AISI 446 Properties⚙️ (Chem., Mech. & Rankings) rev. 2022

 

In this post I'll talk about AISI 446. First let's describe it and then have a look at its material's properties.

What is AISI 446?

AISI 446 is a heat resistant ferritic chromium stainless steel with aluminum in addition. It is resistant to oxidizing sulphuric gases and scaling up to 1150°C.

Application

Steam generator.

UNS Number

S44600

Ok let's start with AISI 446 Chemical Composition.

Chemical Composition

C, Carbon max.

0.20

Mn, Manganese max.

1.50

P, Phosphorus max.

0.040

S, Sulfur max.

0.030

Si, Silicon max.

1.00

Cr, Chromium

23.0–27.0

Ni, Nickel max.

0.75

Learn more about Chemical Composition.

Now it's the mechanical properties turn:

Yield Strength

275 MPa

Learn more about Yield Strength.

Tensile Strength

515 MPa

Learn more about Tensile Strength.

Elongation (min.)

20 %.

Learn more about Elongation.

Hardness

217 HBW

Learn 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

0.27.

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 446 currently ranks 19 in my yield strength index. This means there are other 18 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 446 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

AISI 446 ASTM A176 ASTM A268 ASTM A276 ASTM A314 ASTM A473 ASTM A511 ASTM A815 DIN 1.4762 ASME SA268 ASTM A580 SAE J405 (51446)