In this post I'll talk about SAE 8620. First let's describe it and then have a look at its material's properties.
What is SAE 8620?
SAE 8620 alloy steel is a common, carburizing alloy steel. This alloy steel is flexible during hardening treatments, thus enabling improvement of case/core properties.Application
The SAE 8620 can be used for a number of medium-strength applications such as camshafts, fasteners, gears, and chains/chain pins.UNS Number
G86200Ok let's start with SAE 8620 Chemical Composition.
Chemical Composition
C, Carbon
0.18–0.23Mn, Manganese
0.70–0.90P, Phosphorus max.
0.040S, Sulfur max.
0.040Si, Silicon
0.15–0.35Ni, Nickel
0.40–0.70Cr, Chromium
0.40–0.60Mo, Molybdenum
0.15–0.25Learn more about Chemical Composition.
Now it's the mechanical properties turn:
Yield Strength
360 - 570 MPaLearn more about Yield Strength.
Tensile Strength
520 - 690 MPaLearn more about Tensile Strength.
Elongation (min.)
13 - 31%.Learn more about Elongation.
Hardness
Brinell
150 - 210Learn 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 8620 currently ranks 81 in my yield strength index. This means there are other 80 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 8620 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
AISI 8620 AMS 6274 AMS 6276 AMS 6277 AMS 6375 ASTM A29
ASTM A322 ASTM A331 ASTM A506 ASTM A507 ASTM A513 ASTM A519
ASTM A646 ASTM A752 ASTM A829 MIL S-8690 SAE J1397 SAE J404
AFNOR 20 NCD 2 AFNOR 22 NCD 2 DIN 1.6523 UNI 20 NiCrMo 2 JIS SNCM 21 JIS SNCM 21 H
B.S. 805 H 20 B.S. 805 M 20 AMS 6274G AMS 6276C AMS 6277A ASTM A505
MIL SPEC MIL-S-16974 SAE J404 SAE J770
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