In this post I'll talk about SAE 4337. First let's describe it and then have a look at its material's properties.
What is SAE 4337?SAE 4337 is a nickel-chromium-molybdenum steel with, approximately, 0.37% carbon.
ApplicationCommercial and military aircraft, automotive systems, forged hydraulic and other machine tool applications, forged crankshafts.
Ok let's start with SAE 4337 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 Strength965 MPa
Learn more about Yield Strength.
Tensile Strength1448 MPa
Learn more about Tensile Strength.
Learn more about Elongation.
Learn more about Hardness.
Learn more about Density.
Elastic Modulus201 - 209 GPa.
Learn more about Elastic Modulus.
Poisson's ratio0.27 - 0.30.
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 4337 currently ranks 3 in my yield strength index. This means there are other 2 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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