What is ASTM A311?ASTM A311 is a Specification for Cold-Drawn, Stress-Relieved Carbon Steel Bars Subject to Mechanical Property Requirements.
ScopeThis specification covers two classes, nine grades, and four conditions of stress-relieved cold-drawn carbon steel bars produced to mechanical property requirements.
Ok let's start with ASTM A311 chemical composition.
C0.40 - 0.48
Mn1.35 - 1.65
S max.0.24 - 0.33
Learn more about chemical composition.
Now it's the mechanical properties turn:
Grade 114495 ksi (655 MPa) min
Learn more about what is yield strength.
Grade 1144105 ksi (725 MPa) min
Learn more about what is tensile strength.
Elongation (min.) 50 mm0.1.
Learn more about what is elongation.
Reduction of Area (min. %)0.3.
Learn more about reduction of area.
Density7800 - 8000 kg/m3 (around 7.9 g/cm3 or 0.285 lb/in3).
Learn more about density.
Elastic Modulus190 GPa (27557 ksi) - 210GPa (30458 ksi).
Learn more about the Elastic Modulus.
Poisson's Ratio0.27 – 0.30.
Learn more about the poisson ratio.
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 A311 currently ranks 12 in my yield strength index. This means there are other 11 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 A311 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 29 /A 29M Specification for Steel Bars, Carbon and
Alloy, Hot-Wrought and Cold-Finished, General
A 108 Specification for Steel Bar, Carbon and Alloy, Cold-
A 370 Test Methods and Definitions for Mechanical Testing
of Steel Products
E 527 Practice for Numbering Metals and Alloys (UNS)