In this post I'll talk about SAE 81B45. First let's describe it and then have a look at its material's properties.
What is SAE 81B45?
SAE 81B45 is a nickel-chromium-molybdenum steel (with added boron) that contains 0.45% carbon, approximately.Application
They are used in seamless mechanical tubing.UNS Number
G81451Ok let's start with SAE 81B45 Chemical Composition.
Chemical Composition
C, Carbon
0.43–0.48Mn, Manganese
0.75–1.00P, Phosphorus max.
0.040S, Sulfur max.
0.040Si, Silicon
0.15–0.35Ni, Nickel
0.20–0.40Cr, Chromium
0.35–0.55Mo, Molybdenum
0.08–0.15Learn more about Chemical Composition.
Now it's the mechanical properties turn:
Yield Strength
350 - 560 MPaLearn more about Yield Strength.
Tensile Strength
540 - 670 MPaLearn more about Tensile Strength.
Elongation (min.)
12 - 24%.Learn more about Elongation.
Hardness
Brinell
160 - 200Learn 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.
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 81B45 currently ranks 94 in my yield strength index. This means there are other 93 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 81B45 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.
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