Cobalt alloys are a group of cobalt-chromium ‘super-alloys’ consisting of complex carbides in an alloy matrix. They are mostly used for high wear resistance and superior chemical and corrosion performance in hostile environments. Let’s take a look at everything you need to know about cobalt alloys.

Chemical Properties

There are several types and variations of cobalt alloys. All types contain varying amounts of the following elements in different quantities:

  • Titanium
  • Silicon
  • Sulfur
  • Phosphorus
  • Molybdenum
  • Manganese
  • Chromium
  • Carbon
  • Boron
  • Aluminum
  • Iron
  • Nickel
  • Cobalt

Most of these alloys contain four to six of those elements. Of all those elements, carbon and chromium are the most important. Those two, consequently, play the biggest roles in how the alloy performs.

Manufacturing Process

Cobalt alloys are produced by a range of different processes or methods. These methods include wrought or hot forging, hard-faced deposit, powder metal, and finally, casting. It’s more difficult to machine and grind than steel. As a result, high-performance processing equipment and specialized machining tools are required. Typically, it is machined by grinding instead of cutting.


Some of the major applications include the following:

  • Saw teeth, hardfacing, and acid-resistant machine parts.
  • Poppet valves, valve seats and exhaust valves of the internal combustion engine.
  • M2HB machine gun and machine gun barrels.
  • Medical applications including manufacturing of artificial hip joints, other bone replacements and cast structure of dental prosthesis.
  • Turning tools for lathes.

Are You Looking for Cobalt Alloys?

At Ferralloy, we offer cobalt alloys for your next project. As a result, we can get you everything you need. Contact us today to learn more or to place an order.

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