4340 Alloy Steel Bar

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4340 Alloy Steel Bar

The 4340 Alloy Steel Bar is a medium carbon, low alloy steel with an excellent mix of strength and malleability.

High Quality 4340 Alloy Steel Bar

4340 is a nickel-chromium-molybdenum alloy steel noted for its toughness and heat-treatment capabilities to achieve high strengths.

It has a high level of fatigue resistance.

This alloy, 4340, can be heat treated to achieve high strength while retaining good toughness, wear resistance, and fatigue strength, as well as powerful corrosion resistance and strength.

4340 Alloy Steel Bar

Here in Forte Precision Metals, we offer outstanding quality 4340 Alloys. We assure you to get the 4340 Alloys bar stocks and 4340 Alloys round bar stocks that fit your needs.

4340 Alloys Commonly Used for;

  • aircraft parts
  • automotive parts and systems
  • gun parts
  • forged hydraulic
  • forged steel crankshafts

4340 Alloys Properties

Physical Properties 


Melting Range 

Specific Heat Capacity 

Electrical Resistivity


7.85 g/cm^3


448 J/kg*K

1.09 µΩ.m

4340 Alloys Chemical Elements











1.65 – 2.0

0.7 – 0.9

0.6 – 0.8

0.38 – 0.43

0.2 – 0.3

0.15 – 0.3



4340 Round Bar Advantages

This type of 4340 alloy steel bar is a common material useful in lots of industries. It is a type of low carbon, medium alloy steel with good ductility. 4340 round bar has a round cross-section, which makes it ideal for use as pipe or tubing. 4340 steel round bar is also used when welding and brazing.

4340 alloy steel bar is a type of steel that can be used in various industries. It has good toughness and strength, which makes it suitable for use in many applications. It is commonly used in the auto industry, aerospace industry, and construction industry. It is also used as a building material for bridges and other structures.

Here are the 4340 steel round bar advantages;

Lots of applications: The 4340 round bar is a type of steel that is widely used in the automotive, construction and machine industries. The 4340 round bar is used in applications such as automotive suspension systems and machine parts.

Good structural Components: A 4340 round bar is a round bar made from low-alloy, high-strength steel. It has good machinability and weldability properties. These bars are often used in the manufacturing of machine tools, aircraft parts, and structural components.

Great Workability: 4340 steel round bar is a kind of alloy steel bar. It is made of high-strength low-alloy steel and chromium. It has a great yield strength that depends on the heat treatment, and it can be hardened easily.

4340 Round Bar Applications  

The use of 4340 steel has been increasing due to its high performance-to-cost ratio.

4340 round bar is a type of round bar that is made from 4340 alloy steel. The most popular use for this type of round bar is for making wheels, shafts, and other automotive parts.

This is a popular material for construction and engineering. It has high strength, ductility, and toughness. It is commonly used in construction as a structural component. It can also be found in bridges, buildings, and industrial machinery.

Forte Precision Metals is here for you if you need an efficient steel round bar supplier and a centerless ground bar supplier who provides you with quality 4340 round bar and 4340 Alloys round bar stocks! We work firmly with our clients to ensure that their precision ground bars are delivered to the correct specifications.

Get your 4340 Alloys bar stocks and 4340 Alloys round bar stocks now! Call us or request a quote!

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Contact info

Forte Precision Metals provide Precision Ground Bars & Centerless Ground services nationally and worldwide
Forte Percision Metals, Inc.
9234 Parklane Ave. Franklin Park, IL 60131
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