Maxamet steel, also known as Micro-Melt Maxamet, is a powder tool steel made by mixing powders of finely ground metals. It is extremely hard, therefore making blades with outstanding edge retention and superior wear resistance. Due to its properties, it is categorized as a luxury- super steel. Maxamet powder steel is made by Carpenter Technology Corporation, a company based in the US. If you are new in the world of steel, this company is not only known to produce quality steel in the US but across the world.

Maxamet Steel Chemical composition

  • Carbon C 2.15%: Increases the edge retention, hardness and tensile strength. It also improves steel resistance to wear, abrasion and corrosion.
  • Chromium Cr 4.75%: Chromium Increases hardness, tensile strength and corrosion resistance of a blade.
  • Vanadium 6.00%: Added for temper resistance and improving toughness.
  • Sulfur S 0.07%: Improves toughness and machinability.
  • Silicon Si 0.25% : Increases strength and heat resistance.
  • Phosphorous P 0.03%: Forms hard carbide in combination with other elements
  • Tungsten W 13.00%: Aids in formation of Tungsten Carbide improving hardness and wear resistance.

Maxamet steel properties

Maxamet Hardness

One of the outstanding features of this steel is its insane hardness. Maxamet has a hardness of 70HRC, according to Rockwell hardness.

The high level of hardness is associated with the mix of Carbon, Vanadium, and Tungsten.

Very few knife steels can come up to the hardness of the Maxamet steel, CPM Rex 45 steel edges closer with a Rockwell hardness of 67 HRc but CPM Rex 121 steel beats it with a hardness of 71 HRc

Maxamet Edge retention

The level of hardness determines edge retention in steel. The higher the hardness, the better the edge retention, and this is true with Maxamet steel.

Once you sharpen Maxamet steel knives, you will use them for long before they become blunt. A Maxamet knife blade will maintain its sharp edge for a very long time.

Therefore, if you are looking for a knife to use in situations that do not give frequent sharpening time, narrow down to varieties of Maxamet steel.

Maxamet Wear resistance

Another steel feature favored by high hardness is wear resistance. For that matter, Maxamet steel knives do not wear and tear easily, even with frequent usage.

As long you use Maxamet steel knives correctly, observing proper care and maintenance, they serve you across generations.

Maxamet Corrosion resistance

One of the downsides of Maxamet blade steel is its poor corrosion resistance because it contains low amounts of chromium in its composition. The chromium contents do not meet the requirements of stainless steel and hence the poor corrosion resistance.

However, you can keep knives made from this steel from rusting by proper care and maintenance. Ensure to wash and wipe the knives dry after use.

Maxamet Toughness

It is rare to get hardness and toughness in the same steel. The more the hardness, the less toughness, and vice versa.

Does this apply to Maxamet steel? YES, maxamet steel offers the moderate level of toughness.

With its toughness level, knives made with Maxamet steel can still be used for challenging applications without breaking or chipping.

Sharpening Maxamet

As a result of high hardness, Maxamet knife steel is challenging to sharpen. Getting an edge is one of the most significant challenges you will experience with this super hard steel.

However, sharpening such hard steel has been made easier with the invention of modern sharpening tools.

It will cost you more to use the sophisticated sharpening methods but save you the time and pain you would have experienced with conventional sharpening methods.


You would have assumed that Maxamet blade is hard to mold because of its hardness, luckily it is not. The machinability of this steel is increased by the use of Sulphur in its composition.

Maxamet steel equivalents

Maxamet steel vs S30V

Maxamet steel beats S30V steel in edge retention, while S30V shines in corrosion resistance. However, both types of steel offer the same level of toughness.

Maxamet steel vs. M390

Maxamet has better hardness and edge retention than M390. On the other hand, M390 steel beats Maxamet in toughness, corrosion resistance and is easier to sharpen.

Is Maxamet good knife steel?

Maxamet steel is a good steel knife because it is very hard, offering excellent edge retention and outstanding wear resistance. You might be concerned about the difficulty in sharpening, but it can be handled by using modern sharpening systems.


Maxamet steel is an amazing alloy that offers unique high hardness and moderate toughness properties. A knife enthusiast will argue that a micro meld maxamet steel is that steel that you will never go wrong with for your knife, which is very true. It is a popular choice in the knife industry though a bit expensive due to the advanced powder metallurgy technology used to produce it. Maxamet blade material has been heavily used by Spyderco.

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