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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ASTM Spec. A — 91 Reapproved e1 Standard Speci?

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

A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. Bar applications include forging, heat treating, cold drawing, machining and many structural components Note 1. Materials and Manufacture 5. The primary melting may incorporate separate degassing or re?

ASTM A Standard Specification for Steel Bars, Alloy, Standard

Where secondary melting is employed, the heat shall be de? See Supplementary Requirement S9 or S Sections and sizes of bar steel available are covered in Speci? 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.


Current edition approved Aug. Originally published as A — 47 T. Last previous edition A — 90b. Such treatments must be speci? These q322 are considered as incidental and may be present to the following maximum amounts: B Standard alloy steels can be produced with a lead range of 0.

Such steels are identi? Grade compositions correspond to the respective AISI compositions. Where minimum and maximum sulfur contents are shown, it is indicative of resulfurized steel Silicon may be speci? The need for 0. These steels can be expected to contain 0.

If the usual titanium additive is not permitted, the steels can be expected to contain up to 0. Workmanship, Finish, and Appearance 7. Within the limits of good manufacturing and inspection practices, the bars shall be free of injurious seams, laps, segregation, or other imperfections which due to their nature, degree, or extent, will interfere with the use of the material in machining or fabrication of suitable parts.

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. Axle Shaft Quality S1.

ASTM A322 Grade 4140

Cold Shearing Quality S3. The producer should be consulted in establishing the proper practice.


Cold Working Quality S4. The quality requirements of individual application vary.

Aircraft Quality or Magna? Grain Size Coarse S9. Grain Size Fine S ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. 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.

This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

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