ThePipingMart Blog Metals How to Machine Hardened Steel – An Overview

How to Machine Hardened Steel – An Overview

How to Machine Hardened Steel

Hardened steel is a type of metal that has gone through a process known as hardening. The process involves heating the metal and then rapidly cooling it down to create a very strong material that is resistant to wear, corrosion, and impact. It’s an essential material for many industrial applications, but it can be tricky to work with. Here’s what you need to know about machining hardened steel.

What Is Hardening?

Hardening is the process of heating a piece of metal up until it reaches its critical temperature—the temperature at which its crystalline structure changes—and then rapidly cooling it. This change in structure makes the metal harder and more resistant to impacts, wear, and corrosion. In some cases, however, it can make the metal more brittle because its grains become smaller during the hardening process.

How To Machine Hardened Steel?

Machining hardened steel requires special equipment and techniques. Generally speaking, you’ll want to use a machine tool with high torque and low-speed settings so as not to damage the material. You should also use carbide-tipped tools whenever possible since carbide can stand up better against heat generated by machining hardened steel. Additionally, you should take care not to apply too much pressure on your tool or move it too quickly while machining, or you risk damaging or distorting the piece of hardened steel you’re working on.

Furthermore, if you’re machining hardened steel with internal features such as holes or slots, you need to be mindful of chip buildup, as this can cause problems with accuracy and surface finish quality. To prevent this from happening, use slower speeds than usual when drilling holes or milling slots into hardened steel pieces—this will give chips enough time to dissipate before they get stuck in any internal features.


As you can see, there are many factors involved in machining hardened steel successfully—from choosing the right machine tool settings to using proper techniques during machining operations. With the right knowledge and experience, though, anyone can learn how to machine hardened steel safely and effectively for their specific application needs! If you’re ever unsure about how best to go about working with hardened steel components in your machine shop environment, then don’t hesitate to consult an expert for guidance!

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