SAE 1021 Properties (Chem., Mech. & Rankings) rev. 2021


In this post I'll talk about SAE 1021. First let's describe it and then have a look at its material's properties.

What is SAE 1021?

SAE 1021 carbon steel is a low carbon steel with 0.21% carbon content, approximately.


SAE 1021 carbon steel is mostly used in extruding and cold heading processes.

UNS Number


Ok let's start with SAE 1021 Chemical Composition.

Chemical Composition

C, Carbon


Mn, Manganese


P, Phosphorus max.


S, Sulfur max.


Learn more about Chemical Composition.

Now it's the mechanical properties turn:

Yield Strength

260 - 450 MPa

Learn more about Yield Strength.

Tensile Strength

480 - 530 MPa

Learn more about Tensile Strength.

Elongation (min.)

17 - 27%.

Learn more about Elongation.

Reduction of Area (min. %)

46 - 54%.

Learn more about Reduction of Area.



130 - 150

Learn more about Hardness.


7.9 g/cm3.

Learn more about Density.

Elastic Modulus

190 GPa.

Learn more about Elastic Modulus.

Poisson's ratio


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.

My Material's Ranking Research

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 SAE 1021 currently ranks 140 in my yield strength index. This means there are other 139 materials that are more resistant.

Note: I've analysed 162 materials in order to create an yield strength index. Check my material's comparison post for more details.

SAE Classroom

Are you having trouble understanding the basics of SAE?

What is SAE: Classification and specification?

This video will walk you through:


ASTM A519 and other references.


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. SAE 1021 Properties (Chem., Mech. & Rankings). Materials Blog. 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 A545 ASTM A548 ASTM A576 ASTM A635⁣
ASTM A794 ASTM A830 SAE J1397 SAE J403⁣
ASTM A519 SAE J414 SAE J412 ASTM A659⁣



Hi, I'm Gelson Luz.

I'm a Mechanical Engineer, expert in Welding and passionate about:

Materials, technology and dogs.

I'm building this blog to be the ultimate engineering learning blog!

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Materials: SAE 1021 Properties (Chem., Mech. & Rankings) rev. 2021
SAE 1021 Properties (Chem., Mech. & Rankings) rev. 2021
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