AISI 409 Properties (Chem., Mech. & Rankings) 2022

In this post I'll talk about AISI 409. First let's describe it and then have a look at its material's properties.

What is AISI 409?

AISI 409 is a ferritic steel that offers good mechanical properties and high-temperature corrosion resistance.

Application

Automotive exhaust tubing. Catalytic converter systems. Mufflers.

UNS Number

S40910

Ok let's start with AISI 409 Chemical Composition.

Chemical Composition

C, Carbon max.

0.030

Mn, Manganese max.

1.00

P, Phosphorus max.

0.040

S, Sulfur max.

0.020

Si, Silicon max.

1.00

Cr, Chromium

10.5–11.7

Ni, Nickel max.

0.50

Learn more about Chemical Composition.

Now it's the mechanical properties turn:

Yield Strength

170 MPa

Learn more about Yield Strength.

Tensile Strength

380 MPa

Learn more about Tensile Strength.

Elongation (min.)

20 %.

Learn more about Elongation.

Hardness

179 HBW

Learn more about Hardness.

Density

7.8 g/cm3, 7800 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 AISI 409 currently ranks 77 in my yield strength index. This means there are other 76 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 409 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

ASTM A1010 Grade 40 ASTM A1010 Grade 50In this post I'll talk about AISI 410. First let's describe it and then have a look at its material's properties.