), (e2) and so on).
ASTM A29/A29M covers a group of requirements for carbon and alloy steel bars under each of the following specifications: hot-rolled carbon steel bars, cold-finished carbon steel bars, hot-rolled alloy steel bars, and cold-finished alloy steel bars. It replaced the MIL-S-56033 specification (Steel Bars, Carbon and Alloy, Round, Square, and Flat (for Springs) back in 1975.
The specification covers a group of common requirements which apply to carbon and alloy steel bars for a long list of ASTM specifications. These documents are all referenced (called out) in ASTM A29/A29M itself.
Both current and historical ASTM standards are available from Document Center Inc. via our website, www.document-center.com. Or consider contacting us by phone (650-591-7600), fax (650-591-7617) or email (info@document-center.com). Our staff can review the documents with you should you need additional information in order to make your purchasing decision.