What is ASTM A249?ASTM A249 is a Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes.
CategoryCorrosion-Resisting and Heat-Resisting Steels
ScopeThis specification covers nominal-wall-thickness welded tubes and heavily cold worked welded tubes made from austenitic steels, with various grades intended for such use as boiler, superheater, heat exchanger, or condenser tubes.
Ok let's start with ASTM A249 chemical composition.
Cr18.0 - 20.0
Ni8.0 - 12.0
Learn more about chemical composition.
Now it's the mechanical properties turn:
Grade TP304l30 ksi (205 MPa) min
Learn more about what is yield strength.
Grade TP304l75 (515 MPa) min
Learn more about what is tensile strength.
Elongation (min.) 50 mm0.35.
Learn more about what is elongation.
Reduction of Area (min. %)Not Required.
Learn more about reduction of area.
Grade TP304l90 HRB max
Learn more about what is hardness.
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 A249 currently ranks 109 in my yield strength index. This means there are other 108 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 A249 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
A480/A480M Specification for General Requirements for
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
Sheet, and Strip
A1016/A1016M Specification for General Requirements for
Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
E112 Test Methods for Determining Average Grain Size
E213 Practice for Ultrasonic Testing of Metal Pipe and
E273 Practice for Ultrasonic Testing of the Weld Zone of
Welded Pipe and Tubing
E527 Practice for Numbering Metals and Alloys in the
Unified Numbering System (UNS)