SAE 12L13 Properties ⚙️ (Chem., Mech. & Rankings) rev. 2021


In this post I'll talk about SAE 12L13. First let's describe it and then have a look at its material's properties.

What is SAE 12L13?

SAE 12L13 is a resulfurized and rephosphorized carbon steel (with added lead) that contains 0.13% carbon (approximately).


Applications include high-speed screw machine products where superior machining characteristics of this steel (from lubricating effects of microscopic lead particles formed in the rolled product) can be fully utilized.

UNS Number


Ok let's start with SAE 12L13 Chemical Composition.

Chemical Composition

C, Carbon

0.13 max

Mn, Manganese


P, Phosphorus max.

0.07 – 0.12

S, Sulfur


Pb, Lead


Learn more about Chemical Composition.

Now it's the mechanical properties turn:

Yield Strength

415 MPa

Learn more about Yield Strength.

Tensile Strength

540 MPa

Learn more about Tensile Strength.

Elongation (min.)


Learn more about Elongation.

Reduction of Area (min. %)


Learn more about Reduction of Area.




Learn more about Hardness.


7.87 g/cm3.

Learn more about Density.

Elastic Modulus

200 GPa.

Learn more about Elastic Modulus.

Poisson's ratio


Learn more about Poisson's ratio.

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 12L13 currently ranks 43 in my yield strength index. This means there are other 42 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 A29 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 12L13 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 A29, SAE J403, JIS SUM 24 L, SAE J412, DIN 1.0718⁣



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 12L13 Properties ⚙️ (Chem., Mech. & Rankings) rev. 2021
SAE 12L13 Properties ⚙️ (Chem., Mech. & Rankings) rev. 2021
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