In this post I'll talk about XM-21. First let's describe it and then have a look at its material's properties.
What is XM-21?XM-21 (or 304HN) is high nitrogen 304 stainless steel.
ApplicationAircraft and aerospace components, marine components, high temperature components, pressure vessels, pump components, welded tubing, forged fittings, pipe flanges, and valves.
Ok let's start with XM-21 Chemical Composition.
C, Carbon max.0.08
Mn, Manganese max.2.00
P, Phosphorus max.0.045
S, Sulfur max.0.030
Si, Silicon max.0.75
Learn more about Chemical Composition.
Now it's the mechanical properties turn:
Yield Strength345 MPa
Learn more about Yield Strength.
Tensile Strength620 MPa
Learn more about Tensile Strength.
Elongation (min.)30 %.
Learn more about Elongation.
Learn more about Hardness.
Density7.8 g/cm3, 7800 kg/m3.
Learn more about Density.
Elastic Modulus200 GPa.
Learn more about Elastic Modulus.
Learn more about Poisson's ratio.
Allowable Stress or Factor of SafetyDepends on the project (And its factor of safety).
Learn more about Allowable Stress or Factor of Safety.
AISI Ranking Research (Stainless Steel)While 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 XM-21 currently ranks 13 in my yield strength index. This means there are other 12 materials that are more resistant.
Note: I've analysed 77 materials in order to create an yield strength index. Check my material's comparison post for more details.
ReferencesASTM A240 and other references.
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 and paste the information below into your assignment or essay:
Luz, Gelson. XM-21 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. This citation format is based on MLA.