4130 Steel

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4130 Steel Round BAr

4130 alloy has a lot of fantastic features. It is a free-machining, high-carbon, heat-treatable metal with moderate corrosion resistance and high hardness.

4130 Steel Round Bar

4130 alloy is chromium-molybdenum alloy steel with low carbon content. It has a density of 7.85 g/cm3 (0.284 lb/in3) and is heat-treated for hardness.

It’s excellent welding steel that can be welded using any commercial process and can be machined in its normalized/tempered state. 4130 steel round bar can be cold worked, hot worked and forged without difficulty, but it cannot be aged. 

It is a through-hardening alloy with high ductility when annealed. 4130 steel bar is primarily used as structural steel and is most commonly seen as a round tube or bar stock in aircraft and construction structures. The best quality 4130 round bar is supplied by Forte Precision Metals.


4130 alloy is a robust metal used in manufacturing, welding, cutting, and other high-stress industrial applications. 4130 steel round bar excellent heat treatment qualities provide a high level of toughness. When paired with its excellent workability and machinability, makes it a versatile material. 4130 round bar has lots of common applications which is why 4130 steel bar stock is in demand. 

If you are one that requires this alloy steel material, Forte Precision Metals guarantees that you will receive the best 4130 Alloy bar stocks and 4130 Alloy round bar stocks that meet your requirements.

4130 Steel Round Bar Commonly Used for;

  • Bearings
  • vehicle parts
  • gears
  • Drill bits 
  • taps
  • Mills 
  • Cutters
  • Rock crushing machinery
  • Resistance welding products

4130 Alloy Properties

Physical Properties

Modulus of Elasticity 

Ultimate Tensile Strength 

Tensile Yield Strength

Rockwell B Hardness 

Elongation at Break 


29700 ksi

97200 psi

63100 psi



4130 Alloy Chemical Elements











97.03 – 98.22

0.80 – 1.10

0.40 – 0.60

0.280 – 0.330

0.15 – 0.30

0.15 – 0.25



4130 Round Bar Applications  

4130 steel bar is a type of round steel bar with a diameter of 3/8 inch and an outside diameter of 1.25 inches. It is used in the construction and manufacturing industries. 4130 round bar benefits are primarily in its corrosion resistance, heat resistance, and strength.4130 round stock can withstand high temperatures up to 1200 degrees Fahrenheit without losing strength or shape. 

This steel bar is a type of steel bar that is used for structural and mechanical purposes. It is made from a high-strength alloy that contains chromium, nickel, molybdenum, and vanadium. Generally, 4130 steel bar has better corrosion resistance than other types of steel bars.

The advantages of using 4130 round bar are that it can be cut easily with a hacksaw or metal saw and will not deform when subjected to high pressures. It also has good ductility, low memory impact, and good fatigue.

4130 steel bar is a type of steel that has an equivalent in hardness to 4130 carbon steel round bar. It is usually used for structural purposes. 4130 steel round bar is a type of steel round bar or rod. It is general-purpose structural steel used in many applications such as machine frames and automobile bodies.

Here are some of the 4130 Round Bar Applications:

– Machine Frames

– Automobile Bodies

– Structural Steel Parts

4130 Round Stock Advantages  

As it is known, the 4130 round bar is a type of steel bar that is commonly used in construction and also in the automotive industry. It is a popular choice for its high strength and corrosion resistance. 4130 steel round bar is a steel bar with a round cross-section. It is made by cold-rolling a rod of 4130 steel bar

 to a diameter of 1.25 inches and then forging the round bar into shape.

4130 round stock advantages:

  • The production cost is lower than that of other steel bars due to less machining required for the production process.

  • The workability of the 4130 steel round bar is good and can be forged, welded, or hot-rolled

  • This round steel bar has excellent corrosion resistance. 4130 round stock has excellent corrosion resistance, making it ideal for use in harsh environments where other materials may corrode or rust.

  • 4130 steel round bar can be produced in both hot rolled and cold rolled shapes.

  • It has good mechanical properties.

  • 4130 Round Bar has an excellent formability

  • Wide range of applications: 4130 round stock can be used to produce bridges, car frames, and aircraft parts with various load capacities.

  • High strength: 4130  steel round bar stock can be used to produce a wide range of products with various load capacities, including bridges, car frames, and aircraft parts.

Forte Precision Metals is here for you if you need an efficient alloy steel round bar supplier and a centerless ground bar supplier who provides you with quality 4130 alloy bar stocks! We work closely with our clients to ensure that their precision ground bars are delivered to the correct specifications.

Get your 4130 Alloy bar stocks and 4spheroid30 Alloy round bar stocks now! Call us or request a quote!https://www.fortemetals.com/products/carbon-steel-round-bar/

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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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