Designation: A – 91 (Reapproved ) e1 Standard Specification for Steel Bars, Alloy, Standard Grades 1 This s. See the chemical composition and physical properties of ASTM A Grade , find alternative materials, and connect with suppliers. Alloy Hot Rolled Round Steel Bar ASTM A Hot rolled alloy bars are used when increased strength, toughness, wear resistance and fatigue resistance are .

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See Supplementary Requirement S9 or S If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below. If the usual titanium additive is not permitted, the steels can be expected to contain up to 0.

ASTM A – 13() Standard Specification for Steel Bars, Alloy, Standard Grades

A — 91 Reapproved e1 Standard Speci? Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Grade compositions correspond to the respective AISI compositions.

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. Hot rolled alloy bars are used when increased strength, toughness, wear resistance and fatigue resistance are required.

This medium carbon, chromium-molybdenum, through-hardening alloy steel has a good hardenability with high strength and toughness as well as good fatigue and impact resistance after heat treating. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard.


Originally published as A — 47 T. ASTM Spec. Your comments are invited either aa322 revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.

Alloy Hot Rolled Round Steel Bar ASTM A | Wisconsin Steel & Tube

The producer should be consulted in establishing the proper practice. Sections and sizes of bar steel available are covered in Speci? Cold Working Quality S4. It is the most widely used carburizing alloy. The report shall include the name of the manufacturer, ASTM designation and year date and revision letter, if any, type and grade, heat number, and size. Immediately after hot forming, the bars shall be allowed to cool to a temperature below the critical range under suitable conditions to prevent imperfections caused by too rapid cooling.

This low carbon nickel chromium molybdenum alloy is a low cost steel with good carburized properties. The steel shall be made by one or more of the following primary processes: Materials and Manufacture 5. Typical applications for hot rolled bar include gears, pinions, shafts, and other applications where it is helpful to have a steel that can be readily machined and carburized to controlled case depths.

ASTM A322 1991 Standard Specification for Steel Bars, Alloy, Standard Grades

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. The quality requirements of individual application vary. Last previous edition A — 90b. Grain Size Fine S Below you will find a comprehensive chart detailing each grade, their applications as well as measurements for each in ROUND shape.


Historical Version s – view previous versions of standard. Where secondary melting is employed, the heat shall be de? Axle Shaft Quality S1. These elements are considered as incidental and may be present to the following maximum amounts: Where secondary remelting is employed, the heat shall be defined as all of the cast product remelted from a single primary heat. Grain Size Coarse S9. This standard has been approved for use by agencies of the Department of Defense.

Hot-wrought alloy 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.

Typical applications would be camshafts, axles, shafts, pistons, gears and bearings. Such steels are identi?

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? W322 the limits of good manufacturing and inspection practices, the bars shall be free of injurious seams, laps, segregation, or other imperfections which are due to their nature, degree, or astk, will interfere with the use of the material in machining or fabrication of suitable parts.

This specification covers hot-wrought alloy steel bars. A number in parentheses indicates the year of last reapproval.