What is ASTM A202?ASTM A202 is a Specification for Pressure Vessel Plates, Alloy Steel, Chromium-Manganese-Silicon.
CategorySteel Plates, Sheets, and Strip for Pressure Vessels
ScopeThis specification covers chromium-manganese silicon alloy steel plates, intended particularly for welded boilers and other pressure vessels.
Ok let's start with ASTM A202 chemical composition.
Mn1.05 - 1.40
Si0.60 - 0.90
Cr0.35 - 0.60
Learn more about chemical composition.
Now it's the mechanical properties turn:
Grade A45 ksi (310 MPa) min
Learn more about what is yield strength.
Grade A75 - 95 ksi (515 - 655 MPa)
Learn more about what is tensile strength.
Elongation (min.) 50 mm0.19.
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 A202 currently ranks 56 in my yield strength index. This means there are other 55 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 A202 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 20/A 20M Specification for General Requirements for
Steel Plates for Pressure Vessels
A 31 Specification for Steel Rivets and Bars for Rivets,
A 435/A 435M Specification for Straight-Beam Ultrasonic
Examination of Steel Plates
A 577/A 577M Specification for Ultrasonic Angle-Beam
Examination of Steel Plates
A 578/A 578M Specification for Straight-Beam Ultrasonic
Examination of Plain and Clad Steel Plates for Special