In this post I'll talk about AISI 444. First let's describe it and then have a look at its material's properties.
What is AISI 444?
AISI 444 is a low carbon, low nitrogen, ferritic stainless steel that provides pitting and crevice corrosion resistance superior to most ferritic stainless steels.Application
Food processing, brewery and wine making equipment, hot-water tanks, heat-exchanger tubing and automotive components.UNS Number
S44400Ok let's start with AISI 444 Chemical Composition.
Chemical Composition
C, Carbon max.
0.025Mn, Manganese max.
1.00P, Phosphorus max.
0.040S, Sulfur max.
0.030Si, Silicon max.
1.00Cr, Chromium
17.5–19.5Ni, Nickel max.
1.00Mo, Molybdenum
1.75–2.50Learn more about Chemical Composition.
Now it's the mechanical properties turn:
Yield Strength
275 MPaLearn more about Yield Strength.
Tensile Strength
415 MPaLearn more about Tensile Strength.
Elongation (min.)
20 %.Learn more about Elongation.
Hardness
217 HBWLearn more about Hardness.
Density
7.7 g/cm3, 7700 kg/m3.Learn more about Density.
Elastic Modulus
200 GPa.Learn more about Elastic Modulus.
Poisson's ratio
0.28.Learn more about Poisson's ratio.
Allowable Stress or Factor of Safety
Depends 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 AISI 444 currently ranks 18 in my yield strength index. This means there are other 17 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.
AISI Classroom
Are you having trouble understanding the basics of AISI?What is AISI: Classification and specification?
This video will walk you through:
References
ASTM A240 and other references.Citation
When 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. AISI 444 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.
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