What is ASTM A815?ASTM A815 is a Specification for Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fittings.
CategoryCorrosion-Resisting and Heat-Resisting Steels
ScopeThis specification covers two general classes, WP and CR, of wrought ferritic, ferritic/austenitic, and martensitic stainless steel fittings of seamless and welded construction.
Ok let's start with ASTM A815 chemical composition.
Grade UNS S31803
Ni4.5 - 6.5
Cr21.0 - 23.0
Mo2.5 - 3.5
N0.08 - 0.20
Learn more about chemical composition.
Now it's the mechanical properties turn:
Grade UNS S3180365 ksi (450 MPa) min.
Learn more about what is yield strength.
Grade UNS S3180390 ksi (620 MPa) min.
Learn more about what is tensile strength.
Elongation (min.) 50 mm20.0%.
Learn more about what is elongation.
Reduction of Area (min. %)Not Required.
Learn more about reduction of area.
Grade UNS S31803290 HBW max.
Learn more about what is hardness.
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 A815 currently ranks 33 in my yield strength index. This means there are other 32 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 A815 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
A388/A388M Practice for Ultrasonic Examination of Steel
A751 Test Methods, Practices, and Terminology for Chemical
Analysis of Steel Products
A763 Practices for Detecting Susceptibility to Intergranular
Attack in Ferritic Stainless Steels
A923 Test Methods for Detecting Detrimental Intermetallic
Phase in Duplex Austenitic/Ferritic Stainless Steels
A960/A960M Specification for Common Requirements for
Wrought Steel Piping Fittings
E165 Practice for Liquid Penetrant Examination for General