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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Sulphur content in the 15 grades of the resulfurized steels also have different ranges of sulfur with a minimum of 0. A guide for the selection of steel bars is contained in Practice A Already Subscribed to this document. 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

You may delete a document from your Alert Profile at any time. The term aztm used to describe steel long products for more demanding processing or end-use applications which cannot be met by merchant quality grades. Internal metallurgical quality and consistency is also achieved by a meaningful reduction during the rolling process. The products may also include hot rolled steel bars, cold finished steel bars. This standard is not included in any packages. Both these q576 refer to steel types as well as to asrm products, and as they are often associated with the steel grades, they refer to billet and slab as well as bar.


Need more than one copy? Please first verify your email before subscribing to alerts. Designed by Elegant Themes Powered by WordPress. These steels are produced both in cut lengths and coils. Special bar quality SBQ steels represents a wide variety of higher quality carbon and alloy steels.

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

We have no amendments or corrections for this standard. The petroleum industry uses them to produce valves and pipeline couplings for oil extraction.

Pipe billet. Trade House BMZ JSC

ASTM standard 9b0 b covers specification for plain carbon special quality bar steels for applications which includes forging, heat treating, cold drawing, machining and many structural uses.

These steels are produced with more precise dimensions and chemistry. If the document is revised or amended, you will be notified by email.

The main application area for special bar quality steels is the automotive industry for engine, transmission, steering, suspension and hydraulic components Fig 1. SBQ steels are used in safety critical applications. These steels are generally machined, forged or cold drawn during subsequent processing.

Quality SAE 1018 Chemical composition Temperature °C

Some end uses of these steels may require superior surface quality, or special chemical restrictions, metallurgical characteristics, heat treatment s576 surface finishes. SBQ steels are used for bolts, springs, cable wires, chains, tyre beads and many similar applications in automotive industry.

Although there is no single definition, special bar quality steel can be defined as steel that moves rotates, twists or bends rather than stays still whilst in use. Steel cleanliness can be achieved through zstm integrated route or through an additional refining step and cleaner iron bearing inputs into an EAF in a mini mill.


Donate Grateful for your donation! The chemistry of these steels is more complex than merchant quality steels. 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.

Fig 1 Some of the uses of SBQ steels in automotive industry. Proceed to Checkout Continue Shopping.

In order to achieve metallurgical quality, the steel has to be particularly clean. You can download and open this file to your own computer but A5576 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. Your email address will not be published.

ASTM A – 90b() Standard Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality

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Special bar quality steel may have products of shapes which can be classified into round, square and hexagonal bars.