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 .
|Published (Last):||10 November 2018|
|PDF File Size:||14.85 Mb|
|ePub File Size:||14.41 Mb|
|Price:||Free* [*Free Regsitration Required]|
Typical applications are sprockets, bolts, chain pins, drill collars, universal a32, highly stressed parts or parts subject to severe wear. This standard has been approved for use by agencies of the Department of Defense. Link to Active This link will always route to the current Active version of the standard. If the usual titanium additive is not permitted, the steels can be expected to contain up to 0.
ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. 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.
This standard is subject to astk at any time by the responsible technical committee and must be reviewed every? The need for 0. A guide for the selection of steel bars is contained in Practice A 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.
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 abstract is a brief summary of the referenced standard. 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 a32 fabrication of suitable parts.
Hot rolled alloy bars are used when increased strength, toughness, wear resistance and fatigue resistance are required. It can be readily nitride for improved surface wear. A — 91 Reapproved e1 Standard Speci? ASTM Spec. 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.
Workmanship, Finish, and Appearance 7. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The nickel content contributes to case toughness at high strength with above average core toughness.
The steel shall be made by one or more of the following primary processes: Where secondary remelting is employed, the heat shall be defined as all of the cast product remelted from a single primary heat.
A number astmm parentheses indicates the year of last reapproval.
Alloy Hot Rolled Round Steel Bar ASTM A | Wisconsin Steel & Tube
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.
The primary melting may incorporate asmt degassing or re? This low carbon nickel chromium molybdenum alloy is a low cost steel with good carburized properties. Cold Working Quality S4. 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 w322 condition.
Materials and Manufacture 5. Aircraft Quality or Magna?
See Supplementary Requirement S9 or S Such steels are identi? Grain Size Fine S ASTM does not give any warranty express a32 implied or make any representation that the contents of this abstract are accurate, complete or up to date. 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 specification covers hot-wrought alloy steel bars. Where minimum and maximum sulfur contents are shown, it is indicative of resulfurized steel Silicon z322 be speci?
This medium carbon, a3222, through-hardening alloy steel has a good hardenability with high strength and toughness as well as good fatigue and impact resistance after heat treating. Such treatments must be speci? Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. The quality requirements of individual application vary. Grain Size Coarse S9. Sections and sizes of bar steel available are covered in Speci?
ASTM A – 13() Standard Specification for Steel Bars, Alloy, Standard Grades
Typical applications would be camshafts, axles, shafts, pistons, gears and bearings. The chromium and molybdenum support the proper formation of carbides resulting in good surface hardness and wear. Last previous edition A — 90b.
Axle Shaft Quality S1. 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.
ASTM A322 1991 Standard Specification for Steel Bars, Alloy, Standard Grades
Bar applications include forging, heat treating, cold drawing, machining and many structural components Note 1. 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. Grade compositions correspond to the respective AISI compositions. Bar applications include forging, heat treating, cold drawing, machining and many structural components Note 1.