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4130 Alloy Steel

4130 alloy steel is stronger and more durable than regular steel.

What is 4130 alloy steel?

The 4130 alloy steel is a versatile and robust low-alloy steel that contains chromium and molybdenum as its strengthening agents. With excellent toughness, weldability, and machinability, 4130 steel is a go-to material for forgings in industries such as aerospace, oil, automotive, agricultural, gas, and defense.

To ensure optimal performance, 4130 round bar should be forged within the temperature range of 2250 to 1750°F (1230 to 950°C). This allows for a finer grain structure, enhancing the material’s strength and durability.

After forging, heat treatment is required to prepare the 4130 round bar for machining and to meet specific mechanical property limits for its intended applications. With its exceptional properties, 4130 bar stock is a reliable and widely used material in various industries.

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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

The Advantages of Using 4130 Alloy Steel in Manufacturing and Construction

4130 alloy steel has become a popular material in the manufacturing and construction industries for several reasons. Here are some advantages of using this grade in manufacturing and construction:

  1. High strength-to-weight ratio: 4130 round bar has a high strength-to-weight ratio, making it a preferred choice in industries where weight reduction is essential. This property enables manufacturers to produce lightweight and durable components and structures.

  2. Corrosion resistance: With chromium and molybdenum as strengthening agents, it is resistant to corrosion and oxidation, making it ideal for use in harsh environments. This property reduces maintenance costs and increases the lifespan of the components or structures.

  3. Weldability and machinability: 4130 alloy steel is easy to weld, allowing for the creation of complex structures and components. It is also easy to machine, enabling manufacturers to produce parts with high precision and accuracy.

  4. Cost-effective: Compared to other high-strength alloys, 4130 round bar is relatively cost-effective, making it a popular material in the manufacturing and construction industries.

  5. Versatility: 4130 round bar can be used in a wide range of applications, from structural components to aircraft parts. Its versatility makes it a go-to material for manufacturers who require a material with a broad range of applications.

In conclusion, 4130 alloy steel is a versatile, cost-effective, and durable material that offers several advantages for manufacturers and construction companies. Its excellent strength-to-weight ratio, corrosion resistance, weldability, machinability, and versatility make it a preferred choice in many industries.

4130 Round Bar Stock Ready

Advance Grinding offers a wide range of high-quality steel bars to cater to the diverse needs of businesses and ventures across industries. Our 4130 round bar is the perfect alloy steel metal that offers unique properties that traditional carbon steel cannot provide.

We take pride in providing our clients with exceptional metals that are influenced by thermal treatment and alloying elements during production. Our team is committed to delivering superior quality alloys that meet and exceed the expectations of our clients.

At Advance Grinding, we understand the importance of having reliable, durable, and high-quality metals to accomplish projects successfully. That is why we offer 4130 round bar, a hard material that you can rely on, no matter the size or complexity of your project.

Our experienced professionals are always available to assist you with any queries and provide you with a quote on the alloy you need. We guarantee that our products and services are unmatched in the industry, and we pride ourselves on building strong relationships with our clients based on quality, trust, and integrity.

Choose Advance Grinding Services for your alloy steel needs and experience exceptional customer service, quality products, and competitive pricing. Contact us today to discuss your requirements, and we’ll be happy to assist you in selecting the best metal for your project. Request a quote today!