(Identical to ASTM Specification A /A M (R) except for deletion of , revision of Table 1 footnote A, and editorial corrections to Table 2.) 1. A Class B Stressproof TG&P Cold Finished Bar Round Turned Ground Polished, A Round Bar, A Rod, A TG&P Rod, A TG&P Round Rod . See the chemical composition and physical properties of ASTM A Grade cold-drawn, stress relieved, annealed bar, find alternative materials, and.
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The bars are furnished in two classes, A and B. Standard “as drawn” finish is smooth, Accurate and dark in color. Combining values from the two astmm may result in nonconformance with the speci?
Niagara LaSalle developed this groundbreaking process in and forever w311 the economics of part production. Historical Version s – view previous versions of standard.
Nonmetallic Inclusion Requirements Microscopical S4. To further improve quality, Niagara LaSalle reduced the standard seam depth tolerance for StressProof from 0. Restricted Cast or Heat Analysis the surface of the material. Warpage tests are also regularly made as part of a standard quality assurance procedure.
This specification covers cold-drawn, stress-relieved carbon steel bars subject to mechanical property requirements. 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. Details of these requirements shall be agreed upon between the manufacturer and the purchaser.
Tension test shall be made to conform to the requirements specified. Restricted Incidental Elements S2. One class, B, is cold drawn with higher than normal heavy drafts to provide higher a131 levels, and four grades provide improved machinability.
Within the text, the SI units are shown in brackets.
The importance of high temperature stress relieving to obtain maximum ductility, minimum warpage and excellent machinability is a major part of the original patent. One warpage test is taken of first bar produced by a new or reground specialty designed drawing die.
Where secondary melting is employed, the heat shall be de? The yield strength shall be determined at 0. The stress relieving temperature selection is based on 60 years of experience and thorough a11. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The steel shall be made by one or more of the following primary processes: The primary melting may incorporate separate degassing or re?
The cast or heat analysis shall conform to the chemical composition requirements specified. This abstract is a brief summary of the referenced standard.
Niagara Lasalle Steel Products – Stressproof ®, ASTM A, Cold Rolled Steel Round Rod
Class A are normal-draft cold-drawn and stress-relieved rounds, squares, hexagons, and flats. A lot shall consist of bars of the same size from the same heat which have been stress relieved in the same stationary furnace charge.
One class, B, is cold drawn with higher than normal heavy drafts to provide higher strength levels, and four grades provide improved machinability. Ground and Polished with special close tolerances available on order. For continuous type of treatment, a lot shall consist of 25 tons [25 Mg] or z311 of the same size of each heat, treated in the same cycle.
In this modern age, uniformity in the machinability of a product is a crucial factor in improved productivity, and we not only met this critical need, but exceeded expectations. And, most importantly, help reduce your manufacturing costs. Maximum seam depth of 0.
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. Seams deeper than this are rejectable.
Combining values from the two systems may result in nonconformance with the specification. NOTE 1— A typical ordering description is as follows: The report shall include the name of the manufacturer, ASTM designation and year date and revision letter, if any, class and grade, heat number, size, and grain size if requested.
A Steel Bar | Capital Steel & Wire
Resulfurized steels are not subject to inclusion ratings. Workmanship, Finish, and Appearance An optical comparator test is made of a mold from each new or reground die measuring the internal geometry of the die. To learn more about StressProof asrm any of our specialty products, please contact us.
Within the limits of good manufacturing and inspection practices, the bars shall be free of injurious seams, laps, segregation, or other imperfections that, due to their nature, degree, or extent, will interfere with the use of the material in machining or fabrication of suitable parts.
A uniform material which provides exceptional quality for Production, maintenance or special machine parts. It covers multiple grades and numerous conditions of stress-relieved cold drawn bars to meet minimum mechanical property requirements. Link to Active This link will always route to the current Active version of the standard. The result is a steel bar product that meets stringent standards and provides a wide variety of benefits, including:. If this test indicates stresses are out of specification, the die is not used.