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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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.

These steels are produced with more precise dimensions and chemistry. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.

Designed by Elegant Themes Powered by WordPress. Internal metallurgical quality and consistency is also achieved by a meaningful a56 during the rolling process. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Sulphur content in the 15 grades of the resulfurized steels also have different ranges of sulfur with a minimum of 0. SBQ steels are used for bolts, springs, cable wires, chains, tyre beads and many similar applications in automotive industry.

This standard is not included in any packages. These steels are also used for a wide range of industrial applications. Standards Subsctiption may be the perfect solution. SBQ steels are used for wind turbine components, bearings and seamless tubes. 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.


Subscription pricing is determined by: 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.

SBQ steels are used in safety critical applications. These steels are generally machined, forged or cold drawn during subsequent processing.

Pipe billet

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. In the hand tools sector, they are used for hammers, screwdrivers and wrenches, among others.

Donate Grateful for your donation! 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 chemistry of these steels is more complex than merchant quality steels. These steels are produced both in cut lengths and coils.

The petroleum industry uses them to produce valves and pipeline couplings for oil extraction. Posted by Satyendra on May 27, in Ispat Digest 0 comments.

These steels may have many grades. Most producers see ties to the automotive industry as the key drivers of the SBQ steel grades. The products may also include hot rolled steel bars, cold finished steel bars.

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.

Pipe billet. Trade House BMZ JSC

Special bar quality SBQ steels represents a wide variety of higher quality carbon and alloy steels. Add to Alert PDF. We have no amendments or corrections for this standard. If the document is asrm or amended, you will be notified by email. Leave a Reply Cancel reply Your email address will not be published.


You may delete a document from your Alert Profile at any time. This makes the production route of these steels a bit complex. This standard is also available to be included in Standards Subscriptions.

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. The range of carbon content in these steels varies from grade to grade with minimum of 0. 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.

The main application area for special bar quality steels is the automotive industry for engine, transmission, steering, suspension and hydraulic components Fig 1. Need more than one copy? Please first log in with a verified email before subscribing to alerts. s576

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

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. Already Subscribed to this document. Please first verify your email before subscribing to alerts.