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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We have no amendments or corrections for this standard. The products may also include hot rolled steel bars, cold finished steel bars.

Donate Grateful for your donation! Fig 1 Some of the uses of SBQ steels in automotive industry.

Designed by Elegant Themes Powered by WordPress. SBQ steels are used in safety critical applications.

Special bar quality steel may have products of shapes which can be classified into round, square and hexagonal bars. The chemistry of these steels is more complex than merchant quality steels. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards. 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.

You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. SBQ steels are used for wind turbine components, bearings and seamless tubes.

If the document is revised or amended, you will be notified by email. Standards Subsctiption may be the perfect solution.

Need more than one copy? Sulphur content in the 15 grades of the resulfurized 90g also have different ranges of sulfur with a minimum of 0.



You may delete a document from your Alert Profile at any time. These steels are produced with more precise dimensions and chemistry. Some end uses of these steels may require superior surface quality, or special chemical restrictions, metallurgical characteristics, heat treatment or surface finishes. 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.

Quality SAE Chemical composition Temperature °C

Posted by Satyendra on 9b0 27, in Ispat Digest 0 comments. Special bar quality SBQ steels represents a wide variety of higher quality carbon and alloy steels. 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.

A guide for the selection of steel bars is contained in Practice A Internal metallurgical quality and consistency is also achieved by a meaningful reduction during the rolling process.

Pipe billet

These steels are also used for a wide range of industrial applications. Leave a Reply Cancel reply Your email address will not be published. Please first log in with a verified email before subscribing to alerts.

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. Most producers see ties to the automotive industry as the key drivers of the SBQ steel grades.

This makes the production route of these steels a bit complex. Proceed to Checkout Continue Shopping. Add to Alert PDF. SBQ steels are at the higher end of the quality spectrum in both metallurgical consistency and dimensional accuracy.

The internal quality of these steels is very important since machining and bending activities are involved during the processing of these steels in subsequent stages.


Hot-rolled round section. Trade House BMZ JSC

Please first verify your email before subscribing to alerts. As the voice of the U. These steels ashm generally machined, forged or cold drawn during subsequent processing.

Subscription pricing is determined by: In order to achieve sstm quality, the steel has to be particularly clean. Your email address will not be published. Although there is no single definition, special bar quality steel can be a5776 as steel that moves rotates, twists or bends rather than stays still whilst in use. The main application area for special bar quality steels is the automotive industry for engine, transmission, steering, suspension and hydraulic components Fig 1.

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. Both these terms refer to steel types as well as to bar products, and as they are often associated with the steel grades, they refer to billet and slab as well as bar. The range of carbon content in these steels varies from grade to aastm with minimum of 0. These steels have superior mechanical properties and defect free surface.

Your Alert Profile lists the documents that will be monitored. The specification of SBQ steels may range from plain carbon and carbon manganese steels to alloy and stainless steels containing different percentages of aluminum, satm, chrome and other alloying elements.