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ASTM A29/A29M-11a

Historical Revision

Standard Specification for General Requirements for Steel Bars, Carbon and Alloy, Hot-Wrought

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1.1 This specification covers a group of common requirements which, unless otherwise specified in the purchase order or in an individual specification, shall apply to carbon and alloy steel bars under each of the following ASTM specifications (or under any other ASTM specification which invokes this specification or portions thereof):

Title of SpecificationASTM
DesignationA
Hot-Rolled Carbon Steel Bars:
Steel Bars, Carbon, Quenched and Tempered A321
Steel Bars and Shapes, Carbon Rolled from T'' Rails A499
Steel Bars, Carbon, Merchant Quality, M-Grades A575
Steel Bars, Carbon, Hot-Wrought, Special Quality A576
Steel Bars, Carbon, Merchant Quality, Mechanical Properties A663/A663M
Steel Bars, Carbon, Hot-Wrought, Special Quality, Mechanical Properties A675/A675M
Steel Bars for Springs, Carbon and Alloy A689
Cold-Finished Carbon Steel Bars:
Steel Bars, Carbon and Alloy, Cold-Finished A108
Cold-Drawn Stress-Relieved Carbon Steel Bars Subject to Mechanical Property Requirements A311/A311M
Hot-Rolled Alloy Steel Bars:
Steel Bars, Alloy, Standard Grades A322
Carbon and Alloy Steel Bars Subject to End-Quench Hardenability Requirements A304
Steel Bars, Alloy, Hot-Wrought or Cold-Finished, Quenched and Tempered A434
Steel Bars, Alloy, Hot-Wrought, for Elevated Temperature or Pressure-Containing Parts, or Both A739
Cold-Finished Alloy Steel Bars:
Steel Bars, Alloy, Hot-Rolled or Cold-Finished, Quenched and Tempered A434
Steel Bars, Carbon, Hot-Wrought or Cold-Finished, Special Quality, for Pressure Piping Components A696

A These designations refer to the latest issue of the respective specifications, which appear either in the Annual Book of ASTM Standards, Vol 01.05, or as reprints obtainable from ASTM.

1.2 In case of any conflict in requirements, the requirements of the purchase order, the individual material specification, and this general specification shall prevail in the sequence named.

1.3 The values stated in inch-pound units or SI units are to be regarded as the 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.

1.4 For purposes of determining conformance to this specification and the various material specifications referenced in 1.1, dimensional values shall be rounded to the nearest unit in the right-hand place of figures used in expressing the limiting values in accordance with the rounding method of Practice E29.

Note 1—Specification A29 previously listed dimensional tolerances for cold-finished bars; these are now found in Specification A108.


This guide 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. Heat and product analysis shall be performed on several grades of carbon steel bars, wherein the material shall conform to the required chemical composition for carbon, manganese, phosphorus, and sulfur. Several grades of alloy steel bars shall also undergo heat and product analysis and shall meet the required chemical composition for carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, and molybdenum. When compositions other than those indicated in the specified chemical components are required, the composition limits shall be prepared using the specified ranges and limits for carbon steel and alloy steel. The material shall undergo grain size test and shall conform to the specified grain size requirement. Mechanical tests shall also be performed on the steel test specimens.


SDO ASTM: ASTM International
Document Number A29
Publication Date Oct. 1, 2011
Language en - English
Page Count 16
Revision Level 11a
Supercedes
Committee A01.15
Publish Date Document Id Type View
July 1, 2023 A0029_A0029M-23 Revision
July 1, 2020 A0029_A0029M-20 Revision
Dec. 1, 2016 A0029_A0029M-16 Revision
Nov. 1, 2015 A0029_A0029M-15 Revision
May 1, 2012 A0029_A0029M-12E01 Revision
May 1, 2012 A0029_A0029M-12 Revision
Oct. 1, 2011 A0029_A0029M-11A Revision
April 1, 2011 A0029_A0029M-11 Revision
May 1, 2005 A0029_A0029M-05 Revision
March 1, 2004 A0029_A0029M-04E01 Revision
March 1, 2004 A0029_A0029M-04 Revision
Sept. 10, 2003 A0029_A0029M-03 Revision
Aug. 10, 1999 A0029_A0029M-99E01 Revision