In this post I'll talk about SAE 4320. First let's describe it and then have a look at its material's properties.
What is SAE 4320?SAE 4320 alloy steel has high toughness and strength. It contains low carbon content to achieve good welding characteristics.
ApplicationThis alloy is used in the manufacture of forged gears and pinions and other heavy-duty machinery components.
Ok let's start with SAE 4320 Chemical Composition.
P, Phosphorus max.0.040
S, Sulfur max.0.040
Learn more about Chemical Composition.
Now it's the mechanical properties turn:
Yield Strength430 - 460 MPa
Learn more about Yield Strength.
Tensile Strength570 - 790 MPa
Learn more about Tensile Strength.
Elongation (min.)21 - 29%.
Learn more about Elongation.
Brinell160 - 240
Learn more about Hardness.
Learn more about Density.
Elastic Modulus190 GPa.
Learn more about Elastic Modulus.
Learn more about Poisson's ratio.
Allowable Stress or Factor of SafetyDepends on the project (And its factor of safety).
Learn more about Allowable Stress or Factor of Safety.
My Material's Ranking ResearchWhile 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 4320 currently ranks 37 in my yield strength index. This means there are other 36 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 ClassroomAre you having trouble understanding the basics of SAE?
What is SAE: Classification and specification?
This video will walk you through:
ReferencesASTM A519 and other references.
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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 4320 Properties (Chem., Mech. & Rankings). Materials Blog. Gelsonluz.com. dd mmmm. yyyy. URL
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Equivalent SpecificationsASTM A29 (4320)
ASTM A322 (4320)
ASTM A331 (4320)
ASTM A519 (4320)
ASTM A535 (4320)
ASTM A752 (4320)
SAE J1397 (4320)
SAE J404 (4320)
SAE J412 (4320)