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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If the usual titanium additive is not permitted, the steels can be expected to contain up to 0. Bar applications include forging, heat treating, cold drawing, machining and many structural components Note 1. Materials and Manufacture 5.

Typical applications would be camshafts, axles, shafts, pistons, gears and bearings. A — 91 Reapproved e1 Standard Speci?

asrm Hot rolled alloy bars are used when increased strength, toughness, wear resistance and fatigue resistance are required. Where secondary remelting is employed, the heat shall be defined as all of the cast product remelted from a single primary heat.

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

Such treatments must be speci? These steels can be expected to contain 0. 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.

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.

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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 finished part is paramount, it is typically used in the quenched and tempered condition. It is the most widely used carburizing alloy. 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.

The primary melting may incorporate separate degassing or refining and may be followed by secondary melting using electro-slag remelting or vacuum arc remelting. This low carbon nickel chromium molybdenum alloy is a low cost steel with good carburized properties.

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

ASTM Spec. 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.

The chromium and molybdenum support the proper formation of carbides resulting in good surface adtm and wear.

Standard Specification for Steel Bars, Alloy, Standard Grades

Historical Version s – view previous versions of standard. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?

This standard has been approved for use by agencies of the Department of Defense. The steel shall be furnished as strand cast or ingot cast. See Supplementary Requirement S9 or S These elements are considered as incidental and may be present to the following maximum amounts: A32 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. Axle Shaft Quality S1.

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This abstract is a brief summary of the referenced standard. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above axtm or at phonefaxor service astm. This specification covers hot-wrought alloy steel bars. Aircraft Quality or Magna?

Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Cold Shearing Quality S3. This medium 3a22, 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. Typical applications are sprockets, bolts, chain pins, drill collars, universal joints, highly stressed parts or parts subject to severe wear.

The primary melting may incorporate separate degassing or re? Astn and sizes of bar steel available are covered in Speci? The steel shall be made by one or more of the following primary processes: Last previous edition A — 90b. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.