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S90V

 

CPM S90V: The Original Edge Retention Super Steel

 

Long before MagnaCut dominated headlines and before steels such as CPM 15V, Maxamet and REX 121 captivated steel enthusiasts, there was CPM S90V.

For many knife enthusiasts, S90V was the first steel that genuinely felt different, it wasn't simply a small improvement over existing stainless steels. It represented a major leap forward in edge retention and wear resistance, helping to establish the modern era of premium powder metallurgy knife steels.

Today, despite an ever-growing list of exotic alloys competing for attention, CPM S90V remains one of the most respected blade steels in the world. More importantly, it remains one of the most widely used high-performance steels among premium knife manufacturers.

In a market obsessed with novelty, S90V's greatest strength is its track record.

 

The History of CPM S90V

CPM S90V is not a new steel.

Originally introduced by Crucible Industries during the 1990s, S90V emerged during a period of rapid development in powder metallurgy technology. At the time, knife makers were searching for steels that could provide dramatically improved edge retention without sacrificing corrosion resistance.

Crucible's answer was ambitious, using their revolutionary Crucible Particle Metallurgy (CPM) process, they created a stainless steel containing an unprecedented amount of vanadium. The result was a steel capable of generating enormous quantities of hard vanadium carbides, dramatically increasing wear resistance and edge retention compared to conventional stainless steels, in fact, S90V was originally known as CPM 420V before eventually being renamed CPM S90V.

More than two decades later, it remains one of the benchmark steels against which modern high edge-retention stainless steels are judged.

 

Why S90V Became Legendary

The secret to S90V's performance lies in its chemistry.

The steel contains:

This combination produces a remarkably wear-resistant stainless steel with a huge volume of hard vanadium carbides. These carbides are responsible for the steel's exceptional ability to resist abrasive wear during cutting.

For users, that means one thing:

A knife that stays sharp for an extraordinarily long time.

 

The Gold Standard for Edge Retention

While newer steels often dominate online discussions, S90V continues to be one of the highest-performing stainless knife steels available.

Even today, relatively few stainless steels can match its combination of:

This is why S90V remains a favourite among:

When cutting abrasive materials such as cardboard, rope and fibrous media, S90V demonstrates exactly why it became so influential.

 

Remarkably Good Corrosion Resistance

One of S90V's most impressive achievements is that it manages to deliver elite edge retention while remaining fully stainless. Historically, many high wear-resistant steels sacrificed corrosion resistance in pursuit of performance, S90V avoids that compromise.

Its chromium content and carefully balanced metallurgy provide excellent resistance to rust and corrosion while still allowing the steel to benefit from its substantial vanadium carbide structure. For many users, this balance is what makes S90V such an enduring choice.

 

Why S90V Still Matters Today

The knife industry is constantly chasing the next breakthrough, yet despite the arrival of steels such as MagnaCut, S90V continues to appear across premium production knives from many of the industry's most respected manufacturers.

That continued popularity is not an accident, S90V occupies a particularly useful position in the steel landscape.

It offers substantially greater wear resistance than steels such as S30V, S45VN and VG-10, while remaining more corrosion resistant and easier to live with than many non-stainless tool steels. In many respects, it remains one of the defining premium stainless steels of the modern era.

 

Spyderco and CPM S90V

Few companies have done more to showcase S90V than Spyderco. Over the years, Spyderco has released S90V across numerous platforms, often through highly sought-after Sprint Runs and Exclusives.

Spyderco was also instrumental in introducing enthusiasts to some of the most fascinating S90V implementations ever produced, including the famous CPM S90V/CPM 154 composite blades that have become highly collectible among enthusiasts.

 

Sharpening S90V

There is no avoiding the reality that S90V's strengths come with trade-offs.

The same vanadium carbides responsible for its exceptional edge retention also make it more difficult to sharpen than some other stainless steels.

For best results, most enthusiasts recommend:

The good news is that sharpening sessions tend to be infrequent thanks to the steel's extraordinary wear resistance.

 

A Steel That Refuses to Become Obsolete

Many knife steels enjoy a brief period of popularity before being replaced by the next big thing.

CPM S90V has endured the test of time.

More than twenty years after its introduction, it remains one of the most respected and widely used premium knife steels in existence. Its combination of outstanding edge retention, excellent corrosion resistance and proven real-world performance continues to make it a benchmark steel for enthusiasts and manufacturers alike.

While newer steels may attract more attention, S90V's legacy is secure.

It helped define what enthusiasts expect from a premium knife steel and remains one of the finest stainless blade materials ever developed.

 

Frequently Asked Questions

 


What is CPM S90V steel?


CPM S90V is a premium powder metallurgy stainless steel developed by Crucible Industries and renowned for its exceptional edge retention and wear resistance.

 

 

Is S90V stainless?


Yes. S90V contains approximately 14% chromium and offers excellent corrosion resistance alongside outstanding edge retention.

 

 

Why is S90V so popular?


S90V combines exceptional edge retention with strong corrosion resistance, making it one of the most practical high-performance stainless steels available.

 

 

Is S90V better than S30V?


S90V offers significantly greater wear resistance and edge retention than S30V, although S30V is generally considered tougher and easier to sharpen.

 

 

Is S90V better than MagnaCut?


They excel in different areas. S90V offers greater wear resistance and edge retention, while MagnaCut provides superior toughness and corrosion resistance.

 

 

Is S90V difficult to sharpen?


Relatively, yes. Due to its high concentration of vanadium carbides, diamond or CBN abrasives are recommended for efficient sharpening.

 

 

What Spyderco knives are available in S90V?


Spyderco has produced S90V versions of the Para Military 2, Para 3, Manix 2, Native 5, Military and numerous Sprint Run and Exclusive models.

 

 

Is S90V still relevant today?


Absolutely. Despite the arrival of newer steels, S90V remains one of the most respected and widely used high-performance stainless steels in the knife industry.

 

 

Is S90V good for everyday carry?


Yes. Its combination of corrosion resistance and exceptional edge retention makes it an outstanding choice for EDC use.

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