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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Materials and Manufacture 5.

The chromium and molybdenum support the proper formation of carbides resulting in good surface hardness and wear. Grain Size Coarse S9. The primary melting may incorporate separate degassing or re?

Where minimum and maximum sulfur contents are shown, awtm is indicative of resulfurized steel Silicon may be speci? Originally published as A — 47 T. This abstract is a brief summary of the referenced standard. These steels can be expected to contain 0. Cold Working Quality S4. Hot-wrought alloy steel bars are produced in cut lengths and coils; the manufacturer should be consulted regarding sections and sizes available in zstm, produced to a chemical composition.

Typical applications would be camshafts, axles, shafts, pistons, gears and bearings. These elements are considered as incidental and may be present to the following maximum amounts: The producer should be consulted in establishing the proper practice. ASTM Spec. 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.


Cold Shearing Quality S3. Your comments are invited either for revision of this standard or for axtm standards and should be addressed to ASTM International Headquarters. For best machining, it is often used in the annealed condition; however, when the amount of machining necessary is minimal or when the risk of distortion in heat treating a asym part is paramount, it is typically used in w322 quenched and tempered condition.

Hot rolled alloy bars are used when increased strength, toughness, wear resistance and fatigue resistance are required. The steel shall be made by one or more of the following primary processes: This standard has been approved for use by agencies of the Department of Defense.

This low a3322 nickel chromium molybdenum alloy is a low cost steel with good carburized properties.

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

Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.

The quality requirements of individual application vary. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.


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

Within 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 extent, will interfere with the use of the material in machining or fabrication of suitable parts.

The nickel content contributes to case toughness at high strength with above average core toughness.

Workmanship, Finish, and Appearance 7. The need for 0.

A superscript epsilon e indicates an editorial change since the last revision or reapproval. 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.

Standard Specification for Steel Bars, Alloy, Standard Grades

A number in parentheses indicates the year of last reapproval. Current edition approved Aug.

Individual reprints single or multiple copies of this standard a3222 be obtained by contacting ASTM at the above address or at phonefaxor service astm.

Typical applications are sprockets, bolts, chain pins, drill collars, universal joints, highly stressed parts or parts subject to severe wear. See Supplementary Requirement S9 or S