What is ASTM A722?ASTM A722 is a Specification for Uncoated High-Strength Steel Bars for Prestressing Concrete
ScopeThis specification covers uncoated high-strength steel bars intended for use in pretensioned and post-tensioned prestressed concrete construction or in prestressed ground anchors.
Ok let's start with ASTM A722 chemical composition.
Learn more about chemical composition.
Now it's the mechanical properties turn:
The minimum yield strength of Type I and Type II bars shall be 85 % and 80 %, respectively, of the minimum ultimate tensile strength of the bars
Learn more about what is yield strength.
Finished bars1035 MPa (150 000 psi) min.
Learn more about what is tensile strength.
Allowable StressDepends on the project (And its factor of safety).
Learn more about the what is allowable stress.
My Material's RankWhile engineers will often look for the cheapest material they can use, I took a different approach to material's selection to help newbie students.
I ranked materials according to their yield strengths and ASTM A722 currently ranks 167 in my yield strength index. This means there are other 166 materials that are more resistant.
Note: I've analysed 134 materials in order to create an yield strength index. Check my astm material's comparison post for more details.
ASTM ClassroomAre you having trouble understanding the basics of ASTM?
What is the difference between Code, Standard & Specification?
This video will walk you through:
CitationWhen you need to include a fact or piece of information in an assignment or essay you should also include where and how you found that piece of information.
That gives credibility to your paper and it is sometimes required in higher education.
To make your life (and citation) easier just copy & paste the information below into your assignment or essay:
Luz, Gelson. ASTM A722 Properties (Chem., Mech. & Rankings). Materials Blog. Gelsonluz.com. dd mmmm. yyyy. <URL>
Now replace dd, mmmm and yyyy with the day, month, and year you browsed this page. Also replace URL for the actual url of this page (The < and > stay, ok?). This citation format is based on MLA.
Other ReferencesA 370 Test Methods and Definitions for Mechanical Testing
of Steel Products2
A 700 Practices for Packaging, Marking, and Loading
Methods for Steel Products for Domestic Shipment3
E 30 Test Methods for Chemical Analysis of Steel, Cast
Iron, Open-Hearth Iron, and Wrought Iron