4130 Round Bar

4130 round bar alloy is an economical steel alloy, with a wide range of desirable properties

4130 Round Bar

4130 alloy is a chromium-molybdenum alloy steel that has excellent mechanical properties for through hardening.

It provides low carbon content. 4130 steel is most commonly seen as round tube or bar stock in aircraft structures, and is also popular in bicycles, motorcycles, and other sporting goods.

4130 alloy is an economical steel alloy, with a wide range of desirable properties. It is made with chromium-molybdenum steel which has low carbon content, making it an ideal material for larger welded structures. With its optimal combination of strength and toughness, it has been used for a variety of applications in the manufacturing industry.

Why buy 4130 bar?  

4130 steel bar is low-carbon steel with good toughness properties. It is a versatile material that can be used in many applications and has many advantages over other materials.

4130 steel round bar is a type of 4130 steel that has been processed into round bars. It has the same properties as other regular steels, but it’s easier to work with and handle than other regular steels because it’s in round form.

The 4130 steel bar is high-strength, low-alloy steel. It has an alloy content of 0.30% to 0.37%. The bar is typically used in structural applications such as the chassis of a truck or car.

The 4130 steel bar is often used in the automotive industry due to its high strength and low alloy content, which makes it less expensive than other types of steel bars with higher alloy contents like 4340. These properties also make it a great choice for structural applications like truck and car chassis frames, where strength and weight are important considerations.

O'Hare 4130 Bar

O’Hare Precision Metals can provide a wide range of services for either company-supplied or customer-supplied components and materials. Just like how we can offer yo the best 4130 Alloy bar stocks and 4130 Alloy round bar stocks in O’Hare!

4130 Steel Bar Machinability & Welding

It is a high-quality welding steel that may be welded using any commercial technique and machined in its normalized condition. 4130 steel can be cold worked, hot worked, and forged without problem; however, it cannot be aged in any manner.

4130 Steel Bar Applications

It is low-alloy steel, meaning that it has an ideal balance of strength and toughness for use in structural applications. It also has a high fatigue limit, meaning it can be used in applications where it needs to flex without breaking.

4130 steel round bar is the most popular steel for making bicycle frames because of its durability and ability to be formed into many shapes. 4130 bar is a type of steel that is most often used in the manufacturing of automobiles and trucks. The metal has high tensile strength and can also be used for other applications such as making tools and appliances. Also, 4130 round bar is the most popular steel for making bicycle frames.

4130 steel round bar is a type of steel that is used in the production of a variety of products. The 4130 bar is resistant to impact, abrasion, and corrosion. It can withstand extreme temperatures and has good weldability.



Hardness, Brinell: 

Modulus of Elasticity: 

Elongation at Break:

Ultimate Tensile Strength: 

Tensile Yield Strength: 

7.85 g/cm3


29700 ksi


97200 psi

63100 psi

Chemical Properties









Iron 97.03 – 98.22

0.280 – 0.330

0.80 – 1.10



0.15 – 0.30

0.15 – 0.25

0.40 – 0.60

O’Hare’s 4130 Round Bar  

O’Hare Precision Metals is a leading supplier of 4130 bar, 4130 round bar, and other types of steel bar types. They are a one-stop shop for all your metal needs.

The 4130 steel round bar benefits include being more resistant to wear and tear, making it a good choice for these types of machinery. 4130 round bar also has a higher tensile strength than other types of steel, which means it can be used in applications where the material needs to withstand high levels of force.

Do you have questions about 4130 Alloy. Just contact our highly skilled personnel in O’Hare Precision Metals. They are dedicated to providing smooth-flow service.

Request a quote for 4130 Alloy bar stocks and 4130 Alloy round bar stocks now!