You are on page 1of 6 Search inside document Designation: A 90b Reapproved Standard Specication for Steel Bars, Carbon, Hot-Wrought, Special Quality1 This standard is issued under the xed designation A ; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision. 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.
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A number in parentheses indicates the year of last reapproval. This standard has been approved for use by agencies of the Department of Defense. Special quality bar applications includeforging, heat treating, cold drawing, machining, and manystructural uses. A guide for the selection of steel bars iscontained in Practice A Hot-wrought special quality carbonsteel bars are produced in cut lengths and coils; the manufac-turer should be consulted regarding sections and sizes availablein coils, produced to a chemical composition.
Referenced Documents2. Ordering Information3. NOTE 1—Atypical ordering description is as follows: 10 lb, carbonsteel bars, hot rolled 1 in. Materials and Manufacture4. The primary melting may incor-porate separate degassing or refining and may be followed bysecondary melting using electroslag remelting or vacuum arcremelting. Where secondary melting is employed, the heatshall be defined as all of the ingots remelted from a singleprimary heat. Current edition approved March 1, Published April Originallyapproved in Last previous edition approved in as A — 90b DOI: NOTE 2—Assured coarse grain size is not always possible since certainelements or combination of elements or certain quantities of elements suchas manganese, sulfur, and lead tend to produce grain refinement.
Chemical Composition5. Workmanship, Finish, and Appearance6. Certification and Test Reports7. When the amount of an elementpresent is less than 0.
ASTM A576 Grade 1018
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