SAE 1045 Properties (Chem., Mech. & Rankings) 2022

 

In this post I'll talk about SAE 1045. First let's describe it and then have a look at its material's properties.

What is SAE 1045?

SAE 1045 steel is characterized by good weldability, good machinability, and high strength and impact properties in either the normalized or hot-rolled condition.

Application

SAE 1045 is widely used for all industrial applications requiring more wear-resistance and strength.

UNS Number

G10450

Ok let's start with SAE 1045 Chemical Composition.

Chemical Composition

C, Carbon

0.43–0.50

Mn, Manganese

0.60–0.90

P, Phosphorus max.

0.040

S, Sulfur max.

0.050

Learn more about Chemical Composition.

Now it's the mechanical properties turn:

Yield Strength

Typical properties

45 ksi, 310 MPa (Hot Rolled). 80 ksi, 552 MPa (Cold Worked). 70 ksi, 483 MPa (Stress Relieved). 35 ksi, 241 MPa (Annealed). 48 ksi, 331 MPa (Normalized)

Learn more about Yield Strength.

Tensile Strength

Typical properties

75 ksi, 517 MPa (Hot Rolled). 90 ksi, 621 MPa (Cold Worked). 80 ksi, 552 MPa (Stress Relieved). 65 ksi, 448 MPa (Annealed). 75 ksi, 517 MPa (Normalized)

Learn more about Tensile Strength.

Elongation (min.) 50 mm typical

15% (Hot Rolled). 5% (Cold Worked). 8% (Stress Relieved). 20% (Annealed). 15% (Normalized).

Learn more about Elongation.

Reduction of Area (min. %)

40 - 51%.

Learn more about Reduction of Area.

Hardness

Typical Rockwell

80 HRB (Hot Rolled). 90 HRB (Cold Worked). 85 HRB (Stress Relieved). 72 HRB (Annealed). 80 HRB (Normalized)

Learn more about Hardness.

Density

7.8 g/cm3.

Learn more about Density.

Elastic Modulus

190 GPa.

Learn more about Elastic Modulus.

Poisson's ratio

0.29.

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 1045 currently ranks 119 in my yield strength index. This means there are other 118 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:

References

ASTM A519 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. SAE 1045 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

⁣
AFNOR XC 42 TS AFNOR XC 45 AFNOR XC 48 AFNOR XC42⁣
DIN 1.1191 JIS S 45C JIS S 48 C SS 1672⁣
ASTM A29 ASTM A510 ASTM A519 ASTM A576⁣
FED QQ-S-635 (C1045) FED QQ-S-700 (1045) SAE J403 ASTM A682⁣
SAE J414 ASTM A183 (2-Nuts) ASTM A236 (1045) SAE J412⁣
ASTM A266 (1045) ASTM A827 ASTM A830 QQ S700 (C1045)⁣
SAE J1397 (1045)⁣