What Is Case-Hardened Steel?

The metal manufacturing industry includes a few key terms and processes. Case hardening in Gastonia, NC is one of these. If you’re not familiar with case-hardened steel, use the following FAQ to learn an overview of this industry staple.

If your question isn’t on the list, feel free to reach out to the experts at J.F. Heat Treating Inc. Our experienced technicians can provide any additional information you need. We’re always here to help.

What is case-hardened steel?

Case hardening in Gastonia, NC involves infusing elements onto a metal surface. This creates a thin layer on the surface. This harder alloy or metal on the surface surrounds the core, creating a case. Once this process is complete, the steel is referred to as “case-hardened.” Due to the alloy on the surface, it is now harder, or stronger, than it was previously.

What are the properties of case-hardened steel?

Because case-hardened steel maintains its original properties at its core, it offers extra durability. The tough case can withstand abrasion, corrosion and wear, while the core can absorb shock.

What are the advantages of case-hardened steel?

If a product is not case hardened, it is not as durable. It may suffer from cracks below the surface. This can lead to flaking and pitting. By applying case hardening in Gastonia, NC to a metal, technicians can create a component that is much stronger and more durable than it would be without this process.

What is the process for case hardening?

First, the technician heats the metal. Then, an element is infused onto the heated metal. Next, the metal is quenched. The heating process can be accomplished via flame, electromagnetic induction or vacuum chamber.

Are there different types of case hardening?

Yes. Several elements can be used for case hardening. Each method is named after the element used in the process. Nitriding involves ammonia or other nitrogen-rich gases. Cyaniding involves nitrogen and carbon. Carburizing involves carbon. The carbon content of the metal being hardened helps determine which case hardening method is used.

Is case hardening the same as surface hardening?

No. These processes are different. Surface hardening requires keeping the core below its austenitizing temperature while the surface is heated. The metal is then quenched. In this instance, the core remains soft while the surface hardens. No additional material is added to the metal to create a “case.”

Where can I learn more about case hardening?

Case hardening in Gastonia, NC requires technical knowledge of metal properties, heating processes, metal manufacturing and metal products. Only a trained technician has the knowledge and skills to perform this method. To reach experienced professionals who can provide additional information about case hardening, contact a metal heat treating service provider.

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The experienced professionals at J.F. Heat Treating Inc. offer in-depth knowledge of heat-treating services. Our team specializes in the hardening and carbonizing of various steel products. We work with manufacturers and fabricators to deliver the best products and services available. For more information on case hardening or any other related topics, feel free to give us a call today!

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