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4130 Steel Round Bar – The Complete Guide

4130 Steel Round Bar is versatile steel used in many different applications. This guide discusses the basics of 4130 steel. Learn more about this fantastic metal. 

An infographic showing the top 6 importance of a 4130 steel round bar manufacturing

What is 4130 Steel Bar?

A guide for everything you need to know about 4130 round bar, including what it is, its properties, the different types, and grades available, how to buy it, and where to buy it from. It will cover this steel’s history, its advantages and disadvantages, and how to properly cut, bend and weld it.

It is chromium-molybdenum alloy steel, a high-strength, low-alloy steel. 4130 bar stock is a low-carbon, chromium-molybdenum alloy steel with good corrosion resistance, so it is practical for heavy-duty applications such as truck frames and axles.

4130 round bar is a popular and versatile product in the industry with many use cases. For example, it can be helpful to create fuel tanks for trucks or aircraft because of their high strength and resistance to corrosion. It can also apply to building structures because it has good weldability and fatigue resistance.

4130 Steel Bar Applications

4130 steel bar is low-carbon steel with chromium and molybdenum as alloying elements, making it useful in many industries. The chromium-molybdenum alloy provides increased resistance to atmospheric corrosion and general corrosion.

It is famous in structural applications requiring high strength, good formability, and weldability. Some of its most common uses are in frames for racing cars, aircraft landing gear, truck cargo boxes, and automotive frames.

It is famous for its good toughness and excellent wear resistance. Its applications are gears, axles, and shafts. The 4130 steel bar is an alloy of chromium, nickel, and molybdenum. This type of steel is one of the most popular grades for making bars and rods.

The 4130 bar stock has a tensile strength that ranges from 130,000 PSI to 150,000 PSI. The yield strength ranges from 60,000 PSI to 80,000 PSI and hardness is about 27 on the Rockwell scale or RC scale.

4130 Steel Round Bar Manufacturing


4130 steel bar is a wear-resistant alloy used for its toughness and durability. It can withstand wear and tear, making it a good choice for applications needing heavy use. It can be widely popular in many industries, such as agriculture, construction, and transportation.

Moreover, it is a steel alloy that is very popular with heavy machinery and construction equipment manufacturers. 4130 steel round bar is a low-carbon steel that contains 0.29% of carbon. It is a common choice for manufacturing steel structures and other applications that require a high level of weldability, such as brackets, frames, tubing, and general construction materials.

The manufacturing process begins by heating the steel to approximately 1800 degrees Fahrenheit. After that, it is then rolled to create a uniform-thickness coil.

The next step involves converting the coil into a round bar through extrusion. This round bar is then cut into pieces into lengths, which are typically anywhere from 16 inches to 10 feet long.

The 4130 steel round bar manufacturing process also starts with ferrochrome production. Ferrochrome goes through a process into chromium and manganese alloys by adding other materials like silicon and aluminum.

These alloys are then heated in a furnace until they reach 2,450 degrees Fahrenheit (1,350 degrees Celsius). This process causes the metal to melt into liquid form, then pour into molds, which cool down and solidifies.

In Summary: Benefits of Using 4130 Bar Stock

4130 round bar steel is a practical type of steel for producing various items. It has high tensile strength and good fatigue strength, which makes it a good choice for demanding applications that require high performance. A structural column can form this steel, which can withstand heavy loads without buckling or bending.

It provides excellent balance, toughness, and flexibility, making it an ideal candidate for many applications where stiffness, wear, and fatigue resistance are essential features.

Plus, it is a steel type often used to manufacture pipes and tubes. It has a higher yield strength than other types, which means it can withstand more pressure before it bends or breaks. It also has better machinability, meaning a 4130 round bar is more precise in cutting than other types of steel.

Lastly, it is a structural steel that is versatile, strong, and easy to work with. This steel is a structural steel that has been helpful for decades. It has an excellent strength-to-weight ratio and is more corrosion-resistant than other steels.

There is no question that it can be helpful in various applications, from construction to automotive manufacturing. If you need one, you can always depend on O’Hare Precision Metals to get the best 4130 bar stock. Request a quote today!

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Contact Info

O’hare Precision Metals specializes in centerless grinding services and provide precision ground bar materials, focusing high tolerance and offering essential machining services.
O’hare Precision Metals, LLC
2404 W. Hamilton Rd. Arlington Heights, IL 60005
Tel.No. (847) 640-6050
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