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Incredibly strong and tough steel achieved through specialized aging.

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While most distributors might ask for quotes or hesitate to sell alloy steel due to its specific tempers and specifications, don't worry—Online Metals has got you covered.

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Alloy Steel Applications

Alloy steel is a type of steel that is enhanced with specific alloying elements such as chromium, nickel, manganese, or molybdenum, designed to improve its mechanical properties, such as strength, hardness, and corrosion resistance, making it suitable for various demanding applications including automotive parts, industrial machinery, and tools.

We carry a wide variety of alloy steels, including 4130, 4142, 4340, & 9310.

Corrosion-resistant

Excellent Wear Resistance

Enhanced Strength

FAQ

FAQs - Alloy Steel

Alloy steel is used in a variety of industries including construction and energy. You'll find it in tubing, girders, and flanges among other uses. Our alloy steel prices are highly competitive, and you can rest assured that when you buy alloy steel from Online Metals, you're getting high quality and unbeatable service.

What is the difference between Alloy steel and Carbon Steel?

Carbon Steel is traditional steel commonly used for appliances, buildings, bridges, etc. Alloy Steel is steel with additional elements mixed in to create a new steel material with enhanced properties and features. Some of these properties include stronger steel, better corrosion resistance, improved fatigue resistance, etc. The alloy can be chosen to meet the needs of the individual project.

What is Alloy Steel commonly used for?

Alloy steel is used when carbon steel is not strong enough for the requirements of the application.

What is the difference between the different alloys?

Depending on the combination of elements making of the alloy, alloy steel will have different properties for a variety of applications. Here are some of our more frequently used alloys. For a full list of available alloys, view our product guide.

4130 – A more malleable material than carbon steel and easier to bend, this alloy is often used in roll cages. This alloy is Chromoly, stronger than carbon steel and heat treated before use. 4130 is commonly used for gears, fasteners, firearms, and some aircraft exteriors.
4140 –Stronger than carbon steel, yet less malleable than 4130. This alloy is Chromoly and common industrial applications include heavy duty applications, bolts, fixtures, automotive applications, etc.
4340 – This alloy has high strength and better fatigue resistance and strength is retained after being bent. 4340 can be machined and easily and is commonly used in aerospace applications, hydraulic parts, machine tools and more.

How do you weld Alloy Steel?

Depending on the combination of elements making of the alloy, alloy steel will have different properties for a variety of applications. Here are some of our more frequently used alloys. For a full list of available alloys, view our product guide.

There are several different methods to weld alloy steel.

ARC Welding -Often used for maintenance and small production welding.
TIG Welding – Uses non-combustible electrode to initiative arc.
Gas Welding – Uses oxygen-acetylene mixture to provide high temperature flame for welding and brazing.
MIG Welding – Uses an arc between continuous filler metal electrode and the base metal.

Can you weld Alloy Steel to Carbon Steel?

Alloy steel and Carbon Steel can be welded together using the TIG or MIG welding methods. Using a mild steel wire or welding rod as the filler metal is preferred in this process.

What’s the difference between normalized and annealed?

Normalized material is cooled at room temperature, annealed material is cooled at a regulated temperature. Normalized steel has a higher hardness value than annealed.