What is ASTM A479?ASTM A479 is a Specification for Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels.
CategoryCorrosion-Resisting and Heat-Resisting Steels
ScopeThis specification covers hot and cold-finished bars of stainless steel, including rounds, squares, and hexagons, and hot-rolled or extruded shapes such as angles, tees, and channels for use in boiler and pressure vessel construction.
Ok let's start with ASTM A479 chemical composition.
Cr16.0 - 18.0
Ni10.0 - 14.0
Mo2.00 - 3.00
Learn more about chemical composition.
Now it's the mechanical properties turn:
Type 31665 ksi (450 MPa) min.
Learn more about what is yield strength.
Type 31685 ksi (585 MPa) min.
Learn more about what is tensile strength.
Elongation (min.) 50 mm0.3.
Learn more about what is elongation.
Reduction of Area (min. %)0.6.
Learn more about reduction of area.
Density7480 - 8000 kg/m3 (around 7.9 g/cm3 or 0.285 lb/in3).
Learn more about density.
Elastic Modulus180 GPa (26107 ksi) - 210GPa (30458 ksi).
Learn more about the Elastic Modulus.
Poisson's RatioUsually around 0.26 – 0.31.
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 A479 currently ranks 30 in my yield strength index. This means there are other 29 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 A479 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 ReferencesA262 Practices for Detecting Susceptibility to Intergranular
Attack in Austenitic Stainless Steels
A370 Test Methods and Definitions for Mechanical Testing
of Steel Products
A484/A484M Specification for General Requirements for
Stainless Steel Bars, Billets, and Forgings
A751 Test Methods, Practices, and Terminology for Chemical
Analysis of Steel Products
E112 Test Methods for Determining Average Grain Size
E527 Practice for Numbering Metals and Alloys in the
Unified Numbering System (UNS)