What is ASTM A270?ASTM A270 is a Specification for Seamless and Welded Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubing
ScopeThis specification covers grades of seamless, welded, and heavily cold worked welded austenitic and ferritic/ austenitic stainless steel sanitary tubing intended for use in the dairy and food industry and having special surface finishes. Pharmaceutical quality may be requested, as a supplementary requirement.
Ok let's start with ASTM A270 chemical composition.
Grade TP 316L
Ni10.0 - 14.0
Cr16.0 - 18.0
Mo2.00 - 3.00
Learn more about chemical composition.
Now it's the mechanical properties turn:
Grade TP 316L25 ksi (170 MPa) min. Non mandatory
Learn more about what is yield strength.
Grade TP 316L70 ksi (485 MPa) min. Non mandatory
Learn more about what is tensile strength.
Grade TP 316L90 HRB 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 A270 currently ranks 132 in my yield strength index. This means there are other 131 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 A270 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 262 Practices for Detecting Susceptibility to Intergranular
Attack in Austenitic Stainless Steels
A 480/A 480M Specification for General Requirements for
Flat-Rolled Stainless and Heat-Resisting Steel Plate,
Sheet, and Strip
A 923 Test Methods for Detecting Detrimental Intermetallic
Phase in Wrought Duplex Austenitic/Ferritic Stainless
A 967 Specification for Chemical Passivation Treatments
for Stainless Steel Parts
A 1016/A 1016M Specification for General Requirements
for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless
E 527 Practice for Numbering Metals and Alloys (UNS)