In this post I'll talk about S21800. First let's describe it and then have a look at its material's properties.
What is S21800?
S21800 is silicon - manganese alloyed austenitic stainless steel. The increased silicon and manganese level inhibit wear, galling and fretting.Application
Valve stems, seats and trim, fastening systems, screening, pins, bushings and roller bearings, pump shafts and rings. Other uses include wear plates, rails guides, and bridge pins.UNS Number
S21800Ok let's start with S21800 Chemical Composition.
Chemical Composition
C, Carbon max.
0.10Mn, Manganese
7.00–9.00P, Phosphorus max.
0.060S, Sulfur max.
0.030Si, Silicon
3.5–4.5Cr, Chromium
16.0–18.0Ni, Nickel
8.0–9.0Learn more about Chemical Composition.
Now it's the mechanical properties turn:
Yield Strength
345 MPaLearn more about Yield Strength.
Tensile Strength
655 MPaLearn more about Tensile Strength.
Elongation (min.)
35 %.Learn more about Elongation.
Hardness
241 HBWLearn more about Hardness.
Density
7.89 g/cm3, 7890 kg/m3.Learn more about Density.
Elastic Modulus
190 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 S21800 currently ranks 12 in my yield strength index. This means there are other 11 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.
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. S21800 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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