8620 Steel

8620 Carbon round bar stock is a type of steel that has medium-strength and low-carbon alloy steel.

Top quality 8620 round bar stock for your machinery

8620 Carbon round bar stock is a type of steel that has medium-strength and low-carbon alloy steel. 8620 Carbon bar stock contains good toughness and strength properties and overall good core strength which makes it great for gears, cranks, shafting, axles, bushings, heavy-duty pins. Bolting, springs, hand tools, gears, and a variety of other parts for different machinery. The chemical composition of 8620 carbon bar stock consists of C 0.18-0.23, Cr 0.4-0.6, Fe 96.9-98.02, Mn 0.7-0.9, Mo 0.15- 0.25, Ni 0.4-0.7, P 0.035 max, Si 0.15-0.35, and S 0.04 max; This allows 8620 to meet the following physical properties: Density 0.284lb/in3, ultimate tensile strength 92ksi, yield tensile strength 52ksi, shear strength 59ksi, shear modulus 11.6ksi, hardness rockwell| Brinell B89| 183, elongation at break percentage 26%, reduction of area percentage 60%, Poisson’s ratio 0.29, machinability percentage 65%, melting point 2,580-2,650F, Specific heat 1.14 x 10^-1 BTU/lb-F, and thermal conductivity 323 BTU-in/hr-ft^2-F.

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Get only the best 8620 bar stock in the business

Advance Grinding has the right kind of steel that you need to help you keep up with your business or latest venture. If you want to acquire the best 8620 Carbon round bar stock forged in the industry, then you’ll be happy to know that Advance Grinding can provide you with just that. Our Carbon steel is lightweight, hard-wearing, and heats up fast in an even spread. We understand the value of supplying our clients with quality metal, which is precisely why you should trust us, to supply you with top-tier, high-quality metals. Contact us here at Advance Grinding today, so that you can get a quote on the alloy that you need. We’ll make sure that you’re equipped to take on any project you have to face by providing you with hardy material that you can rely on.


As such, it is now understandable why this type of alloy steel is sought after getting a quick review of its components.

Consequently, its high machinability is highlighted as it is commonly combined with sulfur to further improve its machinability and make carburizing processes more effective.

With its excellent machinability, this even elevated this alloy steel’s prominence among industries.

Fortunately, Advance Grinding Services never runs out of 4140 alloy steel bars and can very much supply your needs especially if you are operating in the Illinois area!



Density 7.7-8.0
Tensile Strength 95000 psi
Yield Strength 60200 psi
Hardness (Brinell) 197
Hardness (Knoop) 219
Hardness (Rockwell) 92
Hardness (Vickers) 207
Machinability 65


With excellent toughness, high fatigue strength, and outstanding machinability, 4140 Alloy Steel has indeed become a staple for most industries in the Midwest.

For the automotive industry, 4140 alloy steel is used in the creation of engine gears, bolts and nuts, and crankshafts while for the oil and gas industry, 4140 alloy steel is utilized in the creation of spindles, couplings, and other mechanical parts.

Whatever industry you are from, rest assured that Advance Grinding Services can provide you with a 4140 alloy steel round bar stock for all your specific industry applications.

Give us a call or simply request a quote from our website and acquire a high-quality 4140 alloy steel round bar stock today!