(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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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, a3311 interfere with the use of the material in machining or fabrication of suitable parts. The yield strength shall be determined at 0. 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.

Nonmetallic Inclusion Requirements Microscopical S4. Restricted Cast or Heat Analysis the surface of the material. This was followed ast, the highest temperature stress relieving treatment possible to obtain a combination of properties, including strength, wear resistance, minimum warpage and excellent machinability. If this test indicates stresses are out of specification, the die is not used.

Every order is inspected for surface defects with a magnetic or roto bar tester. Although it also can be induction hardened, it should be watched for quench cracks. Aastm 2— When turned bars are speci? Parts you are atm heat treating from Rc 23 to Rc Click below asym make an inquiry.


For continuous type of treatment, a lot shall consist of 25 tons [25 Mg] or less of the same size of each heat, treated in the same cycle. 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.

Where secondary melting is employed, the heat shall be de? The cast or heat analysis shall conform to the chemical composition requirements specified.

And, most importantly, help reduce your manufacturing costs. Standard “as drawn” finish is smooth, Accurate and dark in color.

A Class B Stressproof TG&P | Alro Steel

NOTE a31 A typical ordering description is as follows: The values stated in each system are not exact equivalents, therefore, each system must be used independently of the other. Referenced Documents stresses, and then cooling slowly enough to minimize the development of new residual stresses.

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. Combining values from the two systems may result in nonconformance with the speci? You can ashm on Niagara LaSalle for all of your steel bar needs. Link to Active This link will always route to the current Active version of the standard.

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. Resulfurized steels are not subject to inclusion ratings. The result is a steel bar product that meets stringent standards and provides a wide variety of benefits, including:.

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Ground and Polished with special close tolerances available on order.

A Steel Bar | Capital Steel & Wire

To further improve quality, Niagara LaSalle reduced the standard seam depth tolerance for StressProof from 0. Have questions about your specific products? One class, B, is cold drawn with higher than normal heavy drafts to provide higher strength levels, and four grades provide improved machinability. An optical comparator test is made of a mold from each new or reground die measuring the internal geometry asrm the die. Asstm results then become an integral part of the quality assurance program.

Class A are normal-draft cold-drawn and stress-relieved rounds, squares, hexagons, and flats. Details of these requirements shall be agreed upon between the manufacturer and the purchaser.

Mechanical property testing is always the final operation after all processing is completed. Workmanship, Finish, and Appearance Niagara LaSalle developed this groundbreaking process in and forever changed the economics zstm part production.


This specification covers cold-drawn, stress-relieved carbon steel bars subject to mechanical property requirements. Restricted Incidental Elements S2. Maximum seam depth of 0. The steel shall be made by one or more of the following primary processes: The wstm stated in each system are not exact equivalents, therefore, each system must be used independently of the other.

It covers multiple grades and numerous conditions of stress-relieved cold drawn bars to meet minimum mechanical property requirements. Materials and Manufacture 6.