S31254 Properties (Chem., Mech. & Rankings) 2022

 

In this post I'll talk about S31254. First let's describe it and then have a look at its material's properties.

What is S31254?

This is a high corrosion resistant austenitic stainless steel with a high nickel, high chromium, high molybdenum alloy design, and provides excellent corrosion resistance in severe corrosion environments such as high temperature seawater.

Application

Marine structures, seawater desalination systems, heat exchangers using seawater, condenser tubes, etc. Various types of bleaching systems, scrubbers, etc. Centrifugal separators, reaction tanks, etc.

UNS Number

S31254

Ok let's start with S31254 Chemical Composition.

Chemical Composition

C, Carbon max.

0.020

Mn, Manganese max.

1.00

P, Phosphorus max.

0.030

S, Sulfur max.

0.010

Si, Silicon max.

0.80

Cr, Chromium

19.5–20.5

Ni, Nickel

17.5–18.5

Mo, Molybdenum

6.0–6.5

Learn more about Chemical Composition.

Now it's the mechanical properties turn:

Yield Strength

310 MPa

Learn more about Yield Strength.

Tensile Strength

690 MPa

Learn more about Tensile Strength.

Elongation (min.)

35 %.

Learn more about Elongation.

Hardness

223 HBW

Learn more about Hardness.

Density

8.0 g/cm3, 8000 kg/m3.

Learn more about Density.

Elastic Modulus

195 GPa.

Learn more about Elastic Modulus.

Poisson's ratio

0.30.

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 S31254 currently ranks 15 in my yield strength index. This means there are other 14 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. S31254 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.

Equivalent Specifications

SAE S31254