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9310 Steel

Why 9310 Steel is a Popular Choice for High-Stress Applications

What is 9310 Steel? Understanding the Composition and Properties

9310 steel is a nickel-chrome-molybdenum alloy that possesses exceptional strength and toughness properties. With high hardenability, core hardness, and fatigue strength, it’s no surprise that this alloy is the preferred choice for large cross-sections requiring high toughness and core strength.

One prime example of its application is in crafting gears, crankshafts, and heavy-duty gear shafts for aircraft and truck construction. The chemical composition of 9310 round bar stock includes Carbon (0.08-0.13), Manganese (0.45-0.65 max), Phosphorus (0.025 max), Sulfur (0.025 max), Silicon (0.20-0.35), and Nickel (3.0-3.5).

This high-strength, low-alloy steel is also known for its excellent machinability. The 9310 Steel Bar is popularly available in round shapes, and is widely used in the automotive industry for manufacturing axles. Additionally, it offers good resistance to wear and abrasion, making it the ideal choice for producing gears and shafts.

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Get the Best 9130 9310 Round Bar for Your Projects

At Advance Grinding Services, we have the steel you need to keep up with your business or latest venture. Our 9130 round bar stock is a top-quality chromium-molybdenum alloy steel metal that offers superior forging capabilities, surpassing those of carbon steel.

We take pride in supplying our clients with quality metal, and our alloys are no exception. Both the thermal treatment and the alloying elements used during production greatly influence the quality of our alloys. When you work with us, you can trust that you’re getting top-tier, high-quality metals that are durable and reliable.

Contact us today for a quote on the alloy you need, and we’ll make sure you’re equipped to tackle any project with a hard material you can rely on. With Advance Grinding, you can rest assured that you have access to the best metals in the industry to help bring your projects to fruition.


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

9310 Round Bar Uses And Applications

The 9310 round bar is a high-strength, low-alloy steel widely used in various applications across different industries. Its unique properties make it a popular choice for applications that require high toughness, core strength, and resistance to wear and abrasion.

One of the primary applications of the 9310 round bar is manufacturing gears, crankshafts, and heavy-duty gear shafts for aircraft and truck construction. Its exceptional fatigue strength and high hardenability make it ideal for these applications.

The automotive industry also extensively uses 9310 round bars for manufacturing axles. Its high strength and machinability make it a popular choice for this application, providing a reliable and durable solution for heavy-duty vehicles.

In addition to these applications, the 9310 round bar is used to manufacture transmission gears, engine parts, and other critical components in various industries such as aerospace, defense, and oil and gas.

Whatever industry you are from, rest assured that Advance Grinding Services can provide you with a 9310 steel bar stock for all your specific industry applications. Give us a call or simply request a quote from our website and acquire high-quality bars today!