SAE 1020 Properties ⚙️ (Chem., Mech. & Rankings) rev. 2022


In this post I'll talk about SAE 1020. First let's describe it and then have a look at its material's properties.

What is SAE 1020?

SAE 1020 carbon steel is a commonly used plain carbon steel. It has a good combination of strength and ductility and can be hardened or carburized.


SAE 1020 carbon steel is used for simple structural applications such as cold headed bolts.

UNS Number


Ok let's start with SAE 1020 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

Typical properties

32 ksi, 221 MPa (Hot Rolled). 60 ksi, 414 MPa (Cold Worked). 50 ksi, 345 MPa (Stress Relieved). 28 ksi, 193 MPa (Annealed). 34 ksi, 234 MPa (Normalized)

Learn more about Yield Strength.

Tensile Strength

Typical properties

50 ksi, 345 MPa (Hot Rolled). 70 ksi, 483 MPa (Cold Worked). 65 ksi, 448 MPa (Stress Relieved). 48 ksi, 331 MPa (Annealed). 55 ksi, 379 MPa (Normalized)

Learn more about Tensile Strength.

Elongation (min.) 50 mm typical

25% (Hot Rolled). 5% (Cold Worked). 10% (Stress Relieved). 30% (Annealed). 22% (Normalized).

Learn more about Elongation.

Reduction of Area (min. %)

45 - 57%.

Learn more about Reduction of Area.


Typical Rockwell

55 HRB (Hot Rolled). 75 HRB (Cold Worked). 72 HRB (Stress Relieved). 50 HRB (Annealed). 60 HRB (Normalized)

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 1020 currently ranks 155 in my yield strength index. This means there are other 154 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 1020 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

AMS 5054 AMS 5045C SAE J1397 ASTM A513 (MT 1020) ASTM A512 (1020, MT 1020)⁣
AMS 5045 AMS 5032B SAE J412 ⁣
AFNOR CC 20 AMS 5032 SAE J403 MIL S-11310 (CS 1020) ASTM A29⁣
SS 1450 AMS 5046 SAE J414 ASTM A830 MIL S-7952⁣
DIN 1.0402 B.S. 070 M 20 ASTM A635 ASTM A787 (MT 1020) MIL S-16788⁣
UNI C 20 B.S. 040 A 20 ASTM A827 ASTM A794 ASTM A108⁣
MIL T-3520 ASTM A510 ASTM A519 ASTM A544 ASTM A575⁣
ASTM A576⁣
ASTM A659⁣


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Materials: SAE 1020 Properties ⚙️ (Chem., Mech. & Rankings) rev. 2022
SAE 1020 Properties ⚙️ (Chem., Mech. & Rankings) rev. 2022
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