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Designation: A – 90b (Reapproved ). Standard carbon steel bars, hot rolled 1 in. diameter by 10 ft, ASTM A dated ___. SAE According to standards. ASTM A b Hot Rolled. Number. ASTM A /AM: Cold-drawn. Equivalent. USA AISI/SAE. Italy UNI. (ASTM) (Continued) ASTM A51 1 () ASTM A51 () ASTM A51 3 (a) ASTM A/AM () ASTM A () ASTM Ab.

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Internal metallurgical quality and consistency is also achieved by a meaningful reduction during the rolling process. Steel cleanliness can be achieved through the integrated route or through an additional refining step and cleaner iron bearing inputs into an EAF in a mini mill.

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This specification has got 53 grades under the category of non-resulfurized steels, 15 grades under the category of resulfurized steels and 5 grades under rephosphorized and resulfurized category.

Leave a Reply Cancel reply Your email address will not be published. Standards Subsctiption may be the perfect solution. SBQ steels are used for bolts, springs, cable wires, chains, tyre beads and many similar applications in automotive industry.

These steels are also used for a wide range of industrial applications.

Subscription pricing is determined by: Posted by Satyendra on May 27, in Ispat Digest 0 comments. Sulphur content in the 15 grades of the resulfurized steels also have different ranges of sulfur with a minimum of 0. We have no amendments or corrections for this standard.

Similar is the case of resulfurized and rephosphorized steels. SBQ steels are used in safety critical applications.

Pipe billet. Trade House BMZ JSC

Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. Special quality bar applications include forging, heat treating, cold drawing, machining, and many structural uses. Special bar quality SBQ steels represents a wide variety of higher quality carbon and alloy steels.


A guide for the selection of steel bars is contained in Practice A These steels are produced with more precise dimensions and chemistry.

Pipe billet

The products may also include hot rolled steel bars, cold finished steel bars. These steels are generally machined, forged or cold drawn during subsequent processing. The petroleum industry uses them to produce valves and pipeline couplings for oil extraction. Please first log in with a verified email before subscribing to alerts. Special bar quality steel may have products of shapes which can be classified into round, square and hexagonal bars.

This standard is also available to be included in Standards Subscriptions. Your Alert Profile lists the documents that will be monitored.

As the voice of the U. Hot-wrought special quality carbon 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. The term is used to describe steel long products for more demanding processing or end-use applications which cannot be met by merchant quality grades.

Asgm steels are at the higher end of the quality spectrum in both metallurgical consistency and dimensional accuracy. These steels are produced both in cut lengths and coils. Proceed to Checkout Continue Shopping. Add to Alert PDF. This makes the production route of these steels a bit complex. The specification of SBQ steels may range from plain carbon and carbon manganese steels to alloy and stainless steels containing different percentages of aluminum, nickel, chrome and other alloying elements.


Both these terms refer to steel types as well as to adtm products, and as they are often associated with the steel grades, they refer to billet and slab as well as bar.

ASTM A576-90b(2006) PDF

The chemistry of these steels is more complex than merchant quality steels. In order to achieve metallurgical quality, the steel has to be particularly clean. In the hand tools sector, they are used for hammers, screwdrivers and wrenches, among 90h. This standard is not included in any packages.


Designed by Elegant Themes Powered by WordPress. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. The range of carbon content in these steels varies from grade to grade with minimum of 0.

These steels have superior mechanical properties and defect free surface. ASTM standard A b covers specification for plain carbon special quality bar steels for applications which includes forging, heat treating, cold drawing, machining and many structural uses.

Need more than one copy? Fig 1 Some of the uses of SBQ steels in automotive industry. Some end uses of these steels may require superior surface quality, or special chemical restrictions, metallurgical characteristics, heat treatment or surface finishes. If the document is revised or amended, you will aztm notified by email. You may delete a document from your Alert Profile at any time.