What is ASTM A178?ASTM A178 is a Specification for Electric-Resistance-Welded Carbon Steel and Carbon-Manganese Steel Boiler and Superheater Tubes.
ScopeThis specification covers minimum-wall-thickness, electric-resistance-welded tubes made of carbon steel and carbon-manganese steel intended for use as boiler tubes, boiler flues, superheater flues, and safe ends.
Ok let's start with ASTM A178 chemical composition.
C0.06 - 0.18
Mn0.27 - 0.63
Learn more about chemical composition.
Now it's the mechanical properties turn:
Grade C37 ksi (255 MPa) min
Learn more about what is yield strength.
Grade C60 ksi (415 MPa) min
Learn more about what is tensile strength.
Elongation (min.) Grade C 50 mm0.3.
Learn more about what is elongation.
Reduction of Area (min. %)Not Required.
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 A178 currently ranks 77 in my yield strength index. This means there are other 76 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 A178 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 226/A 226M Specification for Electric-Resistance-
Welded Carbon Steel Boiler and Superheater Tubes for
A 450/A 450M Specification for General Requirements
for Carbon, Ferritic Alloy, and Austenitic Alloy Steel
A 520 Specification for Supplementary Requirements for
Seamless and Electric-Resistance-Welded Carbon Steel
Tubular Products for High-Temperature Service Conforming
to ISO Recommendations for Boiler Construction.
E 213 Practice for Ultrasonic Examination of Metal Pipe
E 273 Practice for Ultrasonic Examination of Longitudinal
Welded Pipe and Tubing